Lowrance electronic Fish Finder LCX 20C User Manual
Pub. 988-0151-261  
www.lowrance.com  
LCX-20C  
Fish-finding Sonar & Mapping GPS  
Operation Instructions  
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Table of Contents  
Section 1: Read Me First!........................................................1  
Capabilities and Specifications: LCX-20C .................................... 3  
How Your Sonar Works................................................................ 5  
How Your GPS Works .................................................................. 6  
Introduction to GPS and WAAS................................................... 7  
How to use this manual: typographical conventions ................ 10  
Section 2: Installation & Accessories..................................11  
Preparations................................................................................ 11  
Transducer Installation.............................................................. 11  
Recommended Tools and supplies.......................................... 12  
Shoot-thru-hull vs. Transom Mounting................................. 14  
Transom Transducer Assembly And Mounting..................... 15  
TROLLING MOTOR BRACKET INSTALLATION.............. 21  
TRANSDUCER ORIENTATION AND FISH ARCHES ....... 22  
SHOOT-THRU-HULL PREPARATION................................ 22  
Speed/Temperature Sensors.................................................27  
GPS Antenna/Receiver Module.................................................. 28  
Power Connections...................................................................... 31  
Powering a NMEA 2000 Buss .................................................... 32  
Powering Your Unit................................................................ 32  
NMEA 2000 Cable Connections................................................. 34  
Connecting to a NMEA 2000 Network................................... 34  
NMEA 0183 Wiring (Data cable) ........................................... 35  
Mounting the Unit: Bracket or In-Dash .................................... 36  
MMC or SDC Memory Card Installation................................... 40  
Other Accessories........................................................................ 41  
Section 3: Basic Sonar Operation.......................................43  
Keyboard ..................................................................................... 43  
Power/lights on and off............................................................... 44  
Main Menu.................................................................................. 45  
Pages ........................................................................................... 46  
Satellite Status Page .............................................................. 46  
Navigation Page...................................................................... 47  
Map Page................................................................................. 47  
Sonar Page .............................................................................. 48  
LCX-20C Sonar Quick Reference............................................... 51  
Sonar Operations........................................................................ 52  
Fish Symbols vs. Full Sonar Chart........................................ 54  
Other Free Training Aids ....................................................... 54  
Section 4: Sonar Options & Other Features.....................57  
ASP(Advanced Signal Processing)..................................... 57  
Alarms ......................................................................................... 58  
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Depth Alarms.......................................................................... 58  
Zone Alarm.............................................................................. 59  
Fish Alarm............................................................................... 60  
Calibrate Speed........................................................................... 60  
Chart Speed................................................................................. 61  
ColorLine.................................................................................. 62  
Depth Cursor............................................................................... 63  
Depth Range - Automatic........................................................... 64  
Depth Range - Manual ............................................................... 65  
Depth Range - Upper and Lower Limits ................................... 65  
FasTrack.................................................................................. 66  
Fish I.D.(Fish Symbols & Depths)......................................... 67  
FishTrack................................................................................. 69  
Frequency (Change Transducer Frequency .............................. 69  
HyperScroll.............................................................................. 70  
Log Sonar Chart Data ................................................................ 70  
Noise Rejection............................................................................ 71  
Overlay Data............................................................................... 71  
Ping Speed & HyperScroll....................................................... 74  
Reset Options.............................................................................. 75  
Reset Water Distance ................................................................. 76  
Set Keel Offset ............................................................................ 76  
Sensitivity & Auto Sensitivity.................................................... 77  
Automatic Sensitivity ............................................................. 78  
Sonar Chart Mode....................................................................... 79  
Sonar Page & Sonar Chart Display Options ............................. 79  
Full Sonar Chart..................................................................... 80  
Split Zoom Sonar Chart.......................................................... 81  
Split Frequency Sonar Chart ................................................. 81  
Digital Data/Chart.................................................................. 82  
Customize Page Displays ........................................................... 82  
FlashGraf............................................................................. 83  
Map With Sonar Split Screen................................................. 84  
Sonar Simulator.......................................................................... 85  
Stop Chart................................................................................... 86  
Surface Clarity............................................................................ 87  
Transparency .............................................................................. 88  
Upper and Lower Limits ............................................................ 88  
Zoom & Zoom Bar ....................................................................... 89  
Zoom Pan..................................................................................... 89  
Notes...........................................................................................90  
Section 5: Sonar Troubleshooting .......................................91  
Section 6: Basic GPS Operations .........................................95  
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Keyboard ..................................................................................... 95  
Power/lights on and off............................................................... 96  
Main Menu.................................................................................. 96  
Pages ........................................................................................... 98  
Sonar Page .............................................................................. 98  
Satellite Status Page .............................................................. 98  
Navigation Page.................................................................... 100  
Map Page............................................................................... 101  
GPS Quick Reference................................................................ 107  
Find Your Current Position...................................................... 108  
Moving Around the Map: Zoom & Cursor Arrow Keys........... 108  
Selecting Any Map Item With the Cursor............................... 109  
Searching................................................................................... 109  
Set a Waypoint.......................................................................... 111  
Navigate To a Waypoint........................................................... 113  
Set Man Overboard (MOB) Waypoint...................................... 114  
Navigate Back to MOB Waypoint............................................ 114  
Navigate to Cursor Position on Map........................................ 115  
Navigate to a Point of Interest................................................. 117  
Creating and Saving a Trail..................................................... 117  
Displaying a Saved Trail.......................................................... 119  
Navigating Trails...................................................................... 119  
Visual Trailing ...................................................................... 120  
Navigate a Trail (forward).................................................... 120  
Transfer Custom Maps and GPS Data Files........................... 122  
Custom Maps: ....................................................................... 122  
GPS Data files:...................................................................... 123  
Cancel Navigation..................................................................... 124  
Section 7: Advanced GPS Operations...............................125  
Find Distance From Current Position ..................................... 125  
Find Distance From Point to Point.......................................... 125  
Icons........................................................................................... 125  
Create Icon on Map............................................................... 126  
Create Icon at Current Position........................................... 126  
Delete an Icon ....................................................................... 126  
Navigate to an Icon............................................................... 127  
Routes........................................................................................ 127  
Create and Save a Route ...................................................... 128  
PC-created Routes............................................................. 128  
Routes Created in the Unit............................................... 128  
Delete a Route....................................................................... 130  
Edit a Route .......................................................................... 130  
Navigate a Route................................................................... 131  
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Navigate a Route in Reverse ................................................ 132  
Trails ......................................................................................... 132  
Delete a Trail ........................................................................ 132  
Edit a Trail Name ................................................................. 132  
Edit a Trail Color .................................................................. 133  
Edit a Trail Pattern .............................................................. 133  
Utilities...................................................................................... 134  
Alarm Clock........................................................................... 134  
Sun/Moon Rise & Set Calculator.......................................... 134  
Trip Calculator...................................................................... 134  
Trip Down Timer................................................................... 134  
Trip Up Timer ....................................................................... 134  
Waypoints.................................................................................. 134  
Delete a Waypoint................................................................. 134  
Edit a Waypoint .................................................................... 134  
Waypoint Name................................................................. 134  
Waypoint Symbol .............................................................. 135  
Waypoint Position............................................................. 135  
Selecting a Waypoint ............................................................ 135  
Set a Waypoint by Average Position.................................... 135  
Set a Waypoint by Projecting a Position.............................. 135  
Section 8: System & GPS Setup Options..........................137  
Alarms ....................................................................................... 137  
Auto Satellite Search................................................................ 138  
Check MMC Files and Storage Space...................................... 138  
Communications Port Configuration....................................... 139  
Configure NMEA ...................................................................... 139  
Coordinate System Selection.................................................... 140  
Map Fix ..................................................................................... 141  
Customize Page Displays ......................................................... 143  
GPS Simulator .......................................................................... 144  
Hide GPS Features................................................................... 145  
Initialize GPS............................................................................ 145  
Map Auto Zoom......................................................................... 146  
Map Data................................................................................... 146  
Pop-up Map Info.................................................................... 146  
Map Boundaries.................................................................... 147  
Fill Water With White.......................................................... 147  
Map Overlays (Range Rings; Lat/Long Grid) ...................... 147  
Map Datum Selection ............................................................... 147  
Map Detail Category Selection................................................. 148  
Map Orientation ....................................................................... 149  
NavionicsCharts..................................................................... 150  
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Port Information ................................................................... 151  
Tidal Current Information ................................................... 152  
Tide Information................................................................... 154  
Pop-up Help............................................................................... 156  
Reset Options............................................................................ 156  
Screen Contrast and Brightness.............................................. 157  
Once in the Screen menu:................................................. 157  
Set Language ............................................................................ 158  
Set Local Time .......................................................................... 158  
Once in the Time Settings menu:..................................... 158  
Show WAAS Alarm................................................................... 159  
Software Version Information.................................................. 160  
Sounds and Alarm Sound Styles.............................................. 160  
Once in the Sounds menu................................................. 160  
Track Smoothing....................................................................... 161  
Trail Options............................................................................. 161  
General Trail Options....................................................... 161  
Delete All Trails.................................................................... 162  
Update Trail Option.............................................................. 162  
Update Trail Criteria (Auto, Time, Distance) ................. 162  
Trail Update Rate (Time, Distance)................................. 162  
Specific Trail Options........................................................ 163  
Delete Trail ........................................................................... 163  
New Trail............................................................................... 163  
Trail Visible/Invisible and Other Trail Options .................. 163  
Units of Measure....................................................................... 164  
Section 9: Searching ............................................................165  
Find Addresses.......................................................................... 165  
Find Any Item Selected by Map Cursor .................................. 168  
Find Interstate Highway Exits ................................................ 168  
Find Map Places or Points of Interest (POI) ........................... 171  
Find Streets or Intersections.................................................... 172  
Find a Street ......................................................................... 172  
Find an Intersection ............................................................. 174  
Find Waypoints......................................................................... 176  
Section 10: Supplemental Material ...................................179  
Notes.............................................. Error! Bookmark not defined.  
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WARNING!  
A CAREFUL NAVIGATOR NEVER RELIES ON ONLY ONE METHOD  
TO OBTAIN POSITION INFORMATION.  
CAUTION  
When showing navigation data to a position (waypoint), a GPS unit will show  
the shortest, most direct path to the waypoint. It provides navigation data to the  
waypoint regardless of obstructions. Therefore, the prudent navigator will not  
only take advantage of all available navigation tools when traveling to a  
waypoint, but will also visually check to make sure a clear, safe path to the  
waypoint is always available.  
WARNING!  
When a GPS unit is used in a vehicle, the vehicle operator is solely  
responsible for operating the vehicle in a safe manner. Vehicle  
operators must maintain full surveillance of all pertinent driving,  
boating or flying conditions at all times. An accident or collision  
resulting in damage to property, personal injury or death could occur if  
the operator of a GPS-equipped vehicle fails to pay full attention to  
travel conditions and vehicle operation while the vehicle is in motion.  
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Section 1:  
Read Me First!  
How this manual can get you out on the road, fast!  
Welcome to the exciting world of digital sonar and GPS! We know  
you're anxious to begin navigating and finding fish, but we have a favor  
to ask. Before you grab the unit and begin installing it, please give us a  
moment or two to explain how our manual can help you get the best  
performance from your combination fish finder and GPS receiver.  
First, we want to thank you for buying a Lowrance sonar/GPS unit.  
Whether you're a first time user or a professional fisherman, you'll  
discover that your unit is easy to use, yet capable of handling  
demanding navigation and sonar tasks. When you team your unit with  
our custom mapping software MapCreate6, you have an incredible  
combination. With a full VGA color display, recording capability and  
remarkable resolution, you won't find another GPS/sonar unit with this  
much power and this many features for this price!  
Our goal for this book is to get you on the water. Like you, we'd rather  
spend more time boating or fishing and less time reading the manual!  
So, we designed our book so you don't have to read the whole thing from  
front to back to find the information you want. At the start (or end) of  
each segment, we'll tell you what content is coming up next. If it's a  
concept you're already familiar with, we'll show you how and where to  
skip ahead for the next important topic. We've also made it easy to look  
up any tips you may need from time to time. Here's how:  
The manual is organized into 10 sections. This first section is an  
introduction to the LCX-20C sonar and GPS. It tells you the basics you  
need to know so you’ll easily be able to make the unit, not only tell you  
where you are, but also where to find fish.  
Section 2 will help you install your unit, the transducer and the GPS  
antenna module. We'll also show you how to install the MultiMedia  
Card (MMC) and give you some information on available accessories.  
Section 3 covers Basic Sonar Operation. It will show you how easy it is  
to run your sonar, right out of the box. This section features a one-page  
Sonar Quick Reference. (If you've already jumped ahead and  
figured out how to install the unit yourself, and you just can't  
wait any longer, turn to the Quick Reference on page 51 and  
head for the water with your unit!)  
After you've gained some experience with your sonar, you'll want to  
check out Section 4, which discusses advanced Sonar Options and  
Other Features.  
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When you come to a sonar menu command on the unit's screen, you can  
look it up in the manual by skimming over the table of contents, flipping  
through Section 3, or scanning through the sonar options in Section 4.  
If you're having difficulty with your sonar, you can find an answer to  
the most common problems in Section 5, Sonar Troubleshooting.  
The manual switches from sonar to navigation in Section 6, which  
introduces you to Basic GPS Operations. This section features a one-  
page GPS Quick Reference on page 107.  
Section 6 contains short, easy-to-scan GPS lessons that follow one  
another in chronological order. They're all you'll need to know to find  
your way on the water quickly.  
After you've learned the basics (or if you already have some GPS  
experience), you may want to try out some of the unit's many advanced  
navigation features. That brings us to Section 7, Advanced GPS  
Operations. This section contains the rest of the unit's GPS command  
functions, organized in alphabetical order.  
When you come to a GPS menu command on the screen, you can look it up  
in the manual by skimming over the table of contents, flipping through  
Section 6, or scanning through the command portion of Section 7.  
This unit is ready to use right out of the box, but you can fine tune and  
customize its operation with dozens of options. Since sonar is the unit's  
key feature, we put the main sonar options in Section 4. Some options,  
such as screen brightness settings, affect both sonar and GPS  
operations. We describe how to use those common options along with  
GPS options in Section 8, System Setup and GPS Setup Options.  
Section 8 is organized in alphabetical order.  
In Section 9, we go into more detail on one of the unit's most remarkable  
GPS capabilities — Searching. We'll introduce a search example in the  
Basic GPS Operation section, but there are so many map items you can  
search for, we had to give this function its own section in the manual! For  
example, did you know your unit can look up business phone numbers,  
like a virtual Yellow Pages? We’ll show you how in Section 9.  
Finally, in Section 10, we offer Supplemental Material, including a list  
of the GPS datums, warranties and customer service information.  
Now, if you're into the fine details, glance over the next segment on  
specifications to see how much sonar and GPS power your unit contains.  
It's important to us (and our power users), but, if you don't care how  
many watts of power the unit has, or how many waypoints it can store,  
skip ahead to important information on how sonar works, on page 5.  
(Background on GPS begins on page 6.)  
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Capabilities and Specifications: LCX-20C  
General  
Display:............................ High-brightness LCD; programmable to  
viewing preference.  
LCX-20C: 6.0" (15.2 cm) diagonal.  
Resolution:...................... LCX-20C: 320 pixel x 240 pixel resolution;  
76,800 total pixels; 256-color, full VGA.  
Backlighting:.................. Fluorescent cold cathode backlit screen with  
multiple lighting levels; backlit keypad.  
Input power:................... 10 to 15 volts DC.  
Current drain: ............... Sonar only: 500 ma lights off; 600 ma lights  
on. With GPS and lights on: 700 ma.  
Case size:......................... 7.3" H x 9.6" W x 3.7" D (18.5 x 24.4 x 9.4  
cm); sealed and waterproof; suitable for  
saltwater use.  
MMC slots: ...................... Two in waterproof compartment (SD card  
compatible).  
Back-up memory:.......... Built-in memory stores sonar records and  
GPS data for decades. User settings are  
stored when unit is turned off.  
Languages:...................... 10 languages selectable by user.  
Sonar  
Frequency:...................... Depending on transducer, either 50/200 kHz  
dual-frequency or 200 kHz single-frequency.  
Transducers:.................... Skimmertransducer with built-in  
temperature sensor available. Use either a  
dual-frequency transducer with 35°/12° cone  
angles or a single-frequency transducer with a  
20° cone angle. Both transducers operate at  
speeds up to 70 mph (61 kts).  
Transmitter:................... Dual-frequency: 8,000 watts peak-to-  
peak/1 kW RMS.  
Single-frequency: 3,000 watts peak-to-  
peak/375 watts RMS.  
Sonar sounding  
Depth capability:........... Dual-frequency: 3,000 feet (915 meters).  
Single-frequency: 1,000 feet (305 meters)  
Depth display:............... Continuous display.  
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Graph recording: .......... Up to 1 GB on one MMC (or SD) card  
Audible alarms: ............. Deep/shallow/fish/zone.  
Automatic ranging:....... Yes, with instant screen updates.  
Auto bottom track:........ Yes  
Zoom bottom track: ...... Yes.  
Split-screen zoom:......... Yes.  
Surface water temp:..... Yes, built into transducer.  
Speed/distance log:....... Yes, with optional speed sensor.  
GPS  
Receiver/antenna:......... External; LGC-2000.  
Recording:........................MMC & SD memory cards for recording GPS  
trip details and displaying charts or custom  
maps.  
Background map:.......... Built-in custom, detailed Lowrance map.  
Contains: enhanced detail of continental U.S.  
and Hawaii.  
Custom mapping:.......... MapCreate6 software optional; optional  
plug and play LEI FreedomMapsoffer the  
same high-detail without the computer work  
of MapCreate. Other plug and play mapping  
options include IMSFishing Hot Spots,  
LEI NauticPathscharts and Navionics  
charts.  
Mapping memory:......... Up to 1 GB on one MMC (or SD) card.  
Position updates: .......... Every second.  
Position points: ............. 1,000 waypoints; 1,000 event marker icons.  
Audible alarms: ............. Arrival/off-course/anchor.  
Symbols for  
waypoints or icons:....... 42.  
Routes:............................. 100; up to 100 waypoints per route.  
Plot Trails:...................... 10 savable; up to 9,999 points per trail.  
Zoom range:.................... 37 ranges; 0.05 to 4,000 miles.  
NOTE:  
The above memory capacities refer only to the unit's on-board  
memory. The amount of GPS or sonar data you can record and save  
for recall later is only limited by the number of MMC cards you have.  
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NOTICE!  
The storage and operation temperature range for your unit is from -  
4 degrees to +167 degrees Fahrenheit (-20 degrees to +75 degrees  
Celsius). Extended storage or operation in temperatures higher or  
lower than specified will damage the liquid crystal display in your  
unit. This type of damage is not covered by the warranty. For more  
information, contact the factory's Customer Service Department.  
Phone numbers are listed on the last page.  
How Your Sonar Works  
Sonar has been around since the 1940s, so if you already know how it  
works, skip down to read about the relatively new technology of GPS.  
But, if you've never owned a sonar fish finder, this segment will tell you  
the underwater basics.  
Sonar is an abbreviation for SOund NAvigation and Ranging, a  
technology developed during World War II for tracking enemy  
submarines. (Lowrance developed the world's first transistorized  
sportfishing sonar in 1957.) A sonar consists of a transmitter,  
transducer, receiver and display. Here’s a simple explanation of how it  
finds the bottom and the fish.  
The transmitter emits an electrical impulse, which the transducer  
converts into a sound wave and sends into the water. (The sound  
frequency can't be heard by humans or fish.) The sound wave strikes an  
object (fish, structure, bottom) and bounces back to the transducer,  
which converts the sound back into an electrical signal.  
The receiver amplifies this return signal, or echo, and sends it to the  
display, where an image of the object appears on the scrolling sonar  
chart. The sonar's microprocessor calculates the time lapse between the  
transmitted signal and echo return to determine the distance to the  
object. The whole process repeats itself several times each second.  
Your sonar unit can record a log of the sonar signals that scroll across  
the screen and save them to the MMC memory card. (These recordings  
are also called sonar charts or sonar graphs.) You can replay this sonar  
log in the unit using the Sonar Simulator function, or play it back on a  
personal computer using our free Sonar Viewer. The viewer is available  
for download from the Lowrance web site, www.lowrance.com.  
You can save several different sonar log files, erase 'em and record new  
ones, over and over again. The size of your sonar recordings are only  
limited by the free space available on your MMC.  
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How Your GPS Works  
You'll navigate faster and easier if you understand how this unit scans  
the sky to tell you where you are on the earth — and, where you're  
going. (But if you already have a working understanding of GPS  
receivers and the GPS navigation system, skip on ahead to Section 2,  
Installation & Accessories on page 11. If you're new to GPS, read on, and  
you can later impress your friends with your new-found knowledge.)  
First, think of your unit as a small but powerful computer. (But don't  
worry — we made the series easy to use, so you don't need to be a  
computer expert to find your way!) The unit includes a keypad and a  
screen with menus so you can tell it what to do. The screen also lets the  
unit show your location on a moving map, as well as point the way to  
your destination.  
This gimbal-mounted unit uses an external antenna/receiver module,  
which makes the whole system work something like your car radio. But  
instead of your favorite dance tunes, this receiver tunes in to a couple of  
dozen GPS satellites circling the earth. (It will also listen in to the  
WAAS satellites in orbit, but more about that in the upcoming segment  
introducing you to GPS and WAAS.)  
Your unit listens to signals from as many satellites as it can "see" above  
the horizon, eliminates the weakest signals, then computes its location  
in relation to those satellites. Once it figures its latitude and longitude,  
the unit plots that position on the moving map shown on the screen.  
The whole process takes place several times a second!  
The performance doesn't stop there. Stored in the permanent memory  
of every unit is a basic background map of the entire world. We lock it  
in here at the factory — you can't change or erase this map.  
The background map is suitable for many navigation chores, but for  
maximum accuracy and much more detail, you need our optional map-  
making software, MapCreate6. Some unit features — such as  
searching for businesses and addresses — won't work without a custom  
MapCreate map. There is so much detail in our background map (and  
even more in MapCreate) that we'll describe its contents and  
differences in Section 6, Basic GPS Operations, on page 95.  
Another portion of the unit's onboard memory is devoted to recording  
GPS navigation information, which includes waypoints, event marker  
icons, trails and routes. This lets you look back the way you came. Think  
of this data storage like the hard drive memory in a computer or a tape  
in a cassette tape recorder. You can save several different GPS data files,  
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erase 'em and record new ones, over and over again. Like any computer  
file, these GPS Data Files (file format *.usr) can be shared between  
other Lowrance GPS or sonar/GPS units and even personal computers.  
Your unit has one more thing in common with a personal computer.  
Just as computers have a floppy disk drive for storing and exchanging  
files, this unit has a slot for an MMC (MultiMedia Card) or SDC  
(Secure Digital card) flash memory card. These solid-state memory  
devices are about the size of a postage stamp, but can hold data ranging  
from 8 MB to 1 GB in size. (Compare that to a floppy disk's 1.44 MB  
capacity!) The unit uses all that MMC space for two key GPS purposes.  
(The MMC is also used to record sonar logs. See page 5.)  
First, you can backup your onboard GPS Data Files by copying them to  
the MMC. Since the MMC is removable (like a floppy disk or a cassette  
tape), you can store these GPS Data Files on a personal computer  
equipped with an MMC card reader. (Or store them on a pocketful of  
MMCs, if you don't have a computer.) Our MapCreate mapping software  
can save, edit or create its own GPS Data Files, which can be copied to  
the MMC and then loaded from the MMC into the unit's memory.  
(NOTE: No matter where they come from, GPS Data Files must be  
loaded from the MMC into memory before the unit can use them.)  
The other key GPS use for MMCs is storage of special high-detail,  
custom maps, which you can produce on your computer with our  
MapCreate software. These MapCreate custom maps contain much  
greater detail than the basic background map. These Custom Map  
Files (file format *.lcm) can also be shared between other Lowrance  
GPS or sonar/GPS units and personal computers. (For example, the  
exact same MMC, custom map files and GPS data files can be used  
interchangeably between your gimbal-mounted LCX-20C and the hand-  
held iFINDERGPS receiver.)  
The unit automatically reads Custom Map Files directly from the MMC  
or SDC. To use a custom map, all you need to do is slide an MMC  
containing a map into the unit.  
Introduction to GPS and WAAS  
Well, now you know the basics of how the unit does its work. You might  
be ready to jump ahead to Section 2, Installation & Accessories, on page  
11, so you can mount your unit and plug in the power. Or you might  
want to see how our text formatting makes the manual tutorials easy to  
skim. If that's the case, move on to "How to Use This Manual" on page  
10. But, if you want to understand the current state of satellite  
navigation, look over this segment describing how GPS and its new  
companion WAAS work together to get you where you're going.  
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The Global Positioning System (GPS) was launched July 17, 1995 by  
the United States Department of Defense. It was designed as a 24-  
hour-a-day, 365-days-a-year, all weather global navigation system for  
the armed forces of the U.S. and its allies. Civilian use was also  
available, but it was less accurate because the military scrambled the  
signal somewhat, using a process called Selective Availability (SA.)  
GPS proved so useful for civilian navigation that the federal  
government discontinued SA on May 2, 2000, after the military  
developed other methods to deny GPS service to enemy forces. Reliable  
accuracy for civilian users jumped from 100 meters (330 feet) under SA  
to the present level of 10 to 20 meters (about 30 to 60 feet.)  
Twenty-four satellites orbit 10,900 nautical miles above the Earth,  
passing overhead twice daily. A series of ground stations (with precisely  
surveyed locations) controls the satellites and monitors their exact  
locations in the sky. Each satellite broadcasts a low-power signal that  
identifies the satellite and its position above the earth. Three of these  
satellites are spares, unused until needed. The rest virtually guarantee  
at least four satellites are in view nearly anywhere on Earth at all times.  
A minimum of three satellites are required to determine a 2D fix.  
The system requires signal reception from three satellites in order to  
determine a position. This is called a 2D fix. It takes four satellites to  
determine both position and elevation (your height above sea level —  
also called altitude). This is called a 3D fix.  
Remember, the unit must have a clear view of the satellites in order to  
receive their signals. Unlike radio or television signals, GPS works at  
very high frequencies. These signals can be easily blocked by trees,  
buildings, an automobile roof, even your body.  
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Like most GPS receivers, this unit doesn’t have a compass or any other  
navigation aid built inside. It relies solely on the signals from the  
satellites to calculate a position. Speed, direction of travel, and distance  
are all calculated from position information. Therefore, in order for the  
unit to determine direction of travel, you must be moving and the  
faster, the better. This is not to say that it won’t work at walking or  
trolling speeds — it will. There will simply be more "wandering" of the  
data shown on the display.  
GPS is plenty accurate for route navigation, but the U.S. Federal  
Aviation Administration has special needs for aircraft traffic control  
that go beyond basic GPS. The FAA has a plan under way to boost GPS  
performance even further with its Wide Area Augmentation System, or  
WAAS. This GPS add-on will include a time control element that will  
help airliners fly closer together while avoiding collisions. In addition to  
carefully spacing airplanes along travel corridors, WAAS will  
eventually make instrument landings and takeoffs more accurate as it  
replaces existing aviation navigation systems.  
Non-aviators can use WAAS signals to make their GPS navigation even  
more accurate. Your unit receives both GPS and WAAS signals. WAAS,  
however, has some limits you should know about.  
First, the U.S. government has not completed construction of the WAAS  
system, so it is not yet fully operational. The ground stations are in place,  
but only a few of the needed WAAS satellites have been launched.  
WAAS can boost the accuracy of land GPS navigation, but the system is  
designed for aircraft. The satellites are in a fixed orbit around the  
Equator, so they appear very low in the sky to someone on the ground  
in North America. Aircraft and vessels on open water can get  
consistently good WAAS reception, but terrain, foliage or even large  
man-made structures frequently block the WAAS signal from ground  
receivers.  
You'll find that using your GPS receiver is both easy and amazingly  
accurate. It’s easily the most accurate method of electronic navigation  
available to the general public today. But remember this receiver is  
only a tool. Always have another method of navigation available, such  
as a map or chart and a compass.  
Also remember this unit will always show navigation information in  
the shortest line from your present position to a waypoint, regardless of  
terrain! It only calculates position, it can’t know what’s between you  
and your destination. It’s up to you to safely navigate around obstacles,  
no matter how you’re using this product.  
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How to use this manual: typographical conventions  
Many instructions are listed as numbered steps. The keypad and arrow  
"keystrokes" appear as boldface type, so you can easily skim the  
instructions and pick out what menu command to use.  
Arrow Keys  
The arrow keys control the movement of dotted cross-hair lines on your  
mapping screen called the cursor. The arrow keys also control a  
horizontal line depth cursor on the sonar screen. The arrow keys also  
help you move around the menus so you can execute different  
commands. They are represented by symbols like these, which denote  
the down arrow, up arrow, left arrow and right arrow: ↓ ↑ ← →.  
Keyboard  
The other keys perform a variety of functions. When the text refers to a  
key to press, the key is shown in bold. For example, the "Enter/Icons"  
key is shown as ENT and the "Menu" key is shown as MENU.  
Menu Commands  
A menu command or a menu option will appear in small capital letters, in  
a bold sans serif type like this: ROUTE PLANNING. These indicate that you are  
to select this command or option from a menu or take an action of some  
kind with the menu item. Text that you may need to enter or file names  
you need to select are show in italic type, such as trail name.  
Instructions = Menu Sequences  
Most functions you perform with this unit are described as a sequence  
of key strokes and selecting menu commands. We've written them in a  
condensed manner for quick and easy reading.  
For example, instructions for navigating a trail would look like this:  
1. From the Map Page, press MENU|MENU|↓ to MY TRAILS|ENT.  
2. Press ↓ to Trail 1|ENT|→|↓ to NAVIGATE|ENT.  
3. You are asked to wait while it converts the trail into a route.  
4. The wait message disappears and the unit begins showing  
navigation information along the trail. Now, begin moving and  
follow your unit's directions.  
In clearer terms, step 1 (above) means: "Start on the Map Page. Press the  
Menu key twice. Next, repeatedly press (or press and hold) the down  
arrow key to scroll down the menu and select (highlight) the My Trails  
menu command. Finally, press the Enter key."  
Step 2: "Press the down arrow key repeatedly to scroll to the trail  
named Trail 1, and press Enter. Next, press the right arrow key and  
then the down arrow key to highlight the Navigate command, then  
press Enter."  
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Section 2:  
Installation & Accessories  
Preparations  
You can install the sonar and GPS systems in some other order if you  
prefer, but we recommend this installation sequence:  
CAUTION:  
You should read over this entire installation section before  
drilling any holes in your vehicle or vessel!  
1. Determine the approximate location for the sonar/GPS unit, so you  
can plan how and where to route the cables for the antenna, transducer  
and power. This will help you make sure you have enough cable length  
for the desired configuration.  
2. Determine the approximate location for the transducer and its cable  
route.  
3. Determine the approximate location for the GPS antenna module  
and its cable route.  
4. Determine the location of your battery or other power connection,  
along with the power cable route.  
5. Install the transducer and route the transducer cable to the  
sonar/GPS unit.  
6. Install the GPS antenna and route the antenna cable to the  
sonar/GPS unit.  
7. Install the power cable and route it to the sonar/GPS unit.  
8. Mount the sonar/GPS unit.  
Transducer Installation  
These instructions will help you install your Skimmertransducer on a  
transom, on a trolling motor or inside a hull. These instructions cover  
both single- and dual-frequency Skimmer transducers. Please read all  
instructions before proceeding with any installation.  
The smaller single-frequency Skimmers typically use a one-piece,  
stainless steel mounting bracket. The larger dual-frequency Skimmers  
typically use a two-piece, plastic mounting bracket. The trolling motor  
mount uses a one-piece plastic bracket with an adjustable strap.  
These are all "kick-up" mounting brackets. They help prevent damage if  
the transducer strikes an object while the boat is moving. If the  
transducer does "kick-up," the bracket can easily be pushed back into  
place without tools.  
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Read these instructions carefully before attempting the installation.  
Determine which of the mounting positions is right for your boat. Use  
extreme care if mounting the transducer inside the hull, because once  
the epoxy is applied and it is set into position, the transducer cannot be  
removed. Remember, the transducer installation is the most  
critical part of a sonar installation.  
Recommended Tools and supplies  
If you prefer the option of routing the cable through the transom, you  
will need a 1" drill bit. A transom mount requires use of a high quality,  
marine grade above- or below-waterline caulking compound.  
NOTE  
The following installation types also call for these recommended  
tools and required supplies (supplies are not included):  
Single-frequency transom installations  
Tools include: two adjustable wrenches, drill, #29 (0.136") drill bit, flat-  
head screwdriver. Supplies: high quality, marine grade above- or below-  
waterline sealant/adhesive compound.  
Dual-frequency transom installations  
Tools: two adjustable wrenches, drill, #20 (0.161") drill bit, flat-head  
screwdriver. Supplies: four, 1" long, #12 stainless steel slotted wood  
screws, high quality, marine grade above- or below-waterline  
sealant/adhesive compound.  
Single-frequency trolling motor installations  
Tools: two adjustable wrenches, flat-head screwdriver. Supplies: plastic  
cable ties.  
Shoot-through hull installations  
Tools: these will vary depending on your hull's composition. Consult your  
boat dealer or manufacturer. Other tools are a wooden craft stick or  
similar tool for stirring and applying epoxy, and a paper plate or piece  
of cardboard to mix the epoxy on. Supplies: rubbing alcohol, 100 grit  
sandpaper, specially formulated epoxy adhesive available from LEI (see  
ordering information on the inside back cover). A sandwich hull also  
requires polyester resin.  
Selecting a Transducer Location  
1. The location must be in the water at all times, at all operating speeds.  
2. The transducer must be placed in a location that has a smooth flow of  
water at all times. If the transducer is not placed in a smooth flow of  
water, interference caused by bubbles and turbulence will show on  
the sonar's display in the form of random lines or dots whenever the  
boat is moving.  
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NOTE:  
Some aluminum boats with strakes or ribs on the outside of the  
hull create large amounts of turbulence at high speed. These boats  
typically have large outboard motors capable of propelling the boat  
at speeds faster than 35 mph. Typically, a good transom location on  
aluminum boats is between the ribs closest to the engine.  
3. The transducer should be installed with its face pointing straight  
down, if possible. For shoot-thru applications: Many popular fishing  
boat hulls have a flat keel pad that offers a good mounting surface. On  
vee hulls, try to place the transducer where the deadrise is 10° or less.  
Deadrise less than 10°  
Strakes  
Pad  
Left, vee pad hull; right, vee hull. A pod style transducer is shown here,  
but the principle is the same for Skimmers inside a hull.  
4. If the transducer is mounted on the transom, make sure it doesn't  
interfere with the trailer or hauling of the boat. Also, don't mount it  
closer than approximately one foot from the engine's lower unit. This  
will prevent cavitation (bubble) interference with propeller operation.  
5. If possible, route the transducer cable away from other wiring on the  
boat. Electrical noise from engine wiring, bilge pumps and aerators  
can be displayed on the sonar's screen. Use caution when routing the  
transducer cable around these wires.  
CAUTION: Clamp the  
transducer cable to transom  
near the transducer. This will  
help prevent the transducer  
from entering the boat if it is  
knocked off at high speed.  
Good location  
Poor location  
Good  
location  
Good location  
Poor angle  
Good and poor transducer locations.  
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How low should you go?  
For most situations, you should install your Skimmer transducer so  
that its centerline is level with the bottom of the boat hull. This will  
usually give you the best combination of smooth water flow and  
protection from bangs and bumps.  
Transom  
Transducer  
centerline  
Hull bottom  
Align transducer centerline with hull bottom.  
However, there are times when you may need to adjust the transducer  
slightly higher or lower. (The slots in the mounting brackets allow you  
to loosen the screws and slide the transducer up or down.) If you  
frequently lose bottom signal lock while running at high speed, the  
transducer may be coming out of the water as you cross waves or  
wakes. Move the transducer a little lower to help prevent this.  
If you cruise or fish around lots of structure and cover, your transducer  
may be frequently kicking up from object strikes. If you wish, you may  
move the transducer a little higher for more protection.  
There are two extremes you should avoid. Never let the edge of the  
mounting bracket extend below the bottom of the hull. Never let the  
bottom – the face – of the transducer rise above the bottom of the hull.  
Shoot-thru-hull vs. Transom Mounting  
In a shoot-thru-hull installation, the transducer is bonded to the inside  
of the hull with epoxy. The sonar "ping" signal actually passes through  
the hull and into the water. This differs from a bolt-thru-hull  
installation (often called simply "thru-hull"). In that case, a hole is cut in  
the hull and a specially designed transducer is mounted through the  
hull with a threaded shaft and nut. This puts the transducer in direct  
contact with the water.  
Typically, shoot-thru-hull installations give excellent high speed  
operation and good to excellent depth capability. There is no possibility  
of transducer damage from floating objects, as there is with a transom-  
mounted transducer. A transducer mounted inside the hull can't be  
knocked off when docking or loading on a trailer.  
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However, the shoot-thru-hull installation does have its drawbacks.  
First, some loss of sensitivity does occur, even on the best hulls. This  
varies from hull to hull, even from different installations on the same  
hull. This is caused by differences in hull lay-up and construction.  
Second, the transducer angle cannot be adjusted for the best fish arches  
on your sonar display. (This is not an issue for flasher-style sonars.)  
Lack of angle adjustment can be particularly troublesome on hulls that  
sit with the bow high when at rest or at slow trolling speeds.  
Third, a transducer CAN NOT shoot through wood and metal hulls.  
Those hulls require either a transom mount or a thru-hull installation.  
Fourth, if your Skimmer transducer has a built in temp sensor, it will  
only show the temperature of the bilge, not the water surface temp.  
Follow the testing procedures listed in the shoot-thru-hull installation  
section at the end of this lesson to determine if you can satisfactorily  
shoot through the hull.  
Transom Transducer Assembly And Mounting  
The best way to install these transducers is to loosely assemble all of the  
parts first, place the transducer's bracket against the transom and see if  
you can move the transducer so that it's parallel with the ground.  
The following instructions sometimes vary depending on the mounting  
bracket that came with your transducer. Single-frequency Skimmers  
come with a one-piece stainless steel bracket, while dual-frequency  
Skimmers come with a two-piece plastic mounting bracket. Use the set of  
instructions that fits your model.  
1. Assembling the bracket.  
A. One-piece bracket: Press the two small plastic ratchets into the  
sides of the metal bracket as shown in the following illustration. Notice  
there are letters molded into each ratchet. Place each ratchet into the  
bracket with the letter "A" aligned with the dot stamped into the metal  
bracket. This position sets the transducer's coarse angle adjustment for a  
14° transom. Most outboard and stern-drive transoms have a 14° angle.  
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Dot  
Align plastic ratchets in bracket.  
B. Two-piece bracket: Locate the four plastic ratchets in the  
transducer's hardware package. Press two ratchets into the sides of the  
plastic bracket and two on either side of the transducer as shown in the  
following illustrations. Notice there are letters molded into each ratchet.  
Place the ratchets into the bracket with the letter "A" aligned with the  
alignment mark molded into the bracket. Place the ratchets onto the  
transducer with the letter "A" aligned with the 12 o'clock position on  
the transducer stem. These positions set the transducer's coarse angle  
adjustment for a 14° transom. Most outboard and stern-drive transoms  
have a 14° angle.  
Alignment letters  
Alignment  
positions  
Transducer  
Transducer bracket  
Insert and align ratchets.  
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Transducer  
bracket  
Transducer  
Ratchet  
Ratchet  
Add ratchets to bracket and transducer.  
2. Aligning the transducer on the transom.  
A. One-piece bracket: Slide the transducer between the two  
ratchets. Temporarily slide the bolt though the transducer assembly  
and hold it against the transom. Looking at the transducer from the  
side, check to see if it will adjust so that its face is parallel to the  
ground. If it does, then the "A" position is correct for your hull.  
If the transducer's face isn't parallel with the ground, remove the  
transducer and ratchets from the bracket. Place the ratchets into the  
holes in the bracket with the letter "B" aligned with the dot stamped  
in the bracket.  
Reassemble the transducer and bracket and place them against the  
transom. Again, check to see if you can move the transducer so it's  
parallel with the ground. If you can, then go to step 3A. If it doesn't,  
repeat step 2A, but use a different alignment letter until you can  
place the transducer on the transom correctly.  
Ratchets  
Insert bolt and check transducer position on transom.  
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B. Two-piece bracket: Assemble the transducer and bracket as shown  
in the following figure. Temporarily slide the bolt though the transducer  
assembly but don't tighten the nut at this time. Hold the assembled  
transducer and bracket against the transom. Looking at the transducer  
from the side, check to see if it will adjust so that its face is parallel to  
the ground. If it does, then the "A" positions are correct for your hull.  
If the transducer's face isn't parallel with the ground, remove and  
disassemble the transducer and ratchets. Place the ratchets into the  
bracket holes with the letter "B" aligned with the bracket alignment  
mark. Place them on the transducer aligned with the 12 o'clock  
position on the transducer stem.  
Reassemble the transducer and bracket and place them against the  
transom. Again, check to see if you can move the transducer so it's  
parallel with the ground. If you can, then go to step 3B. If it doesn't,  
repeat step 2B, but use a different alignment letter until you can  
place the transducer on the transom correctly.  
Lock washer  
Bolt  
Nut  
Flat washer  
Flat washer  
Assemble transducer and bracket.  
3. Assembling the transducer.  
A. One-piece bracket: Once you determine the correct position for  
the ratchets, assemble the transducer as shown in the following  
figure. Don't tighten the lock nut at this time.  
Metal  
washer  
Nut  
Rubber  
washers  
Metal washer  
Bolt  
Assemble transducer and bracket.  
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B. Two-piece bracket: Once you determine the correct position for  
the ratchets, assemble the transducer as shown in the figure in step  
2B. Don't tighten the lock nut at this time.  
4. Drilling mounting holes.  
Hold the transducer and bracket assembly against the transom. The  
transducer should be roughly parallel to the ground. The  
transducer's centerline should be in line with the bottom of the hull.  
Don't let the bracket extend below the hull!  
Mark the center of each slot for the mounting screw pilot holes. You  
will drill one hole in the center of each slot.  
Drill the holes. For the one-piece bracket, use the #29 bit (for the #10  
screws). For the two-piece bracket, use the #20 bit (for the #12  
screws).  
Transom  
Transom  
Position transducer mount on transom and mark mounting holes.  
Side view shown (left) and seen from above (right).  
5. Attaching transducer to transom.  
A. One-piece bracket: Remove the transducer from the bracket and  
re-assemble it with the cable passing through the bracket over the  
bolt as shown in the following figures.  
For single-frequency Skimmer, route cable over bolt and through  
bracket. Side view shown (left) and seen from above (right).  
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Both bracket types: Attach the transducer to the transom. Slide the  
transducer up or down until it's aligned properly with the bottom of  
the hull as shown in the preceding and following figures. Tighten the  
bracket's mounting screws, sealing them with the caulking compound.  
Adjust the transducer so that it's parallel to the ground and tighten  
the nut until it touches the outer washer, then add 1/4 turn. Don't  
over tighten the lock nut! If you do, the transducer won't "kick-up" if  
it strikes an object in the water.  
Bottom  
of  
hull  
Flat-bottom hull  
Deep-"vee" hull  
Align transducer centerline with hull bottom and attach transducer to  
transom. Rear view of dual-frequency Skimmer shown.  
6. Route the transducer cable through or over the transom to the sonar  
unit. Make sure to leave some slack in the cable at the transducer. If  
possible, route the transducer cable away from other wiring on the  
boat. Electrical noise from the engine's wiring, bilge pumps, VHF radio  
wires and cables, and aerators can be picked up by the sonar. Use  
caution when routing the transducer cable around these wires.  
WARNING:  
Clamp the transducer cable to the transom close to the  
transducer. This can prevent the transducer from  
entering the boat if it is knocked off at high speed.  
If you need to drill a hole in the transom to pass the connector through,  
the required hole size be 1".  
CAUTION:  
If you drill a hole in the transom for the cable, make sure it is  
located above the waterline. After installation, be sure to seal the  
hole with the same marine grade above- or below-waterline  
sealant used for the mounting screws.  
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7. Make a test run to determine the results. If the bottom is lost at  
high speed, or if noise appears on the display, try sliding the  
transducer bracket down. This puts the transducer deeper into the  
water, hopefully, below the turbulence causing the noise. Be careful  
not to install the transducer bracket below the bottom of the hull!  
TROLLING MOTOR BRACKET INSTALLATION  
(single-frequency only)  
1. Attach the optional TMB-S bracket to the transducer as shown in the  
following figure, using the hardware supplied with the transducer.  
(Note: The internal tooth washer is supplied with the TMB-S.)  
TMB-S bracket  
Internal tooth washer  
Bolt  
Nut  
Flat washer  
Attach motor mounting bracket to transducer.  
2. Slide the adjustable strap supplied with the TMB-S through the slot  
in the transducer bracket and wrap it around the trolling motor.  
Position the transducer to aim straight down when the motor is in  
the water. Tighten the strap securely.  
3. Route the transducer cable alongside the trolling motor shaft. Use  
plastic ties (not included) to attach the transducer cable to the  
trolling motor shaft. Make sure there is enough slack in the cable for  
the motor to turn freely. Route the cable to the sonar unit and the  
transducer is ready for use.  
Transducer mounted on trolling motor, side view.  
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TRANSDUCER ORIENTATION AND FISH ARCHES  
If you do not get good fish arches on your display, it could be because  
the transducer is not parallel with the ground when the boat is at rest  
in the water or at slow trolling speeds.  
Partial fish arches  
Transducer aimed  
too far back  
Transducer aimed  
too far forward  
Full fish arch  
Proper transducer angle  
Transducer angles and their effects on fish arches.  
If the arch slopes up – but not back down – then the front of the  
transducer is too high and needs to be lowered. If only the back half of  
the arch is printed, then the nose of the transducer is angled too far  
down and needs to be raised.  
NOTE:  
Periodically wash the transducer's face with soap and water to  
remove any oil film. Oil and dirt on the face will reduce the  
sensitivity or may even prevent operation.  
SHOOT-THRU-HULL PREPARATION  
Hulls With Floatation Materials  
The transducer installation inside a fiberglass hull must be in an area  
that does not have air bubbles in the resin or separated fiberglass  
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layers. The sonar signal must pass through solid fiberglass. A  
successful transducer installation can be made on hulls with flotation  
materials (such as plywood, balsa wood or foam) between layers of  
fiberglass if the material is removed from the chosen area.  
Fill with resin  
Fill with resin  
Inner hull  
Flotation material  
Epoxy to hull first  
Outer hull  
Use epoxy to place the transducer in a solid portion of the hull.  
For example, some (but not all) manufacturers use a layer of fiberglass,  
then a core of balsa wood, finishing with an outer layer of fiberglass.  
Removing the inner layer of fiberglass and the balsa wood core exposes  
the outer layer of fiberglass. The transducer can then be epoxied  
directly to the outer layer of fiberglass. After the epoxy cures for 24  
hours, fill the remaining space with polyester resin. When the job is  
finished, the hull is watertight and structurally sound. Remember, the  
sonar signal must pass through solid fiberglass. Any air bubbles in the  
fiberglass or the epoxy will reduce or eliminate the sonar signals.  
WARNING:  
Do not remove any material from your inner hull unless  
you know the hull's composition. Careless grinding or  
cutting on your hull can result in damage that could  
sink your boat. Contact your boat dealer or  
manufacturer to confirm your hull specifications.  
Testing Determines Best Location  
Ideally, the shoot-thru transducer should be installed as close to the  
transom as possible, close to the centerline. This will give you the best  
performance during high speed maneuvers.  
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Transducer location  
(high speed)  
Transducer location  
(trolling speed)  
Shoot-thru-hull transducer locations for  
high speed or trolling speed operation.  
To choose the proper location for shoot-thru-hull mounting, follow these  
testing procedures: (You may need a helper to complete these steps.)  
1. Anchor the boat in about 30 feet of water. Add a little water to the  
sump of the boat. Plug the transducer into the sonar unit, turn it on,  
then hold the transducer over the side of the boat in the water. Adjust  
the sensitivity and range controls until a second bottom echo is seen on  
the display. (You'll need to turn off Auto Sensitivity, Auto Depth Range  
and ASP. Try a range setting that is two to three times the water  
depth. The harder (more rocky) the bottom, the easier it will be to get a  
second bottom signal.) Don't touch the controls once they've been set.  
True bottom  
Second bottom  
Manual range setting  
Example of a second bottom signal. Unit is in 30 feet of water, with  
range set at 80 feet and sensitivity set at 87 percent.  
2. Next, take the transducer out of the water and place it in the water in  
the sump of the boat, face down. (The transducer face is shown in the  
figure on the following page.) Notice how the signal strength  
decreases. The second bottom signal will probably disappear and the  
bottom signal intensity will likely decrease.  
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3. Now move the transducer around to find the best location with the  
strongest possible bottom signal. If you find a spot with an acceptable  
bottom signal, mark the location and move on to step 4.  
If you can't get an acceptable bottom signal, try turning up the  
sensitivity by three or five keystrokes and then move the transducer  
around once more. If you find a spot that works, mark it and move on to  
step 4.  
If you have to turn up sensitivity by more than five keystrokes to get a  
good signal, the transducer should be mounted on the outside of the  
hull. This is especially true if you have to turn sensitivity all the way  
up to get a decent bottom signal.  
4. Most people can get good results by following steps 1 through 3, so this  
step is optional. If you want to make an extra effort to be absolutely sure  
that your selected location will work under all conditions, make a test  
run with the boat on plane and observe the bottom signal. You'll need to  
figure some way to prop the transducer into position while you make  
your test run. (A brick or two might be sufficient to hold it in place.)  
5. When you're satisfied with a location, mark it and proceed with  
the installation.  
Shoot-thru-hull Installation  
If you are installing the transducer on a hull with floatation material  
sandwiched within the hull, refer to the text "Hulls With Flotation  
Materials" beginning on page 22.  
1. Make sure the area is clean, dry and free of oil or grease, then sand  
both the inside surface of the hull and the face of the transducer with  
100 grit sandpaper. The sanded hull area should be about 1-1/2 times  
the diameter of the transducer. The surface of the hull must be flat  
so the entire transducer face is in contact with the hull prior to  
bonding. After sanding, clean the hull and transducer with rubbing  
alcohol to remove any sanding debris.  
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Spread epoxy here  
Sand this surface  
(unit's face)  
Orient the Skimmer  
with the nose facing  
the bow of the boat.  
To bow  
Epoxy transducer to hull.  
WARNING:  
Use only the epoxy available from LEI. It has been  
formulated to work with these installation procedures.  
Other epoxy types may be too thin or may not cure to the  
right consistency for optimum transducer performance.  
2. The epoxy consists of the epoxy itself and a hardener. Remove the  
two compounds from the package and place them on the paper plate.  
Thoroughly stir the two compounds together until the mixture has a  
uniform color and consistency. Do not mix too fast or bubbles will  
form in the epoxy. After mixing, you have 20 minutes to complete the  
installation before the epoxy becomes unworkable.  
Spread a thin layer of epoxy (about 1/16" or 1.5 mm thick) on the face  
of the transducer as shown in the previous figure. Make sure there  
are no air pockets in the epoxy layer! Then, apply the remaining  
epoxy to the sanded area on the hull.  
3. Press the transducer into the epoxy, twisting and turning it to force  
any air bubbles out from under the transducer face. Stop pressing  
when you bottom out on the hull. When you're finished, the face of  
the transducer should be parallel with the hull, with a minimum  
amount of epoxy between the hull and transducer.  
4. Apply a weight, such as a brick, to hold the transducer in place while  
the epoxy cures. Be careful not to bump the transducer while the  
epoxy is wet. Leave the weight in place for a minimum of three  
hours. Allow the epoxy to cure for 24 hours before moving the boat.  
5. After the epoxy has cured, route the cable to the sonar unit and it's  
ready to use.  
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Speed/Temperature Sensors  
Optional Speed Sensor Installation  
All the units in this series can display speed and distance traveled, but  
only the LCX-20C comes packed with a speed sensor. If you wish to  
purchase an optional additional sensor for your unit, refer to the  
accessory ordering information inside the back cover of this manual.  
The following instructions describe how to install the speed sensor.  
Recommended tools for this job include: drill, 7/8" drill bit, 1/8" drill bit  
for pilot holes, screwdriver. Required supplies for this job include: four  
#8 stainless steel wood screws (3/4" long), high quality, marine grade  
above- or below-waterline sealant.  
First find a location on the boat's transom where the water flow is  
smoothest. Don't mount the sensor behind strakes or ribs. These will  
disturb the water flow to the speed sensor. Make sure the sensor will  
remain in the water when the boat is on plane. Also make sure the  
location doesn't interfere with the boat's trailer. Typically, the sensor is  
mounted about one foot to the side of the transom's centerline.  
Once you've determined the proper location for the unit, place the  
sensor on the transom. The bottom of the bracket should be flush with  
the hull's bottom. Using the sensor as a template, mark the hull for the  
screws' pilot holes. Drill four 1/8" holes, one in each end of the slots.  
Mount the sensor to the hull using #8 stainless steel wood screws (not  
included). Use a high quality, marine grade above- or below-waterline  
sealant to seal the screws. Make sure the sensor is flush with the  
bottom of the hull and tighten the screws.  
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Good location  
Stern view showing good location for mounting sensor on transom.  
Transom  
Bottom of hull  
Bottom of hull  
Speed sensor mounting configuration:  
side view (left) and rear view (right.)  
If the base of the transom has a radius, fill the gap between the  
transom and the sensor with the sealant. This will help ensure a  
smooth water flow.  
Route the sensor's cable through or over the transom to the sonar unit.  
If you need to drill a hole in the transom to pass the connector through,  
the required hole size is 7/8".  
CAUTION:  
If you drill a hole in the transom for the cable, make sure it is  
located above the waterline. After installation, be sure to seal the  
hole with the same marine grade above- or below-waterline  
sealant used for the screws.  
The sensor is now ready for use. Connect the sensor to the sonar socket  
on the back of your unit and connect the transducer to the speed  
sensor's socket. If you have any questions concerning the installation of  
the sensor, please contact your local boat dealer.  
GPS Antenna/Receiver Module  
The LCX-20C packages include the LGC-2000 GPS module. This device  
contains the unit's external antenna and receiver for GPS and WAAS  
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signals. The antenna/receiver module comes with a 25-foot Y-adapter  
extension cable. This module can be mounted on a flat surface or pole,  
or an optional magnet is available for temporary mounting on any  
ferrous surface.  
LGC-2000 Module, bottom view (left) and top view (right).  
You need to select an antenna installation location that has a clear,  
unobstructed view of the sky. After the module is installed, connect it to  
the unit. The LGC-2000 can communicate with your GPS unit either  
directly (using the supplied extension cable) or through a NMEA 2000  
network.  
NOTE  
See the module’s instruction sheet, publication part number 988-  
0147-981, for complete installation instructions.  
In an automobile, you may achieve good results by simply placing the  
external antenna on the top of the dash, at the base of the windshield. A  
piece of the rubber non-skid shelf liner material available in recreational  
vehicle supply stores will help hold the antenna in place. This may not  
work well if you have a cab-over design pickup truck camper or motor  
home. If dashboard reception is poor, simply relocate the antenna module  
elsewhere on the vehicle for a clearer view of the sky.  
Connecting Directly to the Unit  
After the module is installed, attach it to the end of the Y-adapter  
extension cable as shown in the following diagram. To connect it to the  
unit, insert the extension cable's splitter plug into the Network socket  
on the back of the unit and your system is ready to use.  
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60-ohm  
terminator  
Splitter plug  
LGC-2000  
To unit  
25' Y-adapter  
extension cable  
LGC-2000 direct connection to GPS unit.  
NOTE:  
The extension cable’s shorter branch will have a 60-ohm terminator  
attached to it. Do not remove this terminator. When you're not  
connecting to a NMEA 2000 buss, you must leave the terminator  
connected to this socket for your antenna/receiver to function correctly.  
Connecting to a NMEA 2000 Network  
The LGC-2000 can be connected to a NMEA 2000 buss, providing GPS  
information to any Lowrance GPS units attached to the buss. Contact LEI  
Extras (look inside back cover for accessory ordering information) for a  
NMEA 2000 buss adapter cable if you would like to do this.  
There are two ways to connect the antenna to a NMEA 2000 network  
port. One method (shown in the following image) is to use the extension  
cable's Y-adapter to connect both the antenna and the unit to the same  
network port. To do this, simply remove the 60-ohm terminator shown in  
the previous image and attach the NMEA 2000 buss adapter cable to the  
shorter branch of the extension cable's Y-adapter. Connect the NMEA  
2000 buss adapter cable's other end to an available network port.  
To unit  
LGC-2000  
25' Y-adapter  
extension cable  
To NMEA 2000  
network port  
LGC-2000 and GPS unit connection to NMEA 2000 buss.  
You can also attach the antenna to a remote port on the network, and  
pass position information along the network. To do this, simply attach the  
LGC-2000's connector to one end of the buss adapter cable and attach the  
other to an available port on the NMEA 2000 buss, as shown in the  
following image. (You will have to use a similar adapter cable to connect  
the GPS unit to the NMEA buss as described later in this section.)  
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To NMEA 2000  
network port  
LGC-2000  
LGC-2000 remote connection to NMEA 2000 buss.  
NOTE:  
An existing operational NMEA 2000 buss will already have  
terminators in place and will already be powered. If you're connecting  
to such a network, you won't need the terminators or extension cable  
provided. Do not add terminators or power to a functional NMEA  
2000 buss!  
When the LGC-2000 is connected to the unit (directly or indirectly), it  
will begin providing GPS signal information.  
Power Connections  
Your unit comes with a power/data cable that splits into three ends,  
each with several exposed wires (shown in the following figure). The  
end with 4 wires (blue, yellow, orange and shield) is a Data cable that  
connects to a NMEA 0183 interface. The end with three wires (red,  
black and shield) is a power cable that connects to a NMEA 2000 buss.  
The thicker three-wire cable (red, black and white) is the Power Supply  
for your unit (and optional external speaker connection for some units).  
Power Supply wires:  
red, black and white  
To unit  
NMEA 2000 Power wires:  
red, black and shield  
Data Cable wires: blue,  
yellow, orange and shield  
The Power/Data cable for this unit.  
Depending on your configuration, you may not use all of these wires.  
The following segments include instructions for installing all the wires  
that you will use with this unit.  
Caution  
All of the wires in the power/data cable have bare ends for  
easier installation. The bare ends on any unused wires could  
cause an electrical short if left exposed. To prevent this, you  
should cover the individual wire ends – either by capping them  
with wire nuts or wrapping them with electrical tape. (You  
should cut off the bare wire before taping off the ends.)  
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Powering a NMEA 2000 Buss  
(NMEA 2000 Power cable)  
A NMEA 2000 buss must be connected to a power source to operate. If  
you have a pre-existing NMEA 2000 installation, it may already be  
connected to another power source. If your NMEA 2000 buss is already  
powered, you can ignore the NMEA 2000 Power cable. Never attach  
two power sources to a single NMEA 2000 buss.  
If you do need to power your NMEA 2000 buss, attach the NMEA 2000  
Power cable to your boat's battery just as indicated in the following  
segment for connecting your unit's Power Supply cable. The NMEA  
2000 Power cable's red wire should be attached (with provided 3-amp  
fuse) to the boat battery's positive terminal, and the NMEA 2000 Power  
cable's black and shield wires should both be attached to the battery's  
negative terminal.  
NOTE:  
If the NMEA 2000 buss draws power directly from the boat's battery,  
the LGC-2000 will remain on (drawing power) all the time. The LGC-  
2000's current draw is very small and shouldn't decrease the boat's  
storage battery life, but if this small draw is a concern, you can  
install a switch between the NMEA 2000 buss and the battery.  
Powering Your Unit  
(Power Supply cable – red and black wires)  
The unit works from a 12-volt battery system. For the best results,  
attach the power cable directly to the battery. You can attach the power  
cable to an accessory or power buss, however you may have problems  
with electrical interference. Therefore, it's safer to go ahead and attach  
the power cable directly to the battery.  
CAUTION:  
When using the unit in a saltwater environment, we strongly  
recommend that you shut off the power supply to the power cable  
when the unit is not in use. When the unit is turned off but still  
connected to a power supply, electrolysis can occur in the power  
cable plug. This may result in corrosion of the plug body along with  
the electrical contacts in the cable and the unit's power socket.  
In saltwater environments we recommend you connect the power  
cable to the auxiliary power switch included in most boat designs.  
If that results in electrical interference, or if such a switch is not  
available, we recommend connecting direct to the battery and  
installing an inline switch. This will let you shut off power to the  
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power cable when the unit is not in use. When you are not using  
the unit, you should always shut off power to the power cable,  
especially when the power cable is disconnected from the unit.  
If possible, keep the power cable away from other boat wiring, especially  
the engine's wires. This will provide the best isolation from electrical  
noise. If the cable is not long enough, splice #18 gauge wire onto it. The  
power cable has two wires, red and black. Red is the positive lead, black  
is negative or ground. (There is also a white wire to power an optional  
external speaker for some units.) Make sure to attach the in-line fuse  
holder to the red lead as close to the power source as possible.  
For example, if you have to extend the power cable to the battery or  
power buss, attach one end of the fuse holder directly to the battery or  
power buss. This will protect both the unit and the power cable in the  
event of a short. It uses a 3-amp fuse.  
External speaker wire  
(not used by this unit)  
To unit  
Red wire with  
3 amp fuse  
Black wire  
To power a  
NMEA 2000  
buss, also  
connect  
NMEA 2000  
Power cable  
to the boat's  
battery.  
Optional power off  
switch for salt-  
water installations  
12 volt  
battery  
Data Cable  
NMEA 2000 Power Cable  
Power connections for LCX-20C sonar/GPS unit.  
NOTE:  
If you're powering a NMEA 2000 buss, you will attach both the  
NMEA 2000 Power cable and the unit's Power Supply cable to the  
boat's battery. To attach the NMEA 2000 Power cable, connect the  
red wire to battery's + and black and shield wires to battery's –.  
WARNING:  
This product must be independently fused with the  
enclosed 3-amp fuse (or equivalent), even if you connect  
to a fused accessory or power buss.  
If a malfunction happens inside the unit, extensive  
damage can occur if the enclosed fuse is not used. As with  
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all electrical devices, this unit could be damaged to a  
point that it is unrepairable and could even cause harm  
to the user when not properly fused.  
CAUTION:  
Do not use this product without a 3-amp fuse wired into the power  
cable! Failure to use a 3-amp fuse will void your warranty.  
This unit has reverse polarity protection. No damage will occur if the  
power wires are reversed. However, the unit will not work until the  
wires are attached correctly.  
An optional 8-foot, CA-4 external power cable with a cigarette lighter  
adapter is available from Lowrance.  
NMEA 2000 Cable Connections  
NMEA 2000 is a new buss network specifically designed for boats. This is  
a very young industry standard and, at the time of printing, few boats  
being built now have a NMEA 2000 buss installed. Over the next few  
years, however, NMEA 2000 will become much more common. To help  
you get the most out of this technology, your Lowrance unit is designed  
to work with a NMEA 2000 network as soon as it becomes available.  
Connecting to a NMEA 2000 Network  
Your unit can be connected to a NMEA 2000 buss, receiving sensor  
information from any Lowrance units attached to the buss. Contact LEI  
Extras (look inside back cover for accessory ordering information) for a  
NMEA 2000 buss adapter cable if you would like to do this. You can  
connect both the unit and antenna module through the antenna's  
extension cable (as described earlier), or you can connect the unit directly  
to a network port. To do so, attach the adapter cable's manual locking  
collar connector to the Network port on the back of the sonar unit and  
attach the other end to an available port on the NMEA 2000 buss, as  
shown in the following image.  
To sonar  
unit's Network  
socket  
To NMEA 2000  
network port  
Lowrance unit direct connection to NMEA 2000 buss.  
As soon as the unit is connected to the network, it will begin receiving  
shared information. Please note the buss must be powered to operate.  
(See instructions in this section for more on powering NMEA 2000  
buss.)  
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NMEA 0183 Wiring  
(Data cable)  
To exchange NMEA 0183 data, this unit has one NMEA 0183 version  
2.0 communication port. Com port one (Com-1) can be used to receive  
NMEA format GPS data. The com port can also transmit NMEA format  
GPS data to another device.  
The four wires for the com port are combined with the Power Supply  
cable and NMEA 2000 Power cable to form the power/data cable (shown  
earlier). Com-1 uses the yellow wire to transmit, the orange wire to  
receive and the shield wire for signal ground. Your unit does not use  
the blue wire.  
Orange (Receive)  
Shield (Ground)  
NMEA Transmit  
Ground  
To Other  
GPS Receiver  
Com-1  
To unit  
Com-1 wiring to receive NMEA position information  
from some other GPS receiver.  
Yellow (Transmit)  
Shield (Ground)  
NMEA Receive  
Ground  
Com-1  
To unit  
To Other  
Device  
Com-1 wiring to transmit NMEA position information  
to another NMEA-compatible device.  
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Sonar unit,  
rear view  
Sonar socket  
Power/Data  
socket  
Network  
socket  
LGC 2000 25'  
extension cable  
60-ohm  
terminator  
NMEA 2000  
Power Cable  
SP-BL optional  
speed sensor  
Power  
Supply  
Cable  
Transducer  
NMEA 0183  
Data Cable  
GPS  
antenna  
module  
Cable connections.  
Mounting the Unit: Bracket or In-Dash  
You can install the unit on top of a dash with the gimbal bracket. It can  
also be installed in the dash or mounted on a portable power supply.  
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If you use the supplied bracket, you may be interested in the optional  
R-A-Mbracket mounting system. This converts the unit's gimbal  
bracket to a swivel mount, which can be used on the dash or overhead  
mounting positions.  
Optional R-A-M mounting system.  
Bracket Installation  
Mount the unit in any convenient location, provided there is clearance  
behind the unit when it's tilted for the best viewing angle. You should  
also make sure there is enough room behind the unit to attach the  
power, transducer and GPS antenna/receiver module cables. (A  
drawing on the next page shows the dimensions of a gimbal-mounted  
unit.)  
Holes in the bracket's base allow wood screw or through-bolt mounting.  
You may need to place a piece of plywood on the back side of thin  
fiberglass panels to reinforce the panel and secure the mounting  
hardware.  
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Cable hole  
Screw  
mounting  
hole  
Front  
Install the gimbal bracket. Place the bracket so the arms slope toward  
the front of your unit.  
Once a location is determined, use the bracket as a template and mark  
the mounting holes and the hole for the cables. Drill a 1-inch (25.4 mm)  
hole in the dash for the power, transducer and antenna cables. Screw  
the bracket to the mounting surface.  
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244  
[9.58]  
94  
[3.61]  
37.1  
[1.37]  
185  
[7.34]  
Millimeter  
[Inch]  
56.9  
[2.24]  
Front view (left) and side view (right) showing dimensions of the  
sonar/GPS unit when mounted on gimbal bracket.  
To pass all connectors through the 1" hole, first pass the transducer  
connector up through the hole from under the dash, followed by the  
antenna connector and any accessory cables. Next, pass the power  
cable's bare-wire end down though the hole from the top.  
If you wish, you can fill in the hole around the cables with a good  
marine caulking compound. No matter what type of installation you  
prefer, be sure to leave enough slack in the cables to allow tilting or  
swiveling the unit.  
Attach the unit to the gimbal bracket using the supplied gimbal knobs  
and washers. Attach the cables and the unit is ready to use.  
In-Dash Installation  
You can mount the unit in the dash with an optional FM-3 In-Dash  
Adapter Kit. The kit includes mounting hardware and a template for  
cutting the hole.  
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In-dash mounting template for this unit, showing dimensions.  
NOTE: The figure above is not printed to scale.  
MMC or SDC Memory Card Installation  
Your unit uses MultiMedia Cards to store information, such as sonar  
logs, custom maps, waypoints, trails and other data. The unit can also  
use Secure Digital Cards (SD card) to store data. The unit can use up to  
two cards; a MMC and a SD card can be used at the same time.  
NOTE:  
Throughout this manual, we will use the term MMC, but just  
remember your unit can use an MMC or SD card to store data.  
Both of these solid-state flash memory devices are about the size of a  
postage stamp. A SD card is slightly thicker than a MMC. MMCs are  
available in storage capacities of 8 MB, 16 MB, 32 MB and 64 MB. SD  
cards are available in capacities of 8 MB, 16 MB, 32 MB, 64 MB, 128  
MB, 256 MB and 1 GB.  
Additional MMC cards are available from LEI Extras; see ordering  
information inside the back cover of this manual. MMCs and SD cards  
are also available at many camera and consumer electronics stores.  
The MMC drawer is located on the front of the case. To install an  
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MMC, twist the drawer retainer counter-clockwise and pull. The  
drawer will come out of the unit. Place the MMC in the drawer face  
down (see following figures.)  
Insert cards face down  
Drawer  
retainer  
Memory card drawer on the LCX-20C.  
Slide the drawer back into the unit and twist the retainer clockwise.  
The MMC is now ready for use.  
Other Accessories  
MMC and MapCreate  
Other available accessories include MMC cards, MMC card readers and  
MapCreate™ 6 custom mapping software for your computer. MMC card  
readers are available in USB versions.  
MapCreate™ 6 CD-ROM, left; MMC card reader for USB ports, right.  
Switch Boxes  
Two switch boxes are available for this unit. The SB-7X transducer  
switch box switches two transducers to one sonar unit. The SB-8X  
transducer switch box switches two sonar units to one transducer.  
If these accessories are not available from your dealer, see the  
accessory ordering information on the inside back cover of this manual.  
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Visit our web site for a complete listing of all the available accessories  
for your unit.  
Face Cover  
Your unit comes with a white protective cover that snaps on and off the  
front of the unit. This cover is intended for use when your unit and the  
vehicle it's mounted in are idle.  
WARNING:  
When the unit is mounted in an unprotected area, such  
as an open boat cockpit, the protective face cover must  
be removed when the vehicle is moving at high speed.  
This includes towing a boat on a trailer at highway  
speeds. Otherwise, wind blast can pop off the cover.  
Now that you have your unit installed, move on to Sec. 3, Basic Sonar  
Operations. In Sec. 3. we'll present a series of step-by-step tutorials to  
teach you the basics of your sonar operation.  
NOTE:  
When you first turn the unit on, the Map Page appears. If you'd  
rather start learning about GPS operation first, turn to Sec. 6,  
Basic GPS Operations. (Remember, you don't need to read this  
manual from cover-to-cover to get going. We designed it so you can  
skip around to the section you want to read.)  
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Section 3:  
Basic Sonar Operation  
This section addresses the unit's most basic sonar operations. The  
instructions presented in Sec. 3 follow a chronological order. Sec. 4,  
Sonar Options & Other Features, will discuss other more advanced  
functions and utilities. Material in Sec. 4 is arranged in alphabetical  
order.  
Before you turn on the unit, it's a good idea to learn about the different  
keys, the Main Menu, the four Page screens and how they all work  
together. BUT, if you just can't wait to get on the water, turn to the  
one-page Quick Reference on page 51.  
Keyboard  
4
8
9
7
2
3
5
6
1
MMC drawer  
LCX-20C sonar/GPS unit, front view, showing sonar screen, keyboard  
and access door for the MMC compartment.  
1. PWR/LIGHT (Power & Light) – The PWR key turns the unit on and  
off and activates the backlight.  
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2. PAGES – Pressing this and the ← → arrow keys switches the unit  
between the four different page screens. (Satellite Status Page,  
Navigation Page, Map Page and Sonar Page.) Each page represents one  
of the unit's major operation modes.  
3. MENU – Press this key to show the menus and submenus, which  
allow you to select a command or adjust a feature. This also accesses  
search functions for streets, intersections, addresses and highway exits.  
4. ARROW KEYS – These keys are used to navigate through the  
menus, make menu selections, enter data and move the map and sonar  
chart cursors.  
5. ENT/ICONS (Enter & Icons) – This key allows you to save data,  
accept values or execute menu commands. It is also used to create  
event marker icons.  
6. EXIT – The Exit key lets you return to the previous screen, clear  
data and close menus.  
7. WPT – (Waypoint) The Waypoint key is used to save and recall  
waypoints, search for waypoints and access the waypoint list. It also  
launches the Point-of-Interest (POI) search menus and is involved in  
some navigation functions.  
8. ZOUT – (Zoom Out) – This key lets you zoom the screen out. On the  
Sonar Page, this key returns you to a full sonar chart display, showing  
the entire water column from surface to bottom. On the Map Page, this  
lets you see a larger geographic area on the map. Less detail is seen as  
you zoom out.  
9. ZIN – (Zoom In) – This key lets you zoom the screen in. On the Sonar  
Page, this key enlarges fish signals and bottom detail. On the Map  
Page, zooming in lets you see greater detail in a smaller geographic  
area on the map.  
Power/lights on and off  
To turn on the unit, press PWR. As the unit powers up, the Map Page is  
displayed first. To switch to the Sonar Page, press PAGES|→|EXIT.  
To turn on the backlight, press PWR again. The unit has three backlight  
levels to select from. Repeatedly pressing PWR will cycle through the  
backlight settings and turn off the backlight.  
Turn off the unit by pressing and holding the PWR key for 3 seconds.  
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Main Menu  
The unit has a Main Menu, which contains some function commands  
and some setup option commands. The instructions in this section will  
deal only with sonar functions, the basic commands that make the unit  
show sonar signals on your screen. This unit will work fine right out of  
the box with the factory default settings. But, if you want to learn  
about the various sonar options, see Sec. 4, Sonar Options & Other  
Features. (For general system setup and GPS options, see Sec. 8,  
System Setup and GPS Setup Options.)  
You can access the Main Menu from any of the four Page screens by  
pressing MENU|MENU. To clear the menu screen and return to the page  
display, press EXIT. (Remember, our text style for "MENU|MENU" means  
"press the Menu key twice." See a full explanation of our instruction  
text formatting on page 10, Instructions = Menu Sequences.)  
Main Menu.  
The Main Menu commands and their functions are:  
Screen command: changes the contrast or brightness of the display  
screen.  
Sounds command: enables or disables the sounds for key strokes and  
alarms and sets the alarm style.  
Transparency command: adjusts the level of transparency for menus.  
Alarms command: turns GPS alarms on or off and changes alarm  
thresholds.  
Route Planning command: used to plan, view or navigate a route.  
My Trails command: shows, creates and deletes plot trails. Also used  
to navigate or backtrack a trail.  
Cancel Navigation command: turns off the various navigation  
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commands. Used to stop navigating after you have reached your  
destination waypoint, Point of Interest or map cursor location; or after  
you reach the end of a route or trail.  
Sonar Setup command: sets various sonar options.  
GPS Setup command: sets various GPS receiver options.  
System Setup command: sets general configuration options.  
Sun/Moon Calculations command: finds the rising and setting time  
of the sun and the moon.  
Trip Calculator command: shows trip status and statistics.  
Timers command: controls the up timer, down timer and alarm clock  
settings.  
Browse MMC Files command: this allows you to view the installed  
MMC card and the files it contains.  
Pages  
The unit has four Page displays that represent the four major operating  
modes. They are the Satellite Status Page, the Navigation Page, the Map  
Page and Sonar Page. They are accessed by pressing the PAGES key, then  
using → or ← to select a Page. (Clear the Pages Menu by pressing EXIT.)  
Pages Menu, showing sonar display options.  
Satellite Status Page  
The Satellite Status Page provides detailed information on the status of  
the unit's satellite lock-on and position acquisition. To get to the  
Satellite Status Page: Press the PAGES key, then use → or ← to select  
STATUS. (Clear the Pages Menu by pressing EXIT.)  
This page represents a GPS function, so it is discussed in much greater  
detail in Sec. 6.  
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No matter what Page you are on, a flashing current position  
indicator/question mark symbol and flashing GPS data displays  
indicate that satellite lock has been lost and there is no position  
confirmed.  
WARNING:  
Do not begin navigating with this unit until the numbers  
have stopped flashing!  
Satellite Status Page.  
Navigation Page  
This screen has a compass rose that not only shows your direction of  
travel, but also the direction to a recalled waypoint. To get to the  
Navigation Page: Press PAGES| → or ← to NAVIGATION|EXIT.  
This page represents a GPS function, so it is discussed in much greater  
detail in Sec. 6.  
The Navigation Page (left); navigation with sonar (right).  
Map Page  
The Map Page screens show your course and track from a "bird's-eye"  
view, on a moving map. By default, this unit shows the map with north  
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always at the top of the screen. The arrow in the center of the screen is  
your present position. It points in the direction you're traveling.  
Map Page, showing position on Bull Shoals Lake, Arkansas. The full  
map option (left). Map with sonar option (right).  
Map Page is the default screen that appears when you turn on the unit.  
To get to the Map Page from another page: Press PAGES| → or ← to  
MAP|EXIT.  
You can display a split screen showing both the Map and Sonar pages  
at the same time. This feature is discussed in Sec. 4, Sonar Options &  
Other Features.  
The Map Page represents a GPS function, so it is discussed in much  
greater detail in Sec. 6.  
Sonar Page  
The Sonar Page displays the sonar chart. This is a "cross-section" view  
of the water column beneath the boat. The chart moves across the  
screen, displaying sonar signal echoes that represent fish, structure  
and the bottom.  
To get to the Sonar Page: Press the PAGES key, then use → or ← to  
select SONAR. (Clear the Pages Menu by pressing EXIT.) The Pages Menu  
offers five chart display options under the Sonar Page category. To access  
them, press PAGES|← or→ to SONAR|↓ to Option Name|EXIT.  
The Sonar Page has its own menu, which is used for advanced functions  
and for setting various options. (Sonar Options and other features are  
discussed in Sec. 4.) To Access the Sonar Page menu, from the Sonar  
Page press MENU.  
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Pages Menu, showing sonar chart display option commands (left).  
Sonar Page in full sonar chart display mode (right).  
Sonar chart display options (from left) split zoom and split frequency.  
Sonar chart display options (from left) digital data and FlashGraf.  
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Sonar Page Menu. Most of these functions are discussed in Sec. 4.  
Digital data  
Surface clutter  
Surface signal  
overlay  
(depth &  
Depth scale  
temperature)  
In FasTrack, fish  
arches show as  
horizontal bars.  
Fish arches  
Structure  
Zoom bar  
FasTrack  
bar graph  
Bottom signal  
Sonar Page, showing full sonar chart mode.  
You can customize how the Sonar Page displays its pictures and other data  
in many ways. Your unit also includes several special sonar features and  
options that can help you better interpret the underwater scene.  
We'll discuss all of those features and options in Sec. 4, but to show you  
how easy the unit is to operate, the following page contains a simplified,  
10-step quick reference that will cover most fish finding situations. The  
quick reference describes how your unit will operate with all the sonar  
features in their automatic modes, which are set at the factory.  
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LCX-20C Sonar Quick Reference  
1. Mount the transducer, antenna and unit. Connect the unit to electric  
power and the transducer. (If GPS operation is desired, connect GPS  
antenna, too.) Make sure the MMC is in. (See complete installation  
details beginning on page 11.)  
2. Launch your boat.  
3. To turn on the unit, press and release PWR key.  
4. Opening screen displays Map Page. Rotate through the four main  
Page screens (Map Page, Satellite Status Page, Navigation Page, Sonar  
Page) by pressing PAGES|← or → to select Page Name|EXIT. Switch  
Pages to display Sonar Page.  
5. If GPS data is desired, wait while unit locates satellites and calculates  
current position. When the unit acquires position, a tone sounds and a  
position acquired message appears.  
6. With position acquired (if desired), head for your fishing grounds.  
Your unit will automatically display digital depth and surface water  
temperature in the top left corner of the screen.  
The auto settings will track the bottom, displaying it in the lower  
portion of the screen. The full sonar chart will scroll from right to left,  
showing you what's under the boat as you cruise across the water. You  
can change the display by:  
Zoom in to enlarge the chart for more detail: press ZIN.  
Zoom out to return to full chart mode: press ZOUT.  
7. Watch the display for the appearance of fish arches. When you see  
arches, you've found fish! Stop the boat and get your lure or bait into  
the water at the depth indicated on the sonar chart.  
8. Gauge the fish depth by visually comparing the fish arches with the  
depth scale on the right side of the screen, or get a more accurate  
measure with the Depth Cursor. Press MENU|↓ to DEPTH CURSOR|ENT.  
Press ↓ to align the cursor line with the fish arch. The exact depth  
appears in a box at the right end of the cursor line. To clear the cursor,  
press EXIT.  
9. If you are drifting at a very low speed or anchored, you are not  
moving fast enough for a fish to return the tell-tale fish arch signal. As  
you drift over a fish, or as a fish swims through the transducer's signal  
cone, the fish echo will appear as a straight line suspended between the  
surface and the bottom.  
10. To turn off the unit, press and hold PWR key for three seconds.  
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Sonar Operations  
As you can see from the quick reference on the previous page, basic operation  
is pretty easy, right out of the box. If you are a sonar novice, try operating the  
unit with the factory defaults until you get a feel for how it's working.  
As you're learning the basics, there is one setting you might want to tinker  
with from time to time — Sensitivity.  
Sensitivity controls the unit's ability to pick up echoes. If you want to see  
more detail, try increasing the sensitivity, a little at a time. There are  
situations when too much clutter appears on the screen. Decreasing the  
sensitivity can reduce the clutter and show the strongest fish echoes, if fish  
are present. As you change the sensitivity setting, you can see the difference  
on the chart as it scrolls.  
Fig. 1  
Fig. 2  
Fig. 3  
Fig. 4  
These figures show results of different sensitivity levels on the same  
location. Fig. 1: Sensitivity at 88 percent. Typical of full auto mode. Fig.  
2: Sensitivity set at 75 percent. Fig. 3: Sensitivity set at 50 percent. Fig.  
4: Sensitivity set at 100 percent.  
You can change the sensitivity level whether you are in Auto  
Sensitivity mode or Manual Sensitivity mode. The adjustment method  
works the same in both modes, but gives you slightly different results.  
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Adjusting sensitivity in Auto Sensitivity Mode is similar to manually  
adjusting a car's speed with the accelerator pedal while cruise control is  
on. You can tell the car to run faster, but when you let off the gas the  
cruise control automatically keeps you from running slower than the  
minimum speed setting. In this unit, auto mode will let you increase  
sensitivity to 100 percent, but the unit will limit your minimum setting.  
This prevents you from turning sensitivity down too low to allow  
automatic bottom tracking. When you change the setting with auto  
turned on, the unit will continue to track the bottom and make minor  
adjustments to the sensitivity level, with a bias toward the setting you  
selected.  
Adjusting sensitivity in Manual Sensitivity Mode is similar to driving a  
car without cruise control — you have complete manual control of the  
car's speed. In this unit, manual mode allows you to set sensitivity at  
100 percent (maximum) or zero percent (minimum.) Depending on  
water conditions, the bottom signal may completely disappear from the  
screen when you reduce sensitivity to about 50 percent or less!  
Try adjusting sensitivity in both auto and manual modes to see how  
they work.  
To adjust sensitivity:  
1. Press MENU|ENT.  
2. The Sensitivity Control Bar appears. Press ↓ to decrease sensitivity;  
press ↑ to increase sensitivity. When it's set at the desired level, press  
EXIT. (When you reach the maximum or minimum limit, a tone sounds.)  
Sonar Menu with Sensitivity command selected (left). The Sensitivity  
Control Bar (right).  
NOTE:  
If you want to change the sensitivity in Manual Mode, first turn off  
Auto Sensitivity: from the Sonar Page, press MENU|↓ to AUTO  
SENSITIVITY|ENT|↑ to SENSITIVITY|ENT. Press ↓ or ↑ to pick a different  
sensitivity setting. When it's set at the desired level, press EXIT.  
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Important Tip:  
While you are experimenting and learning, it's possible to scramble  
the settings so that the sonar picture disappears from your screen.  
If that happens, remember that it's easy to switch back to full  
automatic operation by simply restoring the factory auto settings.  
Here's how:  
To Restore Factory Settings  
1. Press MENU|MENU|↓ to SYSTEM SETUP|ENT|↓ to RESET  
OPTIONS|ENT.  
2. The unit asks if you want to reset all the options. Press ← to  
YES|ENT. All options are reset, and the unit reverts back to the Map  
Page at the 4000-mile zoom range. (Any recorded sonar logs or GPS  
data will be unchanged.)  
Fish Symbols vs. Full Sonar Chart  
You may have noticed in the quick reference that we used fish arches in  
full sonar chart mode for our example, and not the popular Fish I.D.  
fish symbol feature. Here's why.  
Fish I.D. is an easier way for a sonar novice to recognize a fish signal  
return when he sees it. However, locating a fish via symbol has some  
limitations.  
Your sonar unit's microprocessor is remarkably powerful, but it can be  
fooled. Some of the echoes calculated to be fish could be tree limbs or  
turtles! To see what's under your boat in maximum detail, we  
recommend you turn off Fish I.D. and begin learning to interpret fish  
arches.  
Fish I.D. is most handy when you're in another part of the boat or  
performing some task that prevents you from watching the sonar  
screen. Then, you can turn on Fish I.D. and the audible fish alarm.  
When that lunker swims under your boat, you'll hear it!  
Fish I.D. can also be useful when you want to screen out some of the  
sonar detail gathered by your unit. For example, in one case, fisherman  
in San Francisco Bay saw clouds of clutter in the water but no fish  
arches. When a downrigger was pulled up, it brought up several small  
jellyfish. The fisherman switched their Lowrance sonar to Fish I.D.,  
which screened out the schools of jellyfish and clearly showed the game  
fish there as fish symbols.  
Other Free Training Aids  
The sonar options section discusses Fish I.D., fish alarms and other  
features in greater detail. If you or a friend has Internet access, you can  
also learn more about interpreting what you see on your sonar screen.  
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Visit our web site, www.lowrance.com. Be sure to check out the free  
Sonar Tutorial, which includes animated illustrations and more  
pictures of actual sonar returns, all described in detail. There's even a  
"printer friendly" version of the tutorial available on our web site…it  
makes a great supplement to this operation manual!  
You can also download a free copy of our Sonar Viewer software. This  
PC-based software application plays back any sonar chart log recorded  
with a Lowrance sonar product. Features include:  
•
Adjustable range, zoom, sensitivity, color line, noise rejection,  
surface clarity, etc. of the recorded file.  
•
•
Color interpretation of sonar signals can be user defined.  
Operates like a Windows Multimedia Player with forward,  
reverse, pause, fast forward, fast reverse, and scroll buttons.  
•
•
•
•
Adjustments update the entire record displayed  
Can print in full color.  
Window can dynamically be sized on your monitor.  
Mouse cursor shows GPS position, depth and sounding number  
anywhere on the visible record.  
For the ultimate training aid, be sure to download the free emulator  
software for your unit. Aside from being just plain fun, this program  
can help you learn both basic and advanced operations without burning  
boat fuel! Lowrance is the first sonar manufacturer to provide this type  
of training tool for customers.  
This PC application simulates the actual sonar/GPS unit on your  
computer. You can run it from your computer keyboard or use your  
mouse to press the virtual keys. Easy download and installation  
instructions are available on our web site.  
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A free training emulator is available for your unit on our web site.  
The emulator works exactly like your real sonar/GPS unit. Using the  
Sonar Simulator and GPS Simulator features, it allows you to play  
back sonar logs, run GPS routes and trails, even create real waypoints  
you can use in the field! You can even take snapshots of the Sonar  
Chart and print them or e-mail them to friends.  
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Section 4:  
Sonar Options & Other Features  
Material in this section is arranged in alphabetical order.  
ASP(Advanced Signal Processing)  
The ASPfeature is a noise rejection system built into the sonar unit  
that constantly evaluates the effects of boat speed, water conditions  
and interference. This automatic feature gives you the best display  
possible under most conditions.  
The ASP feature is an effective tool in combating noise. In sonar terms,  
noise is any undesired signal. It is caused by electrical and mechanical  
sources such as bilge pumps, engine ignition systems and wiring, air  
bubbles passing over the face of the transducer, even vibration from the  
engine. In all cases, noise can produce unwanted marks on the display.  
The ASP feature has four settings — Off, Low, Medium and High. If  
you have high noise levels, try using the "High" ASP setting. However,  
if you are having trouble with noise, we suggest that you take steps to  
find the interference source and fix it, rather than continually using the  
unit with the high ASP setting.  
There are times when you may want to turn the ASP feature off. This  
allows you to view all incoming echoes before they are processed by the  
ASP feature.  
Sonar Menu with Sonar Features selected (left). The Sonar Features  
menu (right), Noise Rejection selected with ASP at default low setting.  
To change the ASP level:  
1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.  
2. Press ↓ to NOISE REJECTION|ENT.  
3. Press ↓ or ↑ to select a setting, then press ENT.  
4. To return to the previous page, press EXIT|EXIT.  
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Alarms  
This unit has three different types of sonar alarms. The first is the Fish  
Alarm. It sounds when the Fish I.D.feature determines an echo is a  
fish.  
Another alarm is the Zone Alarm, which consists of a bar on the side of  
the screen. Any echo on the chart that appears inside this bar triggers  
the alarm.  
The last alarm is the Depth Alarm, which has both a Shallow and a  
Deep setting. Only the bottom signal will trigger this alarm. This is  
useful as an anchor watch, a shallow water alert, or for navigation.  
Depth Alarms  
The depth alarms sound a tone when the bottom signal goes shallower  
than the shallow alarm's setting or deeper than the deep alarm's  
setting. For example, if you set the shallow alarm to 10 feet, the alarm  
will sound a tone if the bottom signal is less than 10 feet. It will  
continue to sound until the bottom goes deeper than 10 feet.  
The deep alarm works just the opposite. It sounds a warning tone if the  
bottom depth goes deeper than the alarm's setting. Both depth alarms  
work only off the digital bottom depth signals. No other targets will trip  
these alarms. These alarms can be used at the same time or individually.  
Main Menu and Sonar Alarms command (left);  
The Sonar Alarms menu (right).  
To adjust and turn on the shallow alarm:  
1. Press MENU|MENU|↓ to ALARMS|ENT|↓ to SONAR ALARMS|ENT.  
2. Press → to SHALLOW ALARM DEPTH|ENT.  
3. Press ↑ or ↓ to change the first number, then press → to move the  
cursor to the next number and repeat until the depth is correct, then  
press ENT.  
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4. Press ← to SHALLOW ALARM ENABLED|ENT|EXIT|EXIT|EXIT.  
5. To turn off the alarm, press MENU|MENU|↓ to ALARMS|ENT|↓ to  
SONAR ALARMS|ENT|ENT|EXIT|EXIT|EXIT.  
To switch to a different depth setting, open the Sonar Alarms menu and  
repeat the instructions in step 3 above.  
To adjust and turn on the deep alarm:  
1. Press MENU|MENU|↓ to ALARMS|ENT|↓ to SONAR ALARMS|ENT.  
2. Press ↓ to DEEP ALARM ENABLED|→ to DEEP ALARM DEPTH|ENT.  
3. Press ↑ or ↓ to change the first number, then press → to move the  
cursor to the next number and repeat until the depth is correct, then  
press ENT.  
4. Press ← to DEEP ALARM ENABLED|ENT|EXIT|EXIT|EXIT.  
5. To turn off the alarm, press MENU|MENU|↓ to ALARMS|ENT|↓ to  
SONAR ALARMS|ENT|↓ to DEEP ALARM ENABLED|ENT|EXIT|EXIT|EXIT.  
To switch to a different depth setting, open the Sonar Alarms menu and  
repeat the instructions in step 3 above.  
Zone Alarm  
The zone alarm is triggered when any echo passes inside the zone  
alarm bar, shown on the right side of the screen.  
To adjust and turn on the zone alarm:  
1. Press MENU|MENU|↓ to ALARMS|ENT|↓ to SONAR ALARMS|ENT.  
2. Press ↓ to ZONE ALARM ENABLED|→ to ADJUST ZONE|ENT.  
Sonar Alarms menu, with Adjust Zone command selected (left); Adjust  
Zone Alarm selection box, with Upper Limit selected (right).  
3. To set the upper boundary for the Zone Alarm, use ← or→ to select  
UPPER, then press ↑ or ↓ to move the top of the bar to the desired depth.  
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4. To set the lower boundary for the Zone Alarm, use ← or→ to select  
LOWER, then press ↑ or ↓ to move the bottom of the bar to the desired  
depth.  
5. Press EXIT|← to ZONE ALARM ENABLED|ENT|EXIT|EXIT|EXIT. Now, any  
echo — fish, bottom, structure — within the zone alarm's depth range  
will trigger the zone alarm.  
6. To turn off the alarm, press MENU|MENU|↓ to ALARMS|ENT|↓ to  
SONAR ALARMS|ENT|↓ to ZONE ALARM ENABLED|ENT|EXIT|EXIT|EXIT.  
To switch to a different depth setting, open the Sonar Alarms menu and  
repeat the instructions in steps 3 and 4 above.  
Fish Alarm  
Use the fish alarm for a distinctive audible alarm when fish or other  
suspended objects are detected by the Fish I.D.feature (Fish I.D.  
must be turned on for the Fish Alarm to work). A different tone sounds  
for each fish symbol size shown on the display.  
Sonar Alarms menu with Fish Alarm selected. The checkbox is blank,  
indicating the alarm is turned off.  
To turn the fish alarm on:  
1. Press MENU|MENU|↓ to ALARMS|ENT|↓ to SONAR ALARMS|ENT.  
2. Press ↓ to FISH ALARM|ENT|EXIT|EXIT|EXIT.  
3. To turn off the alarm, press MENU|MENU|↓ to ALARMS|ENT|↓ to  
SONAR ALARMS|ENT|↓ to FISH ALARM|ENT|EXIT|EXIT|EXIT.  
Calibrate Speed  
The speed sensor can be calibrated to compensate for inaccuracies.  
Before you change the setting, first calculate the percentage that the  
speed is off. You will enter this percentage in a moment.  
For example, if you figure the sensor is reading 10 percent faster than  
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actual speed, you will enter – 10 in the calibration window. If the  
sensor is reading 5 percent slower than true speed, you will enter + 5 in  
the window.  
A good way to gauge your speed sensor's performance is to compare its  
reading with the ground speed measured by your unit's GPS functions.  
When you make a run to compare GPS ground speed to speed sensor  
speed, perform your test in relatively calm water free of current, if  
possible. (Unless, of course, you are taking the current speed into  
consideration when making your calculation.) After you have a  
correction figure, here's how to enter it:  
1. Press MENU|MENU|↓ to SONAR SETUP|ENT|↓ to CALIBRATE WATER  
SPEED|ENT.  
2. Enter the number you calculated earlier: press ↑ or ↓ to change the  
first character (+ or –), then press → to move the cursor to the next  
number and repeat until the percentage is correct, then press EXIT.  
Chart Speed  
The rate echoes scroll across the screen is called the chart speed. The  
default is maximum. We recommend you leave the setting there for  
virtually all fishing conditions.  
You, however, might consider experimenting with chart speed when  
you are stationary or drifting very slowly. You may sometimes achieve  
better images as you slow the chart speed to match how fast you are  
moving across the bottom.  
If you are at anchor, ice fishing or fishing from a dock, experiment with  
a chart speed around 50 percent. If you are drifting slowly, try a chart  
speed around 75 percent. When you are stationary and a fish swims  
through the sonar signal cone, the image appears on the screen as a  
long line instead of a fish arch. Reducing the chart speed may result in  
a shorter line that more closely resembles a regular fish return.  
Sonar Page menu with Chart Speed command selected (left);.  
The Chart Speed Control Bar (right).  
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If you do experiment with chart speed, remember to reset it to  
maximum when you resume trolling or moving across the water at  
higher speed. To change chart speed:  
1. From the Sonar Page, press MENU|↓ to CHART SPEED|ENT.  
2. The Chart Speed Control Bar appears. Press ↓ to decrease chart  
speed; press ↑ to increase chart speed.  
3. When it's set at the desired level, press EXIT.  
ColorLine  
ColorLine lets you distinguish between strong and weak echoes. It  
"paints" a brighter color on targets that return a stronger signal. This  
allows you to tell the difference between a hard and soft bottom. For  
example, a soft, muddy or weedy bottom returns a weaker signal, which  
is shown with a narrow, colored line (dark blue tinged with red or a  
little yellow.) Since fish are among the weakest echoes, they show up  
mostly as blue arches. A hard bottom or other relatively hard target  
returns a strong signal displayed as a wide, brightly colored line  
(reddish yellow to bright yellow.)  
If you have two signals of equal size, one with red to yellow color and  
the other without, then the target with brighter color (yellow) is the  
stronger signal. This helps distinguish weeds from trees on the bottom,  
or fish from structure.  
ColorLine is adjustable. Experiment with your unit to find the  
ColorLine setting that's best for you.  
Sonar Page menu with ColorLine command selected (left);.  
The ColorLine control bar (right).  
To adjust the ColorLine level:  
1. From the Sonar Page, press MENU|↓ to COLORLINE|ENT.  
2. The ColorLine Control Bar appears. Press ↓ to decrease ColorLine;  
press ↑ to increase Colorline.  
3. When it's set at the desired level, press EXIT.  
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Fig. 1A  
Fig. 1B  
Fish near  
structure  
Hard  
structure  
Colorline  
Fig. 2A  
Fig. 2B  
Hard  
bottom  
Muddy  
bottom  
Colorline  
Fig. 3A  
Fig. 3B  
Hard  
bottom  
Muddy  
bottom  
ColorLine  
The "A" figures to the left show locations with ColorLine set at the  
factory level of 70 percent. The "B" figures on the right show the same  
locations with ColorLine increased to 84 percent. In Figure 1B, no fish  
are near the left structure, but the right structure shows fish holding  
next to the structure.  
Depth Cursor  
The depth cursor consists of a horizontal line with a digital depth box on  
the right side. The numbers inside the box show the depth of the cursor.  
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Depth box  
Cursor line  
Sonar Page menu with Depth Cursor command selected (left). Sonar  
chart with the depth cursor active (right). The line indicates the large  
fish is 21.95 feet deep.  
The cursor can be moved to any location on the screen, letting you  
pinpoint the depth of a target.  
1. From the Sonar Page, press MENU|↓ to DEPTH CURSOR|ENT.  
2. The depth cursor appears. Press ↓ to lower the cursor line; press ↑ to  
raise the cursor line.  
3. To clear the depth cursor, press EXIT.  
Depth Range - Automatic  
When turned on for the first time, the bottom signal is automatically  
placed in the lower half of the screen. This is called Auto Ranging and  
is part of the automatic function. You can change the range to a  
different depth, depending upon the bottom depth and the current  
range. To do this:  
1. From the Sonar Page, press MENU|↓ to DEPTH RANGE|ENT.  
Sonar Page menu with Depth Range command selected (left); The  
Depth Range Control Scale (right).  
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2. The Depth Range Control Scale appears. Press ↑ or ↓ to select a  
different depth range. A blue bar highlights the selected range. The  
lighter range numbers can not be selected.  
3. When the new range is selected, press EXIT to clear the menu.  
Depth Range - Manual  
You have complete control over the range when the unit is in the  
manual mode. There are 16 depth ranges, from 5 to 4,000 feet.  
To switch to Manual Depth Range:  
1. First, turn off automatic depth range. From the Sonar Page, press  
MENU|↓ to AUTO DEPTH RANGE|ENT.  
2. Press ↑ to DEPTH RANGE|ENT and the Depth Range Control Scale appears.  
3. Press ↓ or ↑ to select a different depth range. A horizontal blue bar  
highlights the selected range.  
4. When the new range is selected, press EXIT to clear the menu.  
To turn Auto Depth Range on again:  
From the Sonar Page, press MENU|↓ to AUTO DEPTH RANGE|ENT|EXIT.  
NOTE:  
The sonar's depth capability depends on the transducer  
installation, water and bottom conditions, and other factors.  
Depth Range - Upper and Lower Limits  
Virtually any segment of the water column can be displayed by using  
the upper and lower limit feature. This lets you pick the shallow and  
deep range limits shown on the screen, provided there is at least 10 feet  
between the upper and lower limit you select. For example, a range  
from 12 feet to 34 feet could be used.  
Changing the upper and lower limits gives you far greater control over  
the depth range. This feature lets you "zoom in" the display in almost  
unlimited combinations. Nearly any segment of the water column, from  
the surface to the bottom can be shown. This enlarges the sonar targets  
to best suit your fishing needs and water conditions.  
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Sonar Page Menu with Upper and Lower Limits command selected  
(left); Sonar Chart Limits menu, with Upper Limit selected (right).  
To change the upper and lower limits:  
1. From the Sonar Page, press MENU|↓ to UPPER AND LOWER LIMITS|ENT.  
The Sonar Chart Limits menu appears, with Upper Limit selected.  
2. To set the upper limit, press ENT. Press ↑ or ↓ to change the first  
number, then press → to move the cursor to the next number and  
repeat until the depth is correct, then press EXIT.  
3. To set the lower limit, press ↓ to LOWER LIMIT|ENT. Press ↑ or ↓ to  
change the first number, then press → to move the cursor to the next  
number and repeat until the depth is correct, then press EXIT|EXIT|EXIT.  
Fish arches  
Area "zoomed"  
Normal display, in auto depth range mode, (left); Display "zoomed" with  
Upper and Lower Limits focusing on the portion of the water column  
from 25 feet to 45 feet deep (right). In the "zoomed" image on the right,  
note the target definition, showing two fish holding just off the structure.  
To turn off upper and lower limits:  
From the Sonar Page, press MENU|↓ to AUTO DEPTH RANGE|ENT|EXIT.  
FasTrack  
This feature automatically converts all echoes to short horizontal lines  
on the display's far right side. The graph on the rest of the screen  
continues to operate normally. FasTrack gives you a rapid update of  
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conditions directly under the boat. This makes it useful for ice fishing,  
or when you're fishing at anchor. When the boat is not moving, fish  
signals are long, drawn out lines on a normal chart display. FasTrack  
converts the graph to a vertical bar graph that, with practice, makes a  
useful addition to fishing at a stationary location.  
Fish arches  
FasTrack,  
Structure  
fish arches  
show as  
horizontal  
bars.  
Colorline  
Bottom signal  
FasTrack  
bar graph  
Sonar Page showing FasTrack.  
Fish I.D.(Fish Symbols & Depths)  
The Fish I.D. feature identifies targets that meet certain conditions as  
fish. The microcomputer analyzes all echoes and eliminates surface  
clutter, thermoclines, and other undesirable signals. In most instances,  
remaining targets are fish. The Fish I.D. feature displays fish symbols  
on the screen in place of the actual fish echoes.  
There are several fish symbol sizes. These are used to designate the  
relative size between targets. In other words, Fish I.D. displays a small  
fish symbol when it recognizes a target as a small fish, a medium fish  
symbol on a larger target and so on.  
The sonar's microcomputer is sophisticated, but it can be fooled. It can't  
distinguish between fish and other suspended objects such as trotlines,  
turtles, submerged floats, air bubbles, etc. Individual tree limbs  
extending outwards from a group of limbs is the hardest object for the  
Fish I.D. feature to distinguish from fish.  
You may see fish symbols on the screen when actually, there are no  
fish. The reverse also is true.  
Does that mean Fish I.D. is broken? No. The feature is simply  
interpreting sonar returns in a specific way to help take some of the  
work out of reading the screen. Remember: Fish I.D. is one of the many  
tools we provide so you can analyze your sonar returns for maximum  
fish finding information. This and other features can help you  
successfully "see" beneath the boat under varied water and fishing  
conditions. Practice with Fish I.D. mode on and off to become more  
familiar with it. The default for Fish I.D. is off.  
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The Sonar Features menu.  
To turn the Fish I.D. feature on:  
1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.  
2. Press → to FISH SYMBOLS|ENT|EXIT|EXIT.  
To turn off Fish I.D., repeat the instructions in step 1.  
Fig. 1 B  
Fig. 1 A  
Fish symbols appear  
in surface clutter  
Many fish  
arches visible  
Fewer fish  
symbols visible  
Fig. 2 B  
Fig. 2 A  
No fish shown  
Fish arches  
above structure  
Figures 1A and 2A (left) show Sonar Page in normal chart mode. Figures  
1B and 2B (right) show the same underwater scene with Fish I.D. turned  
on. Note how arches are replaced with symbols.  
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FishTrack  
The FishTrack feature shows the depth of a fish symbol when it  
appears on the display. This lets you accurately gauge the depth of  
targets. This feature is available only when the Fish I.D. feature is on.  
The default setting for FishTrack is off.  
To turn on FishTrack:  
(Note: These instructions will turn on FishTrack and Fish I.D. at the  
same time.)  
1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.  
2. Press → ↓ to FISH DEPTHS|ENT|EXIT|EXIT.  
To turn off FishTrack, repeat the instructions in step 1. Turning off  
FishTrack in this manner will not turn off Fish I.D. symbols.  
Symbols with  
FishTrack depths  
Sonar Features menu with Fish I.D. Depths selected (left). When the  
check box to the left is unchecked, the feature is off. Sonar Page  
showing Fish I.D. symbols and FishTrack depths turned on (right).  
Frequency (Change Transducer Frequency)  
(Dual-Frequency Transducers only)  
A dual-frequency transducer operates with both 200 kHz and 50 kHz.  
The 200 kHz frequency has a 12° cone angle and the 50 kHz frequency  
has a 35° cone angle.  
The default frequency is 200 kHz, which is best for use in shallow water  
(about 300 feet or less). This frequency is the best choice for about 80  
percent of the fresh and salt water sport fishing applications. When you  
get into very deep salt water, 300 to 500 feet or deeper, the 50 kHz  
frequency is the best choice.  
The 200 kHz transducer will give you better detail and definition, but  
less depth penetration. The 50 kHz transducer will give you greater  
depth penetration, but a little less detail and less definition. (Remember,  
all sonar units typically read deeper in fresh water than in salt water.)  
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There is a common exception to these rules of thumb. Some fishermen  
on freshwater lakes (or the ocean) using downriggers like to see them  
on the sonar. In many of those cases, you'll see a 50 kHz transducer  
frequency in use because the wider cone angle lets them watch the bait.  
Sonar Features menu with a frequency of 200 kHz selected.  
To change the frequency setting to 50 kHz:  
1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.  
2. Press → ↓ to 50 KHZ|ENT.  
3. Press EXIT|EXIT to clear the menu.  
To change the frequency setting to 200 kHz:  
1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.  
2. Press→ ↓ to 200 KHZ|ENT.  
3. Press EXIT|EXIT to clear the menu.  
HyperScroll  
See the entry on Ping Speed, which controls the HyperScroll feature.  
Log Sonar Chart Data  
If you have an MMC installed in the unit, the sonar data shown on the  
screen can be saved to it. This can be played back at any time. (To play  
a recorded sonar chart log, see the entry in this section for Sonar  
Simulator.) If you have a personal computer and internet access,  
download our free Sonar Viewer and your unit’s emulator at our web  
site, www.lowrance.com. That will allow you to replay sonar logs on  
your personal computer.  
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The Sonar Page menu with the Log Sonar Chart Data command  
selected (left). Sonar Chart Logging menu, with the Start Logging  
command selected (right). The MMC has 11.7 MB of free space, which  
will record the scrolling chart for 20 minutes and 44 seconds.  
To record or log chart data:  
1. Press MENU|↓ to LOG SONAR CHART DATA|ENT.  
2. To record data using the default settings, press ENT. The menu clears  
and the Sonar Page title bar shows the name of the file you are  
recording. Warning messages will appear as recording time begins to run  
out.  
NOTE:  
You can change any of the settings by using the cursor arrows to  
highlight different commands. Select FILE NAME if you want to  
change the name. Select CHART QUALITY if you want to lower the file  
quality and record for a longer period of time. After you've changed  
the settings, select START LOGGING.  
Noise Rejection  
See the entry on Advanced Signal Processing in this section.  
Overlay Data  
On any Page display except Satellite Status, you can "float" or overlay  
additional Sonar or data on the screen with the Overlay Data  
command. The various data available from your unit are divided into  
categories in the Overlay Data menu. These categories include GPS  
Data, Navigation, Trip Calculator, Time, Sonar Data and  
Miscellaneous Data.  
You can select items from any of these categories for display, in any  
combination. The category divisions are there only to help you sort  
through the information.  
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Overlay Data Shown window (left); Data viewer with the Sonar Data  
category expanded (right).  
To overlay information on your screen:  
1. Press MENU|↓ to OVERLAY DATA|ENT.  
2. If you have overlay data on your display, you’ll see a list of that data  
on the overlay data shown menu. To add data select (ENTER TO ADD) and  
press ENT. The data viewer shows information categories with "+" or "–"  
symbols next to each category name. A category with a "+" next to it is  
expandable, meaning its contents are hidden.  
Selecting the category name and pressing ENT will show the category's  
contents, so you can choose items within it. An expanded category (one  
with a "–" next to its name) can be collapsed to hide its contents. Just  
select the category and press ENT.  
3. Expand any categories that might contain data you want to display.  
Then press ↓ or ↑ to select a data option.  
4. With the data option highlighted, press ENT to check it (turn it on) or  
uncheck it (turn it off). As you turn it on, the data will appear on top of  
the screen. Every Page display has a maximum number of items you  
can show using the Overlay Data command.  
5. After the desired changes are made, press EXIT|EXIT to return to the  
page display.  
To remove overlaid data:  
1. While on the Page display that shows the item or items you want to  
remove, press MENU|↓ to OVERLAY DATA|ENT.  
2. You'll see a list of the overlay data currently displayed. Select the  
item you want to remove from your display and press ENT|ENT to  
remove the data. To remove another item, select the item and press  
ENT|ENT.  
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3. When you have finished removing all the items you want from the  
screen, press EXIT to return to the page display.  
Overlay Data Shown, with water speed selected (left). Press ENT to  
access REMOVE option (right). Press ENT again to remove item and  
return to the Overlay Data Shown screen.  
To move overlaid data:  
You may find it useful to rearrange data floating in your display  
window.  
1. Press MENU|↓ to OVERLAY DATA|ENT.  
2. You'll see a list of the overlay data currently displayed. Select the  
item you want to move and press ENT|→ to MOVE|ENT.  
3. The data begins to flash on your screen. Use any combination of →,  
←, ↑ and ↓ to move the data to a new location on the screen.  
4. When satisfied, press EXIT|EXIT.  
NOTE:  
The Customize command and the Overlay Data command both use  
the same information categories. The difference between the two  
commands is the Customize command is only used to modify pages  
with digital data boxes, while Overlay Data changes information  
floating on the screen. See Customize Page Displays, on page 82 for  
information on customizing data boxes.  
To change displayed data font size:  
1. From the Map or Sonar page, press MENU|↓ to OVERLAY DATA|ENT.  
2. Press ↓ or ↑ to select Data Type|press → or ← to Data Size|EXIT.  
The selected data type will be displayed in the new size. (To change the  
font size of another data type repeat these steps, beginning with step  
two above.)  
3. To return to the previous page, press EXIT.  
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The overlay data on this sonar display includes, Depth, Temperature,  
Ground Speed and the Track the boat is following.  
NOTE:  
Some data types can be displayed in only one font size. If that is the  
case, the Data Size box will not be displayed for that data type.  
Ping Speed & HyperScroll  
Ping Speed controls the rate at which the transmitter and transducer  
broadcast sonar sound waves — pings — into the water. The unit has a  
default ping speed of 50 percent. At normal boating speeds, this  
automatically provides enough return echoes to refresh the screen and  
scroll the chart at maximum chart speed.  
However, when you are running at high speeds, or just want the fastest  
possible screen update, you may want to use the HyperScrollfeature.  
When you change the Ping Speed to any setting greater than 50  
percent, the unit automatically enters HyperScroll mode.  
These faster ping rates allow you to maintain a high-detail picture on  
the screen, and the screen refresh rate and chart scroll speed can keep  
pace with the boat as it moves quickly over the bottom terrain.  
When using HyperScroll, you may also need to manually decrease the  
sensitivity for optimum performance. Depending on water depth and  
other conditions, HyperScroll may cause a second bottom echo to return  
to the transducer during the next ping cycle, or sounding. This can result  
in a large amount of clutter appearing on the screen. If this occurs, just  
decrease the sensitivity to a level that eliminates the clutter. When you  
turn HyperScroll off, you can return to your original sensitivity level.  
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Sonar Menu with Ping Speed command selected (left).  
The Ping Speed Control Bar (right) at default setting.  
To change Ping Speed:  
1. From the Sonar Page, press MENU|↓ to PING SPEED|ENT.  
2. The Ping Speed Control Bar appears. Press ↑ to increase ping speed;  
press ↓ to decrease ping speed. When it's set at the desired level, press EXIT.  
To turn off HyperScroll:  
1. From the Sonar Page, press MENU|↓ to PING SPEED|ENT.  
2. The Ping Speed Control Bar appears. Press ↓ to decrease ping speed  
to 50 percent. When it's set at the desired level, press EXIT.  
When you boost ping speed and switch into HyperScroll, the width of  
the FasTrack bar graph display doubles in width at the right side of the  
screen. This allows you to better see the virtually instantaneous sonar  
returns, just as you would on a flasher sonar unit. For more  
information on FasTrack, see it's entry in this section.  
Reset Options  
This command is used to reset all features, options and settings to their  
original factory defaults. This is useful when you have changed several  
settings and want to return the unit to basic automatic operation.  
1. Press MENU|MENU|↓ to SYSTEM SETUP|ENT|↓ to RESET OPTIONS|ENT.  
2. Press ← to YES|ENT.  
3. All the menus are cleared and the unit reverts to the Map Page at  
the 4000-mile zoom range, just as if you had turned it on for the first  
time. All options have been returned to the factory settings.  
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System Setup menu with Reset Options command selected (left). The  
Reset Options dialog box, with "Yes" selected (right).  
NOTE:  
Reset Options does not erase any waypoints, routes, plot trails, or  
sonar logs.  
Reset Water Distance  
The sonar chart's Digital Data display option includes a window that  
shows distance traveled, called Water Distance ("W Distance"). This  
information is calculated from an optional water speed sensor, not the  
GPS. The Water Distance window can be reset to zero using the Reset  
Water Distance command.  
Press MENU|MENU|↓ to SONAR SETUP|ENT|↓ to RESET WATER  
DISTANCE|ENT. The menus are cleared and the water distance is reset to  
0.00.  
Set Keel Offset  
This unit measures water depth from the face of the transducer. Since  
the transducer is installed below the water surface, the depth displayed  
by the digital depth, chart depth scale, chart cursor or fish symbols is  
not exact. If the transducer is 1 foot below the surface, and the screen  
shows the water depth as 30 feet, then the actual depth is 31 feet.  
On sailboats or other large vessels with deep drafts, the distance  
between the transducer installation and the keel or lower engine unit  
can be several feet. In those cases, an inexact depth reading could  
result in grounding or striking underwater structure. The Keel Offset  
feature eliminates the need for the navigator to mentally calculate how  
much water is under his keel.  
Keel Offset lets you calibrate the digital depth: chart depth scale, chart  
cursor depth and fish symbol depth displayed on the screen. To calibrate  
the depth indicators, first measure the distance from the face of the  
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transducer to the lowest part of the boat. In this example, we will use 3.5  
feet. This will entered as a negative 3.5 feet, which makes the depth  
indicators perform as if the transducer's lower in the water than it really  
is.  
1. Press MENU|MENU|↓ to SONAR SETUP|ENT.  
2. Use ↓ to scroll down to KEEL OFFSET, then press ENT. The Keel Offset  
dialog box appears. Press ↓ to change the plus (+) sign to a minus (–)  
sign.  
3. Press → to the first number, then press ↑ to change the number to 3  
4. Press → to the second number, then press ↑ to change the number to  
5, then press EXIT. The depth indicators now accurately show the water  
depth beneath the keel.  
NOTE:  
If knowing the exact depth of water beneath the keel is less  
important, you can calibrate the depth indicators so that they show  
the actual water depth from surface to bottom. To do this, first  
measure the distance from the face of the transducer to the surface  
(the water line on the boat). In this example, we will use 1.5 feet. This  
will be entered as a positive 1.5 feet, which makes the depth  
indicators perform as if the transducer's higher in the water than it  
really is.  
1. Press MENU|MENU|↓ to SONAR SETUP|ENT|ENT.  
2. The Keel Offset dialog box appears with a plus (+) sign at the  
front of the box.  
3. Press → to the first number, then press ↑ to change the number  
to 1.  
4. Press → to the second number, press ↑ to change the number to  
5, then press EXIT. The depth indicator now accurately shows the  
water depth from surface to bottom.  
Sensitivity & Auto Sensitivity  
The sensitivity controls the ability of the unit to pick up echoes.  
Sensitivity can be adjusted, because water conditions vary greatly. A  
low sensitivity level (from zero to 50 percent) excludes much of the  
bottom information, fish signals, and other target information.  
High sensitivity levels let you see this detail, but it can also clutter the  
screen with many undesired signals. Typically, the best sensitivity level  
shows a good solid bottom signal with some surface clutter.  
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Automatic Sensitivity  
The default sensitivity mode is automatic. The unit bases the  
sensitivity level on water depth and conditions. When the unit is in the  
automatic mode, sensitivity is automatically adjusted to keep a solid  
bottom signal displayed, plus a little more power. This gives it the  
capability to show fish and other detail.  
However, situations occur when it becomes necessary to increase or  
decrease the sensitivity. This typically happens when you wish to see  
more detail, so an increase in sensitivity is indicated. Or, wave action  
and boat wakes can create enough tiny air bubbles to clutter much of  
the water column. In that case, a decrease in sensitivity is indicated to  
reduce some of the clutter.  
The control bar used to adjust sensitivity up or down is the same  
whether the unit is in the automatic or manual mode. In automatic you  
can adjust sensitivity up to 100 percent but the unit will limit your  
minimum setting. In auto, the unit will continue to make small  
adjustments, allowing for the setting you selected.  
In manual mode, you have complete control over sensitivity, with the  
ability to set it anywhere from zero to 100 percent. Once you select a  
level in manual, the unit will continue to use that exact sensitivity  
setting until you change it or revert to auto mode.  
To adjust sensitivity in auto mode:  
1. Press MENU|ENT.  
2. The Sensitivity Control Bar appears. Press ↓ to decrease sensitivity;  
press ↑ to increase sensitivity. When it's set at the desired level, press  
EXIT. (When you reach the maximum or minimum limit, a tone sounds.)  
Sonar Menu with Sensitivity command selected (left).  
The Sensitivity Control Bar (right).  
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To adjust sensitivity in manual mode:  
1. First, turn off Auto Sensitivity: from the Sonar Page, press MENU|↓  
to AUTO SENSITIVITY|ENT.  
2. Press ↑ to SENSITIVITY|ENT and the Sensitivity Control Bar appears.  
Press ↓ or ↑ to pick a different sensitivity setting. When it's set at the  
desired level, press EXIT.  
To turn Auto Sensitivity back on:  
From the Sonar Page, press MENU|↓ to AUTO SENSITIVITY|ENT|EXIT.  
NOTE:  
To return to the original factory setting for Auto Sensitivity, see the  
entry in this section on Reset Options. If sensitivity is in manual  
mode, the Reset Options command will switch back to Auto and  
reset the factory setting at the same time.  
Tip:  
For quicker sensitivity adjustments, try leaving the Sensitivity  
Control Bar on the screen as the chart scrolls. You can see the  
changes on the screen as you press the up or down arrows. This is  
handy when there's a lot of clutter in the water, and you are  
matching the sensitivity to rapidly changing water conditions.  
Sonar Chart Mode  
The default color scheme for the sonar chart is white background, but  
we offer other variations to suit your viewing preferences. The chart  
can be displayed in grayscale, reverse grayscale, blue background,  
nightview, iceview or bottom color tracking.  
To change the chart mode:  
1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.  
2.. Press → ↓ to SONAR CHART MODE|ENT.  
3. Press ↓ or ↑ to Mode Name|ENT.  
4. Press EXIT|EXIT to return to the Sonar Page.  
Sonar Page & Sonar Chart Display Options  
The Pages Menu offers five chart display options for units with dual-  
frequency transducers and four options for units with single-frequency  
transducers. To access them, press PAGES|← or→ to SONAR|↓ to Option  
Name|EXIT.  
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Pages Menu, showing sonar chart display options.  
Full Sonar Chart  
This is the default mode used when the unit is turned on for the first  
time or when it's reset to the factory defaults.  
The bottom signal scrolls across the screen from right to left. Depth  
scales on the right side of the screen aid in determining the depth of  
targets. The line at the top of the screen represents the surface. The  
bottom depth and surface temperature (if equipped with a temperature  
sensor or a transducer with a temp sensor built in) show at the top left  
corner of the screen.  
The FasTrack™ display shows just to the right of the scale. This  
changes all echoes into short horizontal bars, replicating a flasher  
sonar. The zoom bar on the far right shows the area that's zoomed  
when the zoom is in use. (See the Zoom section on page 89 for more  
information.)  
Full Sonar Chart. The Overlay Data (depth and water temperature)  
are each set to a different text size.  
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Split Zoom Sonar Chart  
A split chart shows the underwater world from the surface to the  
bottom on the right side of the screen. The left side shows an enlarged  
version of the right side. The zoom range shows at the bottom left  
corner of the screen.  
Split Zoom Sonar Chart. Image (left) shows the left window zoomed  
to 2X. The image on the right shows the left window zoomed to 4X.  
Split Frequency Sonar Chart  
(Dual-Frequency Transducers only)  
This page option shows sonar data from the 50 kHz transducer element  
on the left side of the screen and data from the 200 kHz transducer on  
the right side. All other functions and features are the same as the Full  
Chart page.  
Split Frequency Sonar Chart page, with  
50 kHz view on the left and 200 kHz view on the right.  
You can adjust the sensitivity in each window.  
To adjust sensitivity in auto mode:  
1. Press MENU|ENT.  
2. The unit asks which you wish to adjust. Press ← or→ to select the  
one you want then press ENT.  
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3. The Sensitivity Control Bar appears. Press ↓ to decrease sensitivity;  
press ↑ to increase sensitivity. When it's set at the desired level, press  
EXIT. (When you reach the maximum or minimum limit, a tone sounds.)  
The Split Frequency Sonar Chart page allows you to adjust  
sensitivity separately for each window.  
Digital Data/Chart  
This mode shows the chart on the right side of the screen. The left side has  
four digital boxes containing, Depth, Track, Bearing and a Temperature  
Graph.  
Digital Data/Chart  
Customize Page Displays  
Every Page display option except Full Map (on the Map Page) has  
customizable Digital Data boxes to provide on-screen information.  
The various data available from your unit are divided into categories in  
the Data Viewer menu. These categories include GPS Data, Navigation,  
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Trip Calculator, Time, Sonar and Miscellaneous Data You can select  
items from any of these categories for display in any data box. The  
category divisions are only there to help you sort through the  
information.  
To change information displayed in a data box:  
On the page with the digital data box you wish to change, press  
MENU|↓ to CUSTOMIZE|ENT. A data box name flashes, indicating it is  
selected. Press ENT to modify the box or hit ↑ or ↓ to select another box,  
then press ENT. You'll see a list of categories with "+" or "–" symbols  
next to each category. A category with a "+" is expandable, meaning its  
contents are hidden.  
Data Viewer with the Sonar Data category expanded.  
Selecting the category name and pressing ENT will show the category's  
contents, so you can choose items within it. An expanded category (one  
with a "–" next to its name) can be collapsed to hide its contents. Just  
select the category name and press ENT.  
Expand any categories that might contain data you want to display.  
Then press ↓ or ↑ to select a different data option. With the new option  
highlighted, press ENT to switch the contents of the box to the new data  
type, then press EXIT. You can now select another box to change. When  
you are finished with the settings, press EXIT again and the box name  
stops flashing.  
NOTE  
A Page display can only show a limited number of data boxes.  
FlashGraf  
The FlashGraf sonar page option represents a flasher style sonar  
combined with a scrolling chart. A circular dial shows all returning  
echoes at a high screen refresh rate. It uses the Colorline feature to  
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show weaker targets as lighter colors. The bottom depth is shown as a  
black bar across the outer circle. You can adjust the size of the chart  
and the flasher windows by using the Resize Window command, which  
is described on page 105.  
Surface  
clutter  
Bottom signal  
Fish signal,  
approximately  
27 feet  
FlashGraf page.  
Map With Sonar Split Screen  
There is a page mode that splits the screen in half, with the map on the  
left and the sonar on the right. This screen option can be found on the  
Pages Menu under the Map Page category.  
Map with Sonar split screen.  
When this screen is activated, you need to specify which side of the Menu,  
is active. To toggle between the two windows, press PAGES|PAGES. The  
window with the blue title bar at the top of the screen is the active window.  
To switch back, just press PAGES|PAGES again.  
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Sonar Simulator  
This unit has a built-in simulator that lets you run it as if you were on  
the water. All sonar features and functions are useable. When in  
simulator mode, you will see the chart file name in the Sonar Page title  
bar and a play symbol will flash on and off at the right end of the title  
bar. To use the simulator:  
1. From the Sonar Page, press MENU|MENU|↓ to SONAR SETUP|ENT|↓ to  
SONAR SIMULATOR ENT|ENT.  
Main Menu with Sonar Setup command selected (left). Sonar  
Simulator menu, with simulator turned on (right).  
NOTE:  
With Simulate Position checked, the simulator will also  
automatically run the GPS simulator (if GPS data was recorded  
with the sonar log).  
2. To use the default sonar chart log stored in the unit, press ENT|EXIT.  
The recorded chart begins scrolling across the screen, just as if you  
were on the water.  
3. Turn off Sonar Simulator by pressing MENU|MENU|↓ to SONAR  
SETUP|ENT|↓ to SONAR SIMULATOR|ENT|ENT|EXIT.  
"Play"  
symbol  
flashing  
Title bar  
with chart  
file name  
Sonar Page, playing a recorded sonar chart in Sonar Simulator mode.  
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Tip:  
The Sonar Simulator can use sonar charts recorded (logged) on a  
MMC card. (To see how, read the entry in this section on Log Sonar  
Chart Data.) To play back a sonar chart, make sure the MMC  
containing the chart is installed, then:  
1. Press MENU|MENU|↓ to SONAR SETUP|ENT|↓ to SONAR SIMULATOR|ENT.  
2. Press ↓ to CHART USED|ENT.  
3. Press ↓ or ↑ to select chart name|ENT|↑ to SONAR SIMULATOR  
ON|ENT|EXIT.  
While you're in the Sonar Simulator menu, don't forget to check  
Simulate Position if you want to run the sonar and GPS simulators  
simultaneously. As you review sonar logs, you can create waypoints  
to mark sites you want to return to.  
While the simulator is running, you can switch from one chart log  
to another by opening the Sonar Simulator menu and using the  
instructions in step 2 to select a different chart.  
NOTE:  
If you turn on your unit before attaching a transducer, it may enter  
a demo mode. The words "demo mode" flash on the bottom of the  
screen and a sonar chart plays much like the simulator. Unlike the  
simulator, the demo mode is for demonstration only, and will  
automatically stop as soon as you turn on the unit with a  
transducer attached. The simulator will continue to function  
normally.  
Stop Chart  
If you are running multiple units on a boat or using this unit in a car,  
there are times when you may want to turn off the sonar. This  
command turns off the sonar and stops the chart from scrolling. Sonar  
restarts automatically each time you turn on your unit.  
Press MENU|↓ to STOP CHART|ENT|EXIT.  
To turn on sonar and start the chart scrolling again, repeat the above step.  
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Sonar Menu with Stop Chart command selected. The box is unchecked,  
indicating the chart is scrolling across the screen.  
Surface Clarity  
The markings extending downward from the zero line on the chart are  
called "surface clutter." These markings are caused by wave action,  
boat wakes, temperature inversion and more.  
The surface clarity control reduces or eliminates surface clutter signals  
from the display. It does this by changing the sensitivity of the receiver,  
decreasing it near the surface and gradually increasing it as the depth  
increases.  
There are three levels of surface clarity available: low, medium, or high.  
It can also be turned off. The default level is off.  
To adjust the Surface Clarity level:  
1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.  
Sonar Features menu with Surface Clarity selected.  
2. Press ↓ to SURFACE CLARITY|ENT.  
3. Press ↓ or ↑ to select clarity level|EXIT|EXIT|EXIT.  
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Surface clutter  
In the illustration on the left, Surface Clarity is turned off.  
The view on the right shows Surface Clarity set on high.  
Transparency  
Use the transparency menu to adjust the transparency of menu  
windows. A high transparency allows you to continue monitoring the  
screen's display while adjusting feature settings, though the text of the  
menus may fade until it is unreadable. A low transparency will usually  
make menu text easier to read, at the cost of watching your display.  
Experiment with this feature until you find the right level of  
transparency for your eyes.  
Main Menu with Transparency command selected.  
To adjust Menu Transparency level:  
Press MENU |MENU|↓ to TRANSPARENCY |ENT. The TRANSPARENCY slider bar  
appears. Press ↑ or ↓ to move the bar. The lower end of the scale makes  
the menus opaque; the upper end is maximum transparency.  
Upper and Lower Limits  
See the entry in this section for Depth Range - Upper and Lower Limits  
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Zoom & Zoom Bar  
"Zooming in" is a common, fast and easy method used to enlarge small  
detail, fish signals and the bottom with its associated structure. This  
unit lets you zoom in quickly and easily by pressing the Zoom In key,  
ZIN.  
Pressing ZIN once doubles the size (2X) of all echoes on the screen.  
Pressing it again quadruples the size of the echoes (4X). The zoom bar  
on the far right side of the screen shows which echoes will be displayed  
on the screen when the ZIN key is pressed.  
For example, pressing the ZIN key once will enable a 2X zoom that will  
show all echoes that are between the top and bottom of the 2X zoom  
bar. Pressing the key again will give a 4X zoom and only the echoes  
between the top and bottom of the 4X bar will show on the screen.  
Press the Zoom Out key, ZOUT, to return the display to the normal mode.  
Sonar page zoomed 2X (left). The same view zoomed 4X (right).  
Zoom Pan  
Your unit has the handy ability to quickly zoom in on any portion of the  
water column with just the touch of an arrow key. The Zoom Pan feature  
lets you rapidly move the zoomed area up and down to different depths.  
By "pointing" your zoom at different portions of the chart as it scrolls,  
you can get a good, close-up look at structure or cover below you.  
To use Zoom Pan, switch to a manual depth range setting (see page 65)  
and turn on 2X or 4X Zoom. Then, simply press ↑ or ↓ to pan up and  
down the water column.  
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Notes  
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Section 5:  
Sonar Troubleshooting  
If your unit is not working, or if you need technical help, please use the  
following troubleshooting section before contacting the factory customer  
service department. It may save you the trouble of returning your unit  
for repair. For contact information, refer to the last page, just inside the  
back cover of this manual.  
Unit won't turn on:  
1. Check the power cable's connection at the unit. Also check the wiring.  
2. Make certain the power cable is wired properly. The red wire  
connects to the positive battery terminal, black to negative or ground.  
3. Check the fuse.  
4. Measure the battery voltage at the unit's power connector. It should  
be at least 11 volts. If it isn't, the wiring to the unit is defective, the  
battery terminals or wiring on the terminals are corroded, or the  
battery needs charging.  
Unit operates only in demo mode:  
The transducer or antenna module have not yet been connected or have  
been disconnected. To leave demo mode, make sure that either the  
transducer or the antenna is securely connected before turning the unit on.  
Unit freezes, locks up, or operates erratically:  
1. Electrical noise from the boat's motor, trolling motor, or an accessory  
may be interfering with the sonar unit. Rerouting the power and  
transducer cables away from other electrical wiring on the boat may  
help. Route the sonar unit's power cable directly to the battery instead  
of through a fuse block or ignition switch  
2. Inspect the transducer cable for breaks, cuts, or pinched wires.  
3. Check both the transducer and power connectors. Make certain both  
are securely plugged in to the unit.  
Weak bottom echo, digital readings erratic, or no fish signals:  
1. Make certain the transducer is pointing straight down. Clean the  
face of the transducer. Oil, dirt and fuel can cause a film to form on the  
transducer, reducing its effectiveness. If the transducer is mounted  
inside the hull, be sure it is shooting through only one layer of  
fiberglass and that it is securely bonded to the hull. Do NOT use RTV  
silicone rubber adhesive or Marine-Texepoxy.  
2. Electrical noise from the boat's motor can interfere with the sonar.  
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This causes the sonar to automatically increase its Discrimination or  
noise rejection feature. This can cause the unit to eliminate weaker  
signals such as fish or even structure from the display.  
3. The water may be deeper than the sonar's ability to find the bottom.  
If the sonar can't find the bottom signal while it's in the automatic  
mode, the digital sonar display will flash continuously. It may change  
the range to limits far greater than the water you are in. If this  
happens, place the unit in the manual mode, then change the range to a  
realistic one, (for example, 0-100 feet) and increase the sensitivity. As  
you move into shallower water, a bottom signal should appear.  
4. Check the battery voltage. If the voltage drops, the unit's transmitter  
power also drops, reducing its ability to find the bottom or targets.  
Bottom echo disappears at high speeds or erratic digital  
reading or weak bottom echo while boat is moving  
1. The transducer may be in turbulent water. It must be mounted in a  
smooth flow of water in order for the sonar to work at all boat speeds. Air  
bubbles in the water disrupt the sonar signals, interfering with its ability  
to find the bottom or other targets. The technical term for this is  
cavitation.  
2. Electrical noise from the boat's motor can interfere with the sonar.  
This causes the sonar to automatically increase its Discrimination or  
noise rejection feature. This can cause the unit to eliminate weaker  
signals such as fish or even structure from the display. Try using  
resistor spark plugs or routing the sonar unit's power and transducer  
cables away from other electrical wiring on the boat.  
No fish arches when the Fish I.D. feature is off:  
1. Make certain the transducer is pointing straight down. This is the  
most common problem if a partial arch is displayed.  
2. The sensitivity may not be high enough. In order for the unit to  
display a fish arch, it has to be able to receive the fish's echo from the  
time it enters the cone until it leaves. If the sensitivity is not high  
enough, the unit shows the fish only when it is in the center of the cone.  
3. Use the Zoom feature. It is much easier to display fish arches when  
zoomed in on a small range of water than a large one. For example, you  
will have much better luck seeing fish arches with a 30 to 60 foot range  
than a 0 to 60 foot range. This enlarges the targets, allowing the  
display to show much more detail.  
4. The boat must be moving at a slow trolling speed to see fish arches.  
If the boat is motionless, fish stay in the cone, showing on the screen as  
straight horizontal lines.  
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NOISE  
A major cause of sonar problems is electrical noise. This usually  
appears on the sonar's display as random patterns of dots or lines. In  
severe cases, it can completely cover the screen with black dots, or  
cause the unit to operate erratically, or not at all.  
To eliminate or minimize the effects of electrical noise, first try to  
determine the cause. With the boat at rest in the water, the first thing  
you should do is turn all electrical equipment on the boat off. Make sure  
the engine is also off. Turn your sonar on, then turn off Noise Reject  
[also known as the ASP feature (Advanced Signal Processing)].  
Sensitivity should be set at 90-95 percent. There should be a steady  
bottom signal on the display. Now turn on each piece of electrical  
equipment on the boat and view the effect on the sonar's display. For  
example, turn on the bilge pump and view the sonar display for noise. If  
no noise is present, turn the pump off, then turn on the VHF radio and  
transmit. Keep doing this until all electrical equipment has been  
turned on, their effect on the sonar display noted, then turned off.  
If you find noise interference from an electrical instrument, trolling  
motor, pump, or radio, try to isolate the problem. You can usually  
reroute the sonar unit's power cable and transducer cable away from  
the wiring that is causing the interference. VHF radio antenna cables  
radiate noise when transmitting, so be certain to keep the sonar's wires  
away from it. You may need to route the sonar unit's power cable  
directly to the battery to isolate it from other wiring on the boat.  
If no noise displays on the sonar unit from electrical equipment, then  
make certain everything except the sonar unit is turned off, then start  
the engine. Increase the RPM with the gearshift in neutral. If noise  
appears on the display, the problem could be one of three things; spark  
plugs, alternator, or tachometer wiring. Try using resistor spark plugs,  
alternator filters, or routing the sonar unit's power cable away from  
engine wiring. Again, routing the power cable directly to the battery  
helps eliminate noise problems. Make certain to use the in-line fuse  
supplied with the unit when wiring the power cable to the battery.  
When no noise appears on the sonar unit after all of the above tests,  
then the noise source is probably cavitation. Many novices or persons  
with limited experience make hasty sonar installations which function  
perfectly in shallow water, or when the boat is at rest. In nearly all  
cases, the cause of the malfunction will be the location and/or angle of  
the transducer. The face of the transducer must be placed in a location  
that has a smooth flow of water at all boat speeds. Read your  
transducer owner's manual for the best mounting position.  
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Notes  
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Section 6:  
Basic GPS Operations  
This section addresses the unit's most basic GPS operations. The  
tutorials presented in Sec. 6 follow a chronological order. Sec. 7,  
Advanced GPS Operations, will discuss other more advanced functions  
and utilities. Material in Sec. 7 is arranged in alphabetical order.  
Before you turn on the unit and find where you are, it's a good idea to  
learn about the different keys, the four Page screens and how they all  
work together. BUT, if you just can't wait to get outside, turn to the  
one-page Quick Reference on page 107.  
Keyboard  
4
8
9
7
6
1
2
3
5
MMC drawer  
LCX-20C sonar/GPS unit, front view, showing sonar screen, keyboard  
and access door for the MMC compartment.  
1. PWR/LIGHT (Power & Light) – The PWR key turns the unit on and  
off and activates the backlight.  
2. PAGES – Pressing this and the ← → arrow keys (4) switches the  
unit between the four different page screens. (Satellite Status Page,  
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Navigation Page, Map Page and Sonar Page.) Each page represents one  
of the unit's major operation modes.  
3. MENU – Press this key to show the menus and submenus, which  
allow you to select a command or adjust a feature. This also accesses  
search functions for streets, intersections, addresses and highway exits.  
4. ARROW KEYS – These keys are used to navigate through the  
menus, make menu selections, move the map cursor and sonar chart  
cursor and enter data.  
5. ENT/ICONS (Enter & Icons) – This key allows you to save data,  
accept values or execute menu commands. It is also used to create  
event marker icons.  
6. EXIT – The Exit key lets you return to the previous screen, clear  
data or close a menu.  
7. WPT – (Waypoint) The Waypoint key is used to save and recall  
waypoints, search for waypoints and access the waypoint list. It also  
launches the Point-of-Interest (POI) search menus and is involved in  
some navigation functions.  
8. ZOUT – (Zoom Out) – This key lets you zoom the screen out. On the  
Sonar Page, this key returns you to a full sonar chart display, showing  
the entire water column from surface to bottom. On the Map Page, this  
lets you see a larger geographic area on the map. Less detail is seen as  
you zoom out.  
9. ZIN – (Zoom In) – This key lets you zoom the screen in. On the Sonar  
Page, this key enlarges fish signals and bottom detail. On the Map  
Page, zooming in lets you see greater detail in a smaller geographic  
area on the map.  
Power/lights on and off  
To turn on the unit, press PWR. As the unit powers up, the Map Page is  
displayed first. (To switch to another page, press PAGES|← or → to  
Page Name|EXIT.)  
To turn on the backlight, press PWR again. The unit has three backlight  
levels to select from. Repeatedly pressing PWR will cycle through the  
backlight settings and turn off the backlight.  
Turn off the unit by pressing and holding the PWR key for 3 seconds.  
Main Menu  
The Unit has a Main Menu, which contains some function commands  
and some setup option commands. The tutorial lessons in this section  
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will deal only with functions and basic commands that make the Unit  
do something. The unit will work fine for these lessons right out of the  
box with the factory default settings. But, if you want to learn about  
the various options, see Sec. 8, System Setup and GPS Setup Options.  
You can access the Main Menu from any of the four Page screens by  
pressing MENU|MENU. To clear the menu screen and return to the page  
display, press EXIT.  
Main Menu.  
The Main Menu commands and their functions are:  
Screen command: changes the contrast or brightness of the display  
screen.  
Sounds command: enables or disables the sounds for key strokes and  
alarms and sets the alarm style.  
Transparency command: adjusts the level of transparency for menus.  
Alarms command: turns GPS or sonar alarms on or off and changes  
alarm thresholds.  
Route Planning command: used to plan, view or navigate a route.  
My Trails command: shows, hides, creates and deletes plot trails. Also  
used to navigate or backtrack a trail.  
Cancel Navigation command: turns off the various navigation  
commands. Used to stop navigating after you have reached your  
destination waypoint, Point of Interest or map cursor location; or after  
you reach the end of a route or trail.  
Sonar Setup command: sets various sonar options.  
GPS Setup command: sets various GPS receiver options.  
System Setup command: sets general configuration options.  
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Sun/Moon Calculations command: finds the rising and setting time  
of the sun and the moon.  
Trip Calculator command: shows trip status and statistics.  
Timers command: controls the up timer, down timer and alarm clock  
settings.  
Browse MMC Files command: this allows you to view the installed  
MMC card and the files it contains.  
Pages  
The unit has four Page displays that represent the four major operating  
modes. They are the Satellite Status Page, the Navigation Page, Map  
Page and the Sonar Page. They are accessed by pressing the PAGES key,  
then using → or ← to select a Page. (Clear the menu by pressing EXIT.)  
Pages Menu, showing some Map display options.  
Sonar Page  
The Sonar Page displays the sonar chart, a view of the water column  
from the surface to the bottom. The chart scrolls across the screen from  
right to left, displaying signal echoes that represent fish, structure and  
the bottom. The Sonar Page is discussed in detail in Sec. 3. To get to  
the Sonar Page: Press the PAGES key, then use → or ← to select SONAR.  
(Clear the Pages Menu by pressing EXIT.)  
Satellite Status Page  
The Satellite Status Page, shown, provides detailed information on the  
status of the unit's satellite lock-on and position acquisition. To get to  
the Satellite Status Page: Press the PAGES key, then use → or ← to  
select STATUS. (Clear the Pages Menu by pressing EXIT.)  
No matter what Page you are on, a flashing current position  
indicator/question mark symbol and flashing GPS data displays  
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indicate that satellite lock has been lost and there is no position  
confirmed. The Satellite Status Page shows you the quality and  
accuracy of the current satellite lock-on and position calculation.  
WARNING:  
Do not begin navigating with this unit until the numbers  
have stopped flashing!  
The Satellite Status Page.  
This screen shows a graphical illustration of the satellites that are in view.  
Each satellite is shown on the circular chart relative to your position. The  
point in the center of the chart is directly overhead. The small inner ring  
represents 45° above the horizon and the large ring represents the horizon.  
North is at the top of the screen. You can use this to see which satellites are  
obstructed by obstacles in your immediate area if the unit is facing north.  
The GPS receiver is tracking satellites that are in light blue. The  
receiver hasn't locked onto a satellite if the number is dark blue,  
therefore it isn't being used to solve the position.  
Beneath the circular graph are the bar graphs, one for each satellite in  
view. Since the unit has twelve channels, it can dedicate one channel  
per visible satellite. The taller the bar on the graph, the better the unit  
is receiving the signals from the satellite.  
The "Estimated Position Error" (horizontal position error) shown in the  
upper left corner of the screen is the expected error from a benchmark  
location. In other words, if the EPE shows 50 feet, then the position  
shown by the unit is estimated to be within 50 feet of the actual  
location. This also gives you an indicator of the fix quality the unit  
currently has. The smaller the position error number, the better (and  
more accurate) the fix is. If the position error flashes dashes, then the  
unit hasn't locked onto the satellites, and the number shown isn't valid.  
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The Satellite Status Page has its own menu, which is used for setting  
various options. (Options and setup are discussed in Sec. 8.) To access  
the Satellite Status Page Menu, from the Status Page, press MENU  
Navigation Page  
This screen has a compass rose that not only shows your direction of  
travel, but also the direction to a recalled waypoint. It also has a  
Navigation with Sonar option that will display two windows, one with a  
sonar chart, the other with the compass rose. To get to the Navigation  
Page: Press PAGES| → or ← to NAVIGATION|EXIT.  
Track or compass heading indicator, showing direction of travel  
Compass  
rose  
Cross track  
error range  
Present  
position  
arrow  
Navigation  
information  
displays  
The Navigation Page.  
NOTE:  
Remember, when information displays are flashing, satellite lock  
has not been achieved and no position fix has been determined. A  
question mark will also flash on the present position arrow in the  
center of the compass rose.  
Speed (ground speed) is the velocity you are making over the ground. (If  
you wish, you can customize the Speed window to display Closing  
Speed instead. Closing Speed is also known as velocity made good. It's  
the speed that you're making toward the waypoint. For instructions,  
see the Customize Page Displays entry in Sec. 8.)  
Track is the heading, or the current direction you are actually  
traveling. Bearing is the direction of a line-of-sight from your present  
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position to the destination. No matter what direction you are steering,  
the Bearing window shows the compass direction straight to the  
destination from your location at the moment. Distance shows how far  
it is to the waypoint you're navigating toward.  
The Off Course window shows the current cross track error. This shows  
the distance you are off-course to the side of the desired course line. The  
course line is an imaginary line drawn from your position when you  
started navigating to the destination waypoint. The course line is shown  
on the Navigation Page screen (and the Map Page screen) as a red line.  
The cross track error range is shown on the compass rose as a wide,  
white, corridor enclosing the course line. The outer edges of this white  
corridor represent lines that show the current cross track error range.  
The default for the cross track error range is 0.20 miles.  
For example, if the present position symbol touches the right cross  
track error line, then you are 0.20 miles to the right of the desired  
course. You need to steer left to return to the desired course. You can  
use the ZIN or ZOUT keys to change the cross track error range.  
A circular symbol depicting your destination (waypoint) appears on the  
screen as you approach the waypoint, as shown on the screen in the  
following figure.  
Trip Time is the time that it will take to reach your destination at your  
present closing speed. (You can also customize the time window to show  
Arrival Time instead. Arrival Time is the local time it will be when you  
arrive at the destination, based upon your present closing speed and  
track.)  
The Navigation Page has its own menu, which is used for some  
advanced functions and for setting various options. (Options and setup  
are discussed in Sec. 8.) To access the Navigation Page Menu, from the  
Navigation Page, press MENU.  
Map Page  
The Map Page screens show your course and track from a "bird's-eye"  
view. By default, this unit shows the map with north always at the top  
of the screen. (This can be changed. See the topic Map Orientation, in  
Sec. 8.) If you're navigating to a waypoint, the map also shows your  
starting location, present position, course line and destination. You,  
however, don't have to navigate to a waypoint to use the map.  
Map Page is the default screen that appears when you turn on the unit.  
To get to the Map Page from another page: Press PAGES| → or ← to  
MAP|EXIT. When the Map Page is displayed, a screen similar to the  
following figure appears.  
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The arrow in the center of the screen is your present position. It points  
in the direction you're traveling. The map zoom range is the distance  
across the screen. This number shows in the lower right corner. In the  
example below, the range is 15 miles from the left edge of the map to  
the right edge of the map.  
The Zoom In and Zoom Out keys zoom the map to enlarge or reduce its  
coverage area and the amount of mapping detail shown. There are 37  
available map zoom ranges, from 0.05 miles to 4,000 miles.  
The map is zoomed to 15 miles. The Over Zoomed notice in the top left  
corner means you have reached the map’s detail limits for the area.  
Zooming in any closer will reveal no more map details because a  
custom map has not been loaded on the MMC.  
If you're using only the factory-loaded background map, the maximum  
zoom range is 20 miles. You can continue to zoom in closer, but the map  
will simply be enlarged without revealing more map content (except for  
a few major city streets.) Load your own high-detail custom map made  
with MapCreate, and you can zoom in to 0.05 miles.  
Map Pages with high-detail MapCreate map. Arterial streets appear at  
the 6 mile zoom range, with a few Point of Interest icons visible (left).  
Numerous Points of Interest dots become visible at the 3 mile range,  
along with minor streets (center). At the 0.6 mile zoom, you can see an  
interstate highway with an exit, major and minor streets as well as  
Point of Interest icons (right).  
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Background map vs. MapCreate map content  
The background map includes: low-detail maps of the whole world  
(containing cities, major lakes, major rivers, political boundaries); and  
medium-detail maps of the United States.  
The medium-detail U.S. maps contain: all incorporated cities; shaded  
metropolitan areas; county boundaries; shaded public lands (such as  
national forests and parks); some major city streets; Interstate, U.S.  
and state highways; Interstate highway exits and exit services  
information; large- and medium-sized lakes and streams; and more  
than 60,000 navigation aids with 10,000 wrecks and obstructions in  
U.S. coastal and Great Lakes waters  
MapCreate custom maps include massive amounts of information not  
found in the background map. MapCreate contains: Points of Interest  
database, all the minor roads and streets, all the landmark features  
(such as summits, schools, radio towers, etc.); more rivers, streams,  
smaller lakes and ponds and their names.  
What's more important is the large scale map detail that allows your  
GPS unit to show a higher level of position accuracy. For example, the  
background map would show you the general outline and approximate  
shape of a coastline or water body, but the higher detail in MapCreate  
shows the shoreline completely and accurately. Many smaller islands  
would not be included in the background map, but are in MapCreate.  
Interstate  
Major Street  
Cursor line  
POI Pop-up,  
with position,  
distance and  
bearing data  
Minor  
Streets  
POI  
Marker  
School POI  
Restaurant  
POI  
Zoom Range  
When the map is zoomed out far enough, most POIs appear as square  
dots. As you zoom in closer, the symbols become readable icons. In the  
0.6 mile zoom example (right), the cursor has selected the Cupps Café  
POI, which triggers a pop-up box with the POI name. This pop-up box  
works on POIs at any zoom range.  
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Tip:  
In some urban areas, businesses are so close to one another that  
their POI icons crowd each other on the screen. In the preceding  
figure, you can see a jumbled pile of POIs along Highway 34. You  
can reduce screen clutter and make streets and other map features  
easier to see by turning off the display of POIs you're not watching  
for. (To see how, check the text on Map Detail Category Selection,  
page 148.)  
The Map Page has its own menu, which is used for several functions  
and for setting various options. To access the Map Page Menu, from the  
Map Page, press MENU.  
The Pages Menu also offers several map display options under the Map  
Page category. To access them, press PAGES|← or→ to MAP|↓ to  
Option|EXIT.  
Digital Data map page (left); Two Position Formats page (right).  
Pages Menu with Two Maps option selected (left).  
Map Page with two map windows (right). The left map is active.  
In pages that have two major windows (such as two maps) you can toggle  
back and forth between the two windows by pressing PAGES|PAGES.  
This allows you to change which map the cursor, keyboard and menus  
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operate on. A dark blue title bar denotes the active window.  
Resize Window is another handy feature for pages that have two major  
windows. You can change the horizontal size of the windows to suit  
your viewing preference. Here's how:  
1. From any two-window display, press MENU|↓ to RESIZE WINDOW|ENT.  
2. Two flashing arrows appear along the centerline dividing the two  
windows. Press ← or → to adjust the window widths. Press EXIT to  
clear the menu. When you are using the Two Maps page, four flashing  
arrows appear, which allow you to not only resize the window from side  
to side, but also gives you the option of stacking the windows, one on  
top of the other.  
The Two Maps page with one window stacked on top of the other.  
3. To change the window size again or revert back to the original  
display, just follow the steps above. (Most dual-window displays use  
half the screen for each window by default.) You can also use the Reset  
Options command to revert to the factory default.  
Map Menu with Resize Window command selected (left). Pressing →  
moves the centerline and enlarges the left window (right).  
The following page contains a 12-step quick reference for the most basic  
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GPS operations. If you don't want to carry the manual with you as you  
practice with the Unit, you might consider photocopying this quick  
reference page and tucking it into your pocket.  
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GPS Quick Reference  
Start outdoors, with a clear view of the open sky. As you practice, try  
navigating to a location at least a few blocks away. While you're learning,  
navigation in too small an area will constantly trigger arrival alarms.  
1. Connect the unit to electric power and the antenna module. Make sure  
the MMC is in. (See complete installation details beginning on page 13.)  
2. To turn on the unit, press and release PWR key.  
3. Opening screen displays map of North America at the 4,000-mile  
zoom range. Rotate through the four main Page screens (Map Page,  
Satellite Status Page, Navigation Page and Sonar Page) by pressing  
PAGES|← or → to select Page Name|EXIT. Switch Pages to display  
Satellite Status Page.  
4. Wait while unit locates satellites and calculates current position. Process  
is visible on Satellite Page. This takes an average of 1 minute or less under  
sky conditions unobstructed by terrain or structures. When the unit  
acquires position, a tone sounds and a position acquired message appears.  
5. With position acquired, press the PAGES key to display the Map  
Page, which shows a bird's eye view of the earth. You can move around  
the map by:  
Zoom in closer to see greater detail: press ZIN (zoom in key.)  
Zoom out to see more area, less detail: press ZOUT (zoom out key.)  
Scroll map north, south, east or west using arrow keys ↑ ↓ → ← .  
To stop scrolling and return to current position on map, press EXIT key.  
6. Set a waypoint (Wpt 001) at your current position so you can  
navigate back here: press WPT|WPT. Waypoint symbol and "001"  
appears.  
7. Zoom/scroll map to find a nearby object or location to go to. Use  
arrow keys to center cursor cross-hair over the map object or location.  
8. Navigate to the selected destination: press MENU|ENT. Follow the red  
course line on Map Page or compass bearing arrow on Navigation Page.  
9. At destination, Arrival Alarm goes off; to clear it, press EXIT. Cancel  
navigation: press MENU|MENU|↓ to CANCEL NAVIGATION|ENT|← to YES|ENT.  
10. Return to Wpt 1 by Navigate To Waypoint or Backtrack Trail. To  
Waypoint: press WPT|→ to SAVED|ENT|ENT|ENT. Use ↑ or ↓ to select  
Wpt 001, press ENT|ENT; follow navigation displays. Trail: press  
MENU|MENU|↓ to MY TRAILS|ENT. Press ↓ to Trail 1|ENT|→|↓ to  
NAVIGATE|ENT|↓ to NAVIGATE|→ to REVERSE|ENT|← to NAVIGATE|ENT. (If  
arrival alarm sounds, press EXIT.) Follow navigation displays.  
11. Back home, Arrival Alarm goes off; press EXIT. Cancel navigation:  
press MENU|MENU|↓ to CANCEL NAVIGATION|ENT|← to YES|ENT.  
12. To turn off the unit, press and hold PWR key for three seconds.  
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Find Your Current Position  
Finding your current position is as simple as turning the unit on.  
Under an unobstructed sky, the unit automatically searches for  
satellites and calculates its position in approximately one minute or  
less.  
If for some reason satellite acquisition takes longer, you may be inside  
a structure or vehicle or in terrain that is blocking signal reception. To  
correct this, be sure you are positioned so the unit's antenna module  
has as clear a view of the sky as possible, then turn the unit off and  
back on again.  
Moving Around the Map: Zoom & Cursor Arrow Keys  
The map is presented from a bird's eye view. The current zoom range  
shows in the lower right corner of the screen.  
1. Press the ZIN key (zoom in) to move in closer and see greater detail in a  
smaller geographic area.  
2. Press the ZOUT key (zoom out) to move farther away and see less map  
detail, but a larger geographic area.  
When you are traveling, the map will automatically move as you move.  
This keeps your current location roughly centered on the screen.  
You can manually pan or scroll the map northward, southward,  
eastward or westward by using the arrow keys, which launch the cross-  
hair map cursor. This allows you to look at map places other than your  
current position. To clear the cursor, press EXIT, which switches the  
map back to the current position or the last known position.  
Tip:  
Use the cursor to determine the distance from your current position  
to any map object. Simply use the arrow keys to position the cursor  
over the object or landmark. The distance, measured in a straight  
line, appears in the pop-up box. Press EXIT to clear the cursor.  
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POI pop-up  
name box  
Cursor line  
Distance  
measured  
by cursor  
Selected  
airport  
Cursor line  
The selected airport to the northwest is 4.25 miles away.  
Selecting Any Map Item With the Cursor  
1. Use the zoom keys and the arrow keys to move around the map and  
find the item you wish to select.  
2. Use the arrow keys and center the cursor cross-hair on the desired  
object. On most items, a pop-up box will give the name of the selected  
item.  
Searching  
Now that you've seen how the unit can find where you are, let's search  
for something somewhere else. Searching is one of the most powerful  
features in the Lowrance GPS product line.  
In this example, we'll look for the nearest fast-food restaurant. For more  
information on different types of searches, refer to Sec. 9, Searching.  
NOTE:  
This example requires the Point of Interest (POI) database included  
with a high detail MapCreate 6 custom map.  
After the unit has acquired a position:  
1. Press WPT|↓ to POI-RESTAURANTS.  
2. You could search the entire restaurant category, but in this example  
we will narrow our search. Press → to SUBCATEGORY column|↓ to FAST  
FOOD CHAINS|ENT| ↓ to NEAREST|ENT.  
3. The unit says it is calculating, then a list of restaurants appears,  
with the closest at the top of the list, and the farthest at the bottom of  
the list. The nearest is highlighted.  
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Category Selection menu (left) and list of the nearest restaurants (right).  
4. You could scroll ↑ or ↓ to select another restaurant, but for now we will just  
accept the nearest one. Press ENT.  
5. The POI information screen appears. This is how you can use the unit as a  
business phone directory! If you wanted to navigate there, you could press ENT,  
since the GO TO WAYPOINT command is highlighted. But we just want to see it on  
the map, so press ↓ to FIND ON MAP |ENT.  
POI information screen on the nearest fast food restaurant, showing  
name, street address, phone number, latitude/longitude distance and  
compass bearing. The Go To command is selected (left). The figure on  
the right has the Find On Map command highlighted.  
6. The unit's map appears, with the cross-hair cursor highlighting the  
restaurant's POI symbol. A pop-up name box identifies the POI, as well  
as its distance and bearing. A data box at the bottom of the screen  
continues to display the location's latitude and longitude.  
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Map screen showing the result of a restaurant search.  
7. To clear the search and return to the last page displayed, press  
EXIT|EXIT. (Before you completely exited out of the Search menus, you  
could have gone looking for another place.)  
NOTE:  
Search works from mapping and POI data loaded in the unit. If you  
have not loaded a MMC for the area you are searching you may not  
find anything.  
Set a Waypoint  
A waypoint is simply an electronic "address," based on the latitude and  
longitude of a position on the earth. A waypoint represents a location,  
spot or destination that can be stored in memory, then recalled and  
used later for navigation purposes.  
You can create a waypoint at the cursor position on the map or at your  
current position, while you are navigating. You can create a waypoint  
at any location by manually entering the position's latitude and  
longitude. It is also possible to copy waypoints from your unit to your  
personal computer with MapCreate software. When you want to repeat  
a trip, these archived waypoints can be reloaded into your GPS unit.  
To create and save a Waypoint  
These first two techniques use the Quick Save method, the fastest and  
easiest way to create a waypoint.  
Create Waypoint at Current Position  
While you are traveling, press WPT|WPT. The waypoint is saved and  
automatically given a name with a sequential number, such as  
"waypoint 003." The waypoint symbol and number appear on the map.  
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Fig 1.  
Fig 2.  
Fig 4.  
Fig 3.  
Sequence for setting a waypoint. Fig. 1: while traveling, press WPT  
twice to call up the Find Waypoint screen (Fig. 2) and set a point. Fig.  
3: a message says the waypoint has been saved. Fig. 4: vehicle  
continues on its way; the waypoint number is visible on map.  
NOTE:  
The Quick Save method uses the default waypoint symbol until you  
edit an existing waypoint and change its symbol. (Edit Waypoint  
Symbol is described in Sec. 7.) After you have changed a waypoint  
symbol, the unit will remember the one you chose and use it the  
next time you "quick save" a waypoint. To revert back to the default  
symbol, edit a waypoint and choose it, or use the Reset Options  
command (described in Sec. 8).  
Create Waypoint on Map  
1. Use the arrow keys to move the cursor to the place where you want  
to make a waypoint.  
2. Press WPT|WPT. The waypoint is saved and automatically given a  
name with a sequential number, such as "waypoint 001." The waypoint  
symbol and number appear on the map.  
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Create Waypoint by Entering a Position  
1. Press WPT|→ to SUBCATEGORY column|↓ to NEW|ENT.  
2. Press ↓ to ENTERED POSITION|ENT|→ to CREATE|ENT.  
3. Press → to LATITUDE|ENT. Enter the latitude by pressing ↑ or ↓ to  
change the first character, then press → to the next character and  
repeat until the latitude is correct. Press ENT.  
4. Press ↓ to LONGITUDE|ENT. Enter the longitude by pressing ↑ or ↓ to  
change the first character, then press → to the next character and repeat  
until the longitude is correct. Press ENT, then EXIT|EXIT to return to the  
previous page display. The waypoint is saved and automatically given a  
name with a sequential number, such as "waypoint 001." The waypoint  
symbol and number appear on the map and in the waypoint list.  
Navigate To a Waypoint  
You can select any waypoint visible on the Map Page with the cursor,  
then use the Navigate to Cursor command, which will be covered later  
in this section. You can avoid scrolling the map to pick your waypoint if  
you use the Find Waypoint commands:  
1. Press WPT|→ to SAVED|ENT. To look up the nearest waypoint, press  
↓ to NEAREST|ENT; or, to look by name and scroll through the entire  
waypoint list, just press ENT. For this example, we’ll look by name.  
2. If your waypoint list is a long one, you can spell out the waypoint  
name in the FIND BY NAME box. Press ↑ or ↓ to change the first character,  
then press → to move the cursor to the next character and repeat until  
the name is correct, then press ENT to jump to the list below.  
3. If the list is short, you can jump directly to the FIND IN LIST box by  
pressing ENT. Use ↑ or ↓ to select the waypoint name, press ENT and  
the waypoint information screen appears with the GO TO command  
selected.  
4. To begin navigating to the waypoint, press ENT.  
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Waypoint  
Trail line  
Course line  
(red)  
Off course  
range, set  
at 0.20 mile  
Waypoint  
name  
Navigation Page, navigating toward waypoint 003.  
Set Man Overboard (MOB) Waypoint  
One of boating's most terrifying events is having a friend or family  
member fall overboard. It's particularly dangerous at night or if you're  
out of sight of land. Of course, the first thing to do is remain calm and  
then use all standard safety procedures to rescue the person.  
This unit has a man overboard feature that shows navigation data to  
the location where the feature was activated. To activate it, press the  
ZOUT and ZIN keys at the same time. Your position at the time these  
keys are pressed is used as the man overboard position.  
Caution:  
Saving a new "Man Overboard" waypoint will erase the previous  
"Man Overboard" waypoint.  
Navigate Back to MOB Waypoint  
Find your way back to the accident position with the Navigation Page  
or Map Page. When MOB is activated, the Navigation Page  
automatically shows the compass rose with its bearing arrow pointing  
toward the man overboard position, and the destination name says  
"Going To Man Overboard." The Map Page displays a Man Overboard  
waypoint, represented by a human figure, and the steering arrow  
points where to steer to reach that position.  
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The cursor is redirected toward the Man Overboard position on the  
Map Page. The victim is astern of the vessel. The GPS shows which  
direction to steer to for the rescue.  
The man overboard position is also stored in the waypoint list for future  
reference. It can be edited the same as any other waypoint.  
To cancel navigation to MOB, press MENU|MENU|↓ to CANCEL  
NAVIGATION|ENT|← to YES|ENT. The unit stops showing navigation  
information.  
Navigate to Cursor Position on Map  
The GO TO CURSOR command navigates to the current cursor position on  
the map. It's a quick and handy way to navigate to anything you can  
see on the map display.  
1. Use the cursor (controlled by the arrow keys) with the zoom in and  
zoom out keys to maneuver around the map until you find a location  
you want to go to.  
2. Center the cursor over the location to select it. See the example in  
the following figure. Many map items such as waypoints, Points of  
Interest, towns, etc. can be "selected," and appear "highlighted" with a  
pop-up box. Other features, such as a river or a street intersection will  
not appear "highlighted," but the cursor will take you to those locations  
just the same.  
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Navigate to cursor. In this example, the town of Oologah, Oklahoma  
has been selected.  
3. Press MENU|ENT and the unit will begin navigating to the cursor  
location.  
The Map Page will display a red line from your current position to the  
cursor position. The Navigation Page displays a compass rose showing  
navigation information to your destination. See the following examples.  
The 30-mile zoom figure (left) clearly shows the red course line  
connecting your current position to your destination. The 30-mile zoom  
(right) shows current position and direction to destination on screen.  
To stop navigating to the cursor, use the Cancel Navigation command:  
press MENU|MENU|↓ to CANCEL NAVIGATION|ENT|← to YES|ENT. The unit  
stops showing navigation information.  
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Navigate to a Point of Interest  
POIs in view on the map can be located easily by using the Navigate to  
Cursor command above. Just use the cursor to select the POI.  
The other method involves searching for POIs with the Find Waypoint  
command, launched with the WPT key. (See the searching example  
earlier in this section or turn to Sec. 9, Searching, for detailed  
instructions on POI searches.)  
After you have looked up an item with the Find Waypoint command,  
use the → to make sure the GO TO command is highlighted at the top of  
the screen, then press ENT. The unit begins navigating to the item.  
To cancel navigation, press MENU|MENU|↓ to CANCEL NAVIGATION|ENT|←  
to YES|ENT. The unit stops showing navigation information.  
Creating and Saving a Trail  
A trail, or plot trail, is a string of position points plotted by the unit as  
you travel. It's a travel history, a record of the path you have taken.  
Trails are useful for repeating a journey along the same track. They are  
particularly handy when you are trying to retrace your trip and go back  
the way you came. On the screen, trails are represented by a magenta  
line extending from the back of the current position arrow.  
The unit is set at the factory to automatically create and record a trail  
while it is turned on. The unit will continue recording the trail until the  
length reaches the maximum trail point setting. Default is 2,000, but it  
can record trails up to 9,999 points long. When the point limit is  
reached, the unit begins recording the trail over itself.  
By default, the trail flashes once a second, making it easier to see  
against the background map. With the default auto setting, the unit  
creates a trail by placing a dot (trail point) on the screen every time you  
change directions. The methods used for creating a trail and the trail  
update rate can be adjusted or even turned off. See Sec. 8 for Trail  
Options.  
To preserve a trail from point A to point B, you must "turn off" the trail  
by making it inactive before heading to point C or even back to point A.  
When the current trail is set inactive, the unit automatically creates  
and begins recording a new trail.  
To Save a Trail  
1. Press MENU|MENU|↓ to MY TRAILS|ENT.  
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Visible  
symbol  
Active  
symbol  
Sequence for saving a trail and beginning a new one. My Trails  
command (left). The Trails Menu (center). The arrow to the right of  
Trail 17 indicates the trail is "active," and the check to the left  
indicates the trail is visible on the map display. The third figure (right)  
shows the Edit Trail menu, with the Active command selected.  
2. Press ↓ to the active Trail Name|ENT.  
3. Press →, then ↓ to ACTIVE|ENT. This unchecks the Active option.  
4. To return to the previous page, press EXIT|EXIT|EXIT|EXIT. As you  
left the Edit Trail menu, you will notice a new trail was started with a  
new sequential number. In the example below, the new trail is number  
15, showing zero points. Note Trail 14 is inactive, but is still visible on  
the map.  
A new trail, "Trail 15," is created when Trail 14 is made inactive. Any  
new travel will be recorded in this trail, which is active and visible.  
Trails do not need to be visible in order to be active.  
You can save and recall up to 10 different plot trails, which can be  
copied to your MMC for archiving or for transfer to your MapCreate  
software.  
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Tip:  
Another quick way to stop recording one trail and begin a new one  
is to use the New Trail command: Press MENU|MENU|↓ to MY  
TRAILS|ENT|ENT.  
Caution:  
You also have the option of completely turning off trail  
recording, under the trail Options command. However, if the  
Update Active Trail option is left off, it will cancel the automatic  
trail creation feature.  
Displaying a Saved Trail  
The active trail is automatically displayed on the map (the "Visible"  
option) with the factory default settings. You can selectively turn the  
trail display off and on for any saved or active trail. In the Saved Trails  
List, visible trails have a check mark in front of the trail name.  
To turn off trail display:  
1. Press MENU|MENU|↓ to MY TRAILS|ENT.  
2. Press ↓|↓ to enter the Saved Trail list, then use ↑ or ↓ to select the  
desired Trail Name|ENT.  
3. Press ↓ → to VISIBLE|ENT. To return to the previous page, press  
EXIT|EXIT|EXIT|EXIT.  
To turn on trail display:  
1. Press MENU|MENU|↓ to MY TRAILS|ENT.  
2. Press ↓|↓ to enter the Saved Trail list, then use ↑ or ↓ to select the  
desired Trail Name|ENT.  
3. Press ↓ → to VISIBLE|ENT. To return to the previous page, press  
EXIT|EXIT|EXIT|EXIT.  
Navigating Trails  
There are three methods for following a trail: visual trailing, navigating  
a trail (forward) and backtracking a trail (backward). Try each method  
to see which you prefer.  
Visual trailing is the simplest method. It uses only the Map Page and  
requires no menu commands at all. The technique works the same if  
you are running a trail forward (from start to end) or backward (from  
end to start.) Visual trailing, however, provides no navigation  
information during the trip, such as the time to your destination.  
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The other two methods provide a full range of navigation data and work  
with both the Map Page and Navigation Page. The only difference  
between them is "navigating a trail" follows a trail forward (from start  
to end) while "backtracking" follows a trail in reverse (from end to  
start.)  
When hiking at walking speed with a hand-held GPS, we often use  
visual back trailing because it is a bit better at following each little  
turn on a footpath. At faster speeds, such as the highway or on the  
water, the Navigate Trail and Backtrack Trail commands are handy.  
Visual Trailing  
1. On the Map Page, zoom (ZIN or ZOUT) so your flashing trail is visible.  
2. Begin moving and watch the Map Page. Simply walk or steer so your  
current position arrow traces along the trail you have just made.  
Tip:  
Generally, when using this method, the smaller the zoom range, the  
more accurately you will be able to steer along the trail.  
Navigate a Trail (forward)  
The following figures illustrate the menu sequence for navigating a  
trail.  
1. Press MENU|MENU|↓ to MY TRAILS|ENT.  
2. Press ↓|↓ to enter the Saved Trail list, then use ↑ or ↓ to select the  
desired Trail Name|ENT.  
3. Press → to DELETE TRAIL|↓ to NAVIGATE|ENT.  
4. Press ↓ to NAVIGATE|ENT. The unit begins showing navigation  
information along the trail.  
NOTE:  
If you are already located at or near the beginning of your trail, the  
arrival alarm will go off as soon as you hit Enter. Just press EXIT to  
clear the alarm and proceed.  
5. Now, begin moving and follow your unit.  
6. When you reach your destination, be sure to cancel your navigation:  
press MENU|MENU|↓ to CANCEL NAVIGATION|ENT. The unit asks if you're  
sure, press ←|ENT.  
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Figure 1.  
Figure 2.  
Figure 4.  
Figure 3.  
Navigate a trail menu sequence: Fig. 1, My Trails command. Fig. 2,  
Trails Menu. Fig. 3, Edit Trail Menu. Fig. 4, Edit Route Menu with  
Navigate command highlighted for Trail 6. A trail is always converted  
to a "route" when you navigate the trail.  
On the Map Page, the trail you are navigating is represented by a  
magenta line. The bearing arrow on the compass rose points to the next  
waypoint on the trail.  
As you travel, the arrival alarm will go off when you near a trail  
waypoint, and the bearing arrow on the compass rose will swing around  
and point to the next trail waypoint. Press EXIT to clear the alarm.  
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North ꢀ  
Present  
position  
arrow  
Magenta  
trail line  
Trail point  
Navigate trail, map views: the driver (left) is northbound heading  
straight toward trail point 6. The northbound driver (right) has  
reached point 6 and has turned west to follow trail.  
1. Press MENU|MENU|↓ to MY TRAILS|ENT.  
2. Press ↓|↓ to enter the Saved Trail list, then use ↑ or ↓ to select the  
desired Trail Name|ENT.  
3. Press → to DELETE TRAIL|↓ to NAVIGATE|ENT.  
4. Press ↓ to NAVIGATE|→ to REVERSE|ENT|← to NAVIGATE|ENT. The unit  
begins showing reverse navigation information along the trail.  
NOTE:  
If you are already located at or near the end of your trail, the  
arrival alarm will go off as soon as you hit Enter. Just press EXIT to  
clear the alarm and proceed.  
5. Now, begin moving and follow your unit.  
6. When you reach your destination, be sure to cancel your navigation.  
Press MENU|MENU|↓ to CANCEL NAVIGATION|ENT. The unit asks if you're  
sure, press ←|ENT.  
Transfer Custom Maps and GPS Data Files  
Custom Maps:  
Custom maps work only from the MMC card or SDC card. When a card  
containing a Custom Map File is loaded into the unit, it automatically  
loads the map into memory when the unit is turned on.  
Instructions for copying Custom Map Files to an MMC are contained in  
the instruction manual for your MMC card reader and MapCreate 6  
software. For instructions on inserting a MMC into the Unit, see Sec. 2,  
Installation/Accessories.  
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NOTE:  
To load a Navionicschart, see Sec. 8 for the entry Navionics Charts.  
GPS Data files:  
GPS Data Files contain waypoints, routes, trails and event marker  
icons. Instructions for copying GPS Data Files between your computer  
and a MMC are contained in the instruction manual for your MMC  
card reader and MapCreate 6 software.  
GPS data automatically recorded in the unit's internal memory must be  
saved to the MMC as a GPS Data File in order to store it on your  
personal computer. GPS Data Files stored on an MMC must be copied  
from the card to the unit's internal memory before the unit can read  
them. Here's how:  
1. Insert the MMC into your unit. Press MENU|MENU|↓ to SYSTEM  
SETUP|ENT|↓ to TRANSFER MY DATA|ENT and the screen below appears.  
The Transfer My Data submenu asks if you want to save data to the  
MMC or load data from the MMC into the unit's memory.  
2. The Transfer My Data menu includes a message which tells you if an  
MMC is present or not. If no MMC is present, you must first insert a  
card into the unit to activate the Load or Save commands.  
To transfer data from the unit to the MMC: press ENT (for SAVE.)  
To transfer data from the MMC to the unit: press → to LOAD|ENT.  
3. Saving to MMC: To accept the default name "Data" for the GPS  
Data File, press ↓ to SAVE DATA|ENT. If you wish to rename the file (as  
shown in the following figures), press ENT to activate the selection box.  
Press ↑ or ↓ to change the first character, then press → to the next  
character and repeat until the name is correct. Then, press ENT|↓ to  
SAVE DATA|ENT.  
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The unit will display a completion message when the data transfer is  
finished. To return to the Page view, repeatedly press EXIT.  
From left to right, these figures show the sequence for naming and  
saving a GPS Data File from the unit's memory to an MMC.  
4. Loading to unit memory: There may be more than one GPS Data  
File (*.USR) on the card. To select a file, press ENT to activate the  
selection box, use ↓ or ↑ to highlight the file, then press ENT to accept  
the selection. Next, press ↓ to LOAD|ENT. The unit will display a  
completion message when the data transfer is finished. To return to the  
Page view, press EXIT|EXIT|EXIT|EXIT.  
Figure 2.  
Figure 1.  
These figures show the menu sequence for loading a GPS Data File  
from an MMC into the unit's memory.  
Cancel Navigation  
You can turn off any of the navigation commands after you reach your  
destination or at any other time by using the Cancel Navigation  
command. Press MENU|MENU|↓ to CANCEL NAVIGATION|ENT|← to YES|ENT.  
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Section 7:  
Advanced GPS Operations  
Find Distance From Current Position  
1. While on the Map Page press: MENU|↓ to FIND DISTANCE|ENT.  
2. Center your cursor over the position you want to find the distance to.  
A rubber band line appears, connecting your current position to the  
cursor's location. The distance along that line will appear in a pop-up  
box. The box also shows the bearing to the point you're measuring to.  
3. Press EXIT to return to regular operation.  
The distance from Dallas to Little Rock is 292.2 miles (left). The distance  
from the boat's current position to the boat ramp is 0.58 miles (right).  
Find Distance From Point to Point  
You can also measure distance between two other points on the map.  
1. While on the Map Page press: MENU|↓ to FIND DISTANCE|ENT.  
2. Center your cursor over the first position. (A rubber band line  
appears, connecting your current position to the cursor's location.) Press  
ENT to set the first point, and the rubber band line disappears.  
3. Move the cursor to the second position. The rubber band line  
reappears, connecting the first point you set to the cursor. The distance  
along that line will appear in a pop-up box.  
4. Press EXIT to clear the command and return to the page screen.  
Icons  
Icons are graphic symbols used to mark some location, personal point of  
interest or event. They can be placed on the map screen, saved and  
recalled later for navigation purposes. These are sometimes referred to  
as event marker icons. The unit has 42 different symbols you can pick  
from when creating an icon.  
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Icons are similar to waypoints, but they do not store as much  
information as waypoints do. You can't use a menu to navigate to icons  
like you can with waypoints. But, you can use the map cursor and  
navigate to any icon on the map.  
You can create an icon at the cursor position on the map, or at your  
current position while you are navigating.  
Create Icon on Map  
1. Use the arrow keys to move the cursor to the place you want to make  
an icon.  
2. Press ENT and the screen shows a "Select Icon Symbol" menu.  
3. Press ← or ↑ or → or ↓ to select your icon symbol, then press ENT.  
The icon appears on the map.  
Select Icon Symbol menu (left); Boat Ramp icon on map (right).  
(Cursor has been moved for clarity).  
Create Icon at Current Position  
1. While you are traveling, press ENT and the screen shows the "Select  
Icon Symbol" menu.  
2. Press ← or ↑ or → or ↓ to select your icon symbol, then press ENT.  
The icon appears on the map.  
Delete an Icon  
You can delete all the icons at one time, delete all icons represented by  
a particular symbol, or delete a selected icon from the map.  
1. Press MENU|↓ to DELETE MY ICONS|ENT.  
2. Press ↓ to DELETE ALL ICONS, DELETE BY SYMBOL, or DELETE FROM MAP and  
press ENT.  
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Delete icons menu.  
The Delete All Icons command will ask if you are sure. Press ← to  
YES|ENT. All icons will be deleted from the map.  
The Delete by Symbol command will launch the Select Symbol menu.  
Press ← or ↑ or → or ↓ to select the icon symbol to delete, then press  
ENT. A message appears saying all icons with the selected symbol have  
been deleted.  
The Delete From Map command will prompt you to move the cursor  
over an icon to select it. After selecting the icon, press ENT and it  
disappears from the map.  
Navigate to an Icon  
Use the Navigate to Cursor command, and use the cursor to select the  
desired icon on the map.  
1. Use arrow keys to center cursor cross-hair over the icon.  
2. To navigate to the selected icon location: press MENU|ENT. Follow  
course line on the Map Page or the compass bearing arrow on the  
Navigation Page.  
Routes  
A route is a series of waypoints, linked together in an ordered sequence  
to mark a course of travel. You can visualize a route as a string of  
beads. The beads represent waypoints and the string represents the  
course of travel connecting waypoint to waypoint.  
The course from one waypoint to the next is a leg. Routes are composed  
of one or more legs. The legs of all GPS routes are based on straight  
lines between waypoints.  
A route provides the automatic capability to navigate through several  
waypoints without having to reprogram the unit after arriving at each  
waypoint. Once programmed into the GPS unit, a route provides the  
option of navigating forward through the route waypoints or in reverse  
order. You can even begin navigating in the middle of a route!  
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Create and Save a Route  
You have the option of creating and editing a route in the unit, or you  
can make a route on your computer with our MapCreate 6 software.  
PC-created Routes  
MapCreate is the easiest method for preparing a route, simply because  
your PC's larger screen, keyboard and mouse are easier to manipulate  
than the gimbal-mounted unit.  
To load a MapCreate route into the unit, follow the instructions in  
MapCreate's manual for creating and saving a route as part of a GPS  
Data File (file format *.usr). Copy the GPS Data File to an MMC and  
insert the MMC in the unit. (See Sec. 2 for instructions on installing  
MMCs. To load the GPS Data File into the Unit memory, see the entry  
on Transfer Custom Maps & GPS Data Files in Sec. 6, Basic GPS  
Operations.  
Routes Created in the Unit  
You can create a route by selecting saved waypoints from the waypoint  
list or you can set a series of route waypoints on the map with cursor  
arrows and the Enter key. In this example, we'll create a route from the  
map.  
1. From the NAVIGATION PAGE (WITH DIGITAL DATA), press MENU|ENT or from  
the MAP PAGE, press MENU|MENU|↓ to ROUTE PLANNING|ENT.  
Route Planning command on Main Menu (left) will open the Route List  
screen (right).  
2. Press ↓ |↓ |↑ or↓ to route name|ENT|↓ to (END OF ROUTE)|ENT|↓ to  
ADD FROM MAP|ENT. The Map Page appears with the cursor showing.  
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Edit Route menu (left). Edit Route Waypoints menu (right)  
with Add From Map command selected.  
3. Use the Zoom keys and arrow keys to move the map and cursor until  
the cursor is centered on the spot where you want your route to begin.  
4. To set the first route waypoint press ENT. In this example, we moved  
to the intersection of 11th Street and 145th E. Ave. to start our route,  
which ends at a public hunting area next to a river.  
3.  
1.  
2.  
Route creation sequence, from left: (Fig. 1) Set route waypoint (1) at  
11th St. & 145th Ave. (Fig. 2) Move cursor north to set point (2) at 145th  
& Admiral. (Fig. 3) With point (2) set, move cursor east to mark  
interstate on-ramp with waypoint (3). In figures 2 and 3, notice the  
rubber band line extending from the previously set waypoint to the  
cursor. This line will become the course for the route.  
6.  
4.  
5.  
Route creation sequence, continued: (Fig. 4) Point (3) set at on-ramp.  
(Fig. 5) Waypoint (4) set at highway exit to frontage road leading to  
river. Waypoint (5) ends the route at a tree stand in the hunting area.  
(Fig. 6) Press EXIT to save the route and you return to this screen.  
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5. Move the cursor to the next point in the route, a spot where you need  
to turn or change direction, and press ENT to set the next waypoint.  
6. Repeat step five until the route reaches your destination.  
7. To save your route, press EXIT. The unit reverts to the Edit Route  
screen, with the route automatically named "Route 1" and stored in the  
unit's internal memory. In our example, Route 1 already existed, so the  
unit automatically made "Route 2."  
You can edit the route and run other commands, but if you are finished  
with the route for now, return to the last page displayed by  
pressing EXIT repeatedly.  
Delete a Route  
1. From the NAVIGATION PAGE (WITH DIGITAL DATA), press MENU|ENT or from  
the MAP PAGE press MENU|MENU|↓ to ROUTE PLANNING|ENT.  
2. Press ↓ to Saved Routes, use ↓ to select route, then press|ENT.  
3. Press ↓ or ↑ to NAVIGATE, then → to DELETE|ENT|← to YES|ENT.  
Tip:  
You can also delete all routes at once:  
1. From the NAVIGATION PAGE (WITH DIGITAL DATA), press MENU|ENT or  
from the MAP PAGE press MENU|MENU|↓ to ROUTE PLANNING|ENT.  
2. Press → to DELETE ALL|ENT|← to YES|ENT.  
Edit a Route  
You can edit the route name if you wish.  
1. From the NAVIGATION PAGE (WITH DIGITAL DATA), press MENU|ENT or from  
the MAP PAGE press MENU|MENU|↓ to ROUTE PLANNING|ENT.  
2. Press ↓ to Saved Routes, select a route, then press |ENT|ENT.  
3. Press ↑ or ↓ to change the first character, then press → to move the  
cursor to the next character and repeat until the name is correct, then  
press  
ENT.  
Return to the previous page by pressing  
EXIT|EXIT|EXIT|EXIT.  
You can edit the route by adding and removing waypoints.  
1. From the NAVIGATION PAGE (WITH DIGITAL DATA), press MENU|ENT or from  
the MAP PAGE press MENU|MENU|↓ to ROUTE PLANNING|ENT.  
2. Press ↓ to Saved Routes, pick a route and press|ENT|↓ to the  
WAYPOINTS list. Use ↓ and ↑ to select a waypoint, then press ENT.  
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Edit Route Waypoints menu.  
3. Use ↓ and ↑ to select a command from the Edit Route Waypoints  
menu and press ENT. Add From Map lets you insert a waypoint in the  
route by clicking on a map location with the cursor. Add Waypoint calls  
up the Waypoint list so you can insert a waypoint. The Remove  
Waypoint command will delete the waypoint from the route. View  
Waypoint will show you where the selected waypoint is on the map.  
Navigate a Route  
1. From the NAVIGATION PAGE (WITH DIGITAL DATA), press MENU|ENT or from  
the MAP PAGE, press MENU|MENU|↓ to ROUTE PLANNING|ENT.  
Routes menu (left) and the Edit Route menu (right) with the Navigate  
command selected.  
2. Press ↓ to select Saved Route, pick a route and press|ENT|↓ to  
NAVIGATE|ENT.  
3. Upon arrival at your destination, cancel navigation:  
press MENU|MENU|↓ to CANCEL NAVIGATION|ENT|← to YES|ENT.  
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Navigate a Route in Reverse  
Here's how you run a route backward, from the end waypoint to the  
beginning waypoint:  
1. From the NAVIGATION PAGE, press MENU|ENT or from the MAP PAGE,  
press MENU|MENU|↓ to ROUTE PLANNING|ENT.  
2. Press ↓ to select route name|ENT|↓ to NAVIGATE|→ to REVERSE|ENT|←  
to NAVIGATE|ENT.  
3. Upon arrival at your destination, cancel navigation:  
press MENU|MENU|↓ to CANCEL NAVIGATION|ENT|← to YES|ENT.  
Figure 1.  
Figure 2.  
Navigating along a route: Fig. 1 shows the Navigation Page at the start  
of a route, heading straight for the waypoint 001. In Fig. 2, the traveler  
has arrived at Wpt 001 and the arrival alarm has been triggered.  
Trails  
Delete a Trail  
This  
is  
the  
command  
used  
to  
delete  
a
trail:  
Press MENU|MENU|↓ to MY TRAILS|ENT|↓ to trail name|ENT|→ to DELETE  
TRAIL|ENT|← to YES|ENT.  
Tip:  
You can also delete all trails at once:  
1. Press MENU|MENU|↓ to MY TRAILS|ENT.  
2. Press → to DELETE ALL|ENT|← to YES|ENT.  
Edit a Trail Name  
To edit a trail name: press MENU|MENU|↓ to MY TRAILS|ENT|↓ to trail  
name|ENT|ENT. Press ↑ or↓ to change the first character, then press →  
to the next character and repeat until the name is correct. Press ENT  
then EXIT|EXIT|EXIT|EXIT to return to the previous page display.  
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Tip:  
You can quickly call up the Edit Trail menu by selecting a trail on  
the map with the cursor. Simply move the cursor over a trail and a  
pop-up box appears. Press WPT and the Edit Trail menu opens.  
Trail selected with map cursor (left). The pop-up box shows distance  
and bearing from current position to the selected point on the trail.  
The Edit Trail menu (right).  
Edit a Trail Color  
To edit a trail color: press MENU|MENU|↓ to MY TRAILS|ENT|↓ to trail  
name|ENT|↓ to COLOR|ENT. Press ↑ or ↓ to select a color style, then press  
ENT. Press EXIT|EXIT|EXIT|EXIT to return to the previous page display.  
Edit a Trail Pattern  
To edit a trail pattern: press MENU|MENU|↓ to MY TRAILS|ENT|↓ to trail  
name|ENT|↓ to PATTERN|ENT. Press ↑ or ↓ to change the first character,  
then press → to the next character and repeat until the pattern is  
correct. Press ENT, then EXIT|EXIT|EXIT|EXIT to return to the previous  
page display.  
Edit Trail Menu with Pattern option selected (left). Edited trail with  
dotted line pattern (right).  
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Utilities  
Utilities are useful tools for traveling or for outdoor activities.  
Alarm Clock  
To get to the alarm clock menu: press MENU|MENU|↓ to TIMERS|ENT|↓  
to ALARM CLOCK|ENT.  
Sun/Moon Rise & Set Calculator  
To get to the Sun/Moon menu: press MENU|MENU|↓ to SUN/MOON  
CALCULATIONS|ENT.  
Trip Calculator  
To get to the Calculator menu: press MENU|MENU|↓ to TRIP  
CALCULATOR|ENT.  
Trip Down Timer  
To get to the Down Timer menu: press MENU|MENU|↓ to TIMERS|ENT|↓  
to DOWN TIMER|ENT.  
Trip Up Timer  
To get to the Up Timer menu: press MENU|MENU|↓ to TIMERS|ENT|ENT.  
Waypoints  
Delete a Waypoint  
To  
WPT|ENT|ENT|ENT|↓  
WAYPOINT|ENT|← to YES|ENT.  
delete  
a
waypoint  
from  
waypoint  
the  
waypoint  
name|ENT|↓  
list:  
to  
press  
DELETE  
to  
To delete a waypoint from the map:  
1. Use the arrow keys to select the waypoint with the cursor.  
2. Press WPT|→ to DELETE WAYPOINT|ENT|← to YES|ENT. To return to  
the previous page and clear the cursor, press EXIT.  
To delete all waypoints at one time: press MENU|MENU|↓ to SYSTEM  
SETUP|ENT|↓ to DELETE ALL MY WAYPOINTS|ENT|← to YES|ENT. To return  
to the previous page, press EXIT|EXIT.  
Edit a Waypoint  
Waypoint Name  
To edit waypoint name: 1. Press WPT|ENT|ENT|ENT|↓ to waypoint  
name|ENT|↓ to EDIT WAYPOINT|ENT|ENT.  
2. Press ↑ or ↓ to change the first character, then press → to the next  
character and repeat until the name is correct. Press ENT then  
EXIT|EXIT|EXIT|EXIT to return to the previous page display.  
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Waypoint Symbol  
To edit waypoint symbol: 1. Press WPT|ENT|ENT|ENT|↓ to waypoint  
name|ENT|↓ to EDIT WAYPOINT|ENT|↓ to CHOOSE SYMBOL|ENT.  
2. Use arrow keys to select desired symbol and press ENT. To return to  
the previous page, press EXIT|EXIT|EXIT|EXIT.  
Waypoint Position  
To edit waypoint position: 1. Press WPT|ENT|ENT|ENT|↓ to waypoint  
name|ENT|↓ to EDIT WAYPOINT|ENT.  
2. Latitude: press → to LATITUDE|ENT. Press ↑ or ↓ to change the first  
character, then press → to the next character and repeat until the  
latitude is correct. Press EXIT.  
3. Longitude: press ↓ to LONGITUDE|ENT. Press ↑ or ↓ to change the first  
character, then press → to the next character and repeat until the  
longitude is correct. Press EXIT.  
4. When latitude and longitude are correct, return to the previous page:  
press EXIT|EXIT|EXIT|EXIT.  
Selecting a Waypoint  
To select a waypoint on the map (for navigating, editing, etc.,) use the  
arrow keys and center the cursor over the waypoint. A highlighted halo  
will appear around the waypoint.  
Set a Waypoint by Average Position  
This feature sets a waypoint at the current position after taking several  
position readings and averaging them. This boosts waypoint position  
accuracy by helping to eliminate errors caused by atmospheric  
conditions and other factors.  
1. Press WPT|→ to SUBCATEGORY column|↓ to NEW|ENT.  
2. Press ↓ or ↑ to AVERAGE POSITION|ENT|press → to CREATE|ENT.  
3. Wait while the unit takes points to average for the position. (The greater  
the number of points, the greater the accuracy.) When the desired number  
of points accumulates, press ENT to create and save the waypoint.  
4. The Edit Waypoint menu appears. You can simply save the waypoint  
by pressing EXIT|EXIT or you can edit the waypoint.  
Set a Waypoint by Projecting a Position  
This feature sets a waypoint at a point located a specific distance and  
bearing from a reference position. The reference position can be  
selected from your waypoint list, a map feature or from the Points of  
Interest list.  
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1. Press WPT|→ to SUBCATEGORY column|↓ to NEW|ENT.  
2. Press ↓ to PROJECTED POSITION|ENT|→ to CREATE|ENT.  
3. Press → to CHOOSE REFERENCE|ENT. Use ↑ and ↓ to select a waypoint,  
map feature or Point of Interest. When the point has been selected,  
press ENT and the point's position appears as the reference position.  
4. Press ↓ to DISTANCE|ENT. Press ↑ or ↓ to change the first character,  
then press → to the next character and repeat until the distance is  
correct. Press ENT.  
5. Press ↓ to BEARING|ENT. Press ↑ or ↓ to change the first character,  
then press → to the next character and repeat until the bearing is  
correct. Press ENT.  
6. Press ↑ to PROJECT|ENT. The Edit Waypoint menu appears. You can  
simply save the new projected waypoint by pressing EXIT|EXIT or you  
can edit the waypoint. (Press EXIT|ENT if you want to immediately  
begin navigating to the new waypoint.)  
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Section 8:  
System & GPS Setup Options  
Alarms  
This unit has several GPS alarms. The factory default setting has all  
the alarms turned on. You can turn the alarms off and on and change  
their distance settings.  
You can set an arrival alarm to flash a warning message and sound a  
tone when you cross a preset distance from a waypoint. For example, if  
you have the arrival alarm set to 0.1 mile, then the alarm will flash a  
message when you come within 0.1 mile of the recalled waypoint.  
The off course alarm warns you when your track drifts too far to the  
right or left of the course line to the waypoint. For example, if the  
alarm is set to 0.1 mile, then the alarm flashes a message if you drift  
0.1 of a mile or more to the right or left of the line to the waypoint.  
The anchor alarm is triggered when you drift outside of a preset radius.  
Again, using the 0.1 mile as an example, if you're anchored and your  
boat moves more than 0.1 mile, the alarm will flash a message and  
sound a tone.  
Alarms command (left); Alarm menu (right).  
To change alarm settings:  
1. Press MENU|MENU|↓ to ALARMS|ENT. Choose GPS ALARMS|ENT.  
2. Scroll ↓ or ↑ to select the desired category, then press ENT to check or  
clear the Enabled box. This turns the alarm on (checked) or off  
(unchecked.)  
3. To change distance settings, scroll ↓ or ↑ to select the desired  
category, then press → |ENT to activate the distance dialog box. Press ↑  
or ↓ to change the first character, then press → to the next character  
and repeat until the name is correct.  
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4. When your adjustments are finished, return to the last page  
displayed by repeatedly pressing EXIT.  
IMPORTANT ALARM NOTES:  
Anchor Alarm - The anchor alarm may be triggered even when  
you're sitting still. This typically happens when using small (less  
than 0.05 mile) anchor alarm ranges.  
Arrival Alarm - If you set the arrival alarm's distance to a small  
number and you run a route (see the Navigate Routes segment),  
this unit may not show navigation data to the next waypoint, once  
you arrive at the first one, since you may not be able to come close  
enough to the first waypoint to trip the arrival alarm.  
Auto Satellite Search  
To lock onto the satellites, the GPS receiver needs to know its current  
position, UTC time and date. (Elevation (altitude) is also used in the  
equation, but it's rarely required to determine a position.) It needs this  
data so that it can calculate which satellites should be in view. It then  
searches for only those satellites.  
When your GPS receiver is turned on for the first time, it doesn't know  
what your position or elevation (altitude) is. It does know the current  
UTC time and date since these were programmed into it at the factory  
and an internal clock keeps the time while the unit is turned off. (If the  
time and/or date are incorrect, you can set it using the "Set Local Time"  
menu.)  
The unit begins searching for the satellites using the above data that it  
acquired the last time it was turned on. This probably was at the  
factory. Since it's almost certain that you're not at our factory, it's  
probably looking for the wrong satellites.  
If it doesn't find the satellites it's looking for after approximately one  
minute, it switches to Auto Search. The receiver looks for any satellite  
in the sky. Due to advanced technology, the auto search time has  
shrunk significantly from the early days of GPS.  
Once the unit locks onto the satellites, it should take less than a minute to  
find your position the next time it's turned on, provided you haven't moved  
more than approximately 100 miles from the last location it was used.  
Check MMC Files and Storage Space  
To check MMC Files:  
Press MENU|MENU|↓ to BROWSE MMC FILES|ENT.  
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Main Menu (left); MMC File Browser (right).  
Communications Port Configuration  
The unit has two NMEA 0183 version 2.0 compatible communication  
ports, or com ports for short. The Com Port Menu, which is accessed  
from the System Setup Menu, allows you to configure the  
communications ports to send or receive data to another electronic  
device, such as an autopilot. Com port 1 and Com port 2 can be used for  
NMEA.  
Menus for changing Com Port settings.  
For assistance in configuring the unit to communicate with another  
device, consult the factory. Customer service phone numbers are in the  
back of this manual. Also see the entries below for Configure NMEA. To  
set Com Port Configuration:  
1. Press MENU|MENU|↓ to SYSTEM SETUP|ENT.  
2. Press ↓ to COMMUNICATIONS PORT|ENT.  
Configure NMEA  
You can configure the unit to use specific NMEA sentences.  
1. Press MENU|MENU|↓ to SYSTEM SETUP|ENT.  
2. Press ↓ to COMMUNICATIONS PORT|ENT|↓ to CONFIGURE NMEA|ENT.  
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3. A menu appears showing the prefixes of the available NMEA  
sentences. A check mark next to a prefix means the prefix is in use. Use  
↑ ↓, → ← to select a prefix, then press ENT to turn off the prefix. (Press  
ENT again to check the box and turn a prefix on.)  
4. When the desired prefixes are checked or unchecked, press  
EXIT|EXIT|EXIT|EXIT to return to the previous page.  
Coordinate System Selection  
The Coordinate System Menu lets you select the coordinate system to  
use when displaying and entering position coordinates.  
Menus for changing coordinate system.  
To get to Coordinate System Selection:  
1. Press MENU|MENU|↓ to GPS SETUP|ENT.  
2. Press ↓ to COORDINATE SYSTEM|ENT.  
This unit can show a position in degrees (36.14952°); degrees, minutes  
and thousandths of a minute (36° 28.700'); or degrees, minutes, seconds  
and tenths of a second (36° 28' 40.9"). It can also show position in: UTM  
(Universal Transverse Mercator) projection; MGRS (Standard); MGRS  
(Standard + 10); Map Fix; Loran TD; British, Irish, Finnish, German,  
New Zealand, Swedish, Swiss, Taiwan, Greek and Military grids.  
UTM's are marked on USGS topographic charts. This system divides  
the Earth into 60 zones, each 6 degrees wide in longitude.  
British, Irish, Finnish, German, New Zealand, Swedish, Swiss, Taiwan,  
and Greek grid systems are each the national coordinate system used  
only in their respective countries. In order to use these grid systems,  
you must be in the respective country. This unit will pick the matching  
datum for you when you select the grid. See the entry on Map Datum  
Selection for more information.  
The military grid reference system (MGRS) uses two grid lettering  
schemes, which are referred to as standard and standard + 10 MGRS  
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on this unit. Your position and datum in use determines which one to  
use. If you use standard, and your position is off significantly, then try  
the alternate.  
NOTE: When the position format is changed, it affects the way all  
positions are shown on all screens. This includes waypoints.  
To change the coordinate system, press ENT while COORDINATE SYSTEM is  
highlighted. Press the ↑ or ↓ keys to highlight the desired format. Press  
ENT to select it. Press EXIT to close the menu.  
To setup Loran TD:  
NOTE:  
If the Loran TD conversion is chosen, you must enter the local  
Loran chain identification for the master and slaves. Do this by  
selecting "Setup Loran TD" at the bottom of the "Coordinate  
System" menu and select the ID. Press EXIT to close this menu.  
Configure Loran TD menu.  
Map Fix  
Map Fix is used with charts or maps. This system asks for a reference  
position in latitude/longitude, which you take from a marked location  
on the map. It then shows the present position as distance on the map  
from that reference point.  
For example, if it shows a distance of UP 4.00" and LEFT 0.50", you  
then measure up four inches and to the left a half-inch from the  
reference point on the map to find your location.  
To configure a map fix:  
To use this format, you need to follow these steps in order. First, take  
your map of the area and determine a reference latitude/longitude.  
(Please note that in order for this system to work, the  
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latitude/longitude lines must be parallel with the edge of the map.  
USGS maps are parallel, others may not be. Also, this works better  
with smaller scale maps.) The reference position can be anywhere on  
the map, but the closer it is to your location, the smaller the numbers  
will be that you'll have to deal with.  
Once you've decided on a reference position, you can save it as a  
waypoint. See the waypoint section for information on saving a  
waypoint. Save the reference position as a waypoint. Exit from the  
waypoint screens.  
1. Press MENU|MENU|↓ to GPS SETUP|ENT.  
2. Press ↓ to COORDINATE SYSTEM|ENT.  
3. Press ↓ to SETUP MAP FIX|ENT.  
The following screen appears, and MAP SCALE is highlighted. Press ENT  
and enter the map's scale. This is generally at the bottom of the paper  
map. It's shown as a ratio, for example 1:24000. Press EXIT and the unit  
returns to the Configure Map Fix screen.  
Configure a map fix so the unit can find your position on a printed  
chart or topographical map.  
Press ↓ to SELECT ORIGIN |ENT|ENT|ENT to bring up the waypoint list.  
Select the waypoint that you saved the reference point under and press  
ENT. The unit displays a waypoint information screen with the  
command SET AS ORIGIN selected; press ENT and the unit returns to the  
Configure Map Fix menu. Finally, press EXIT to close this menu. Now  
press ↑ to COORD SYSTEM|ENT, select MAP FIX from the list and press  
ENT|EXIT|EXIT|EXIT. All position information now shows as a distance  
from the reference point you chose.  
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Customize Page Displays  
Several page display options have customizable data boxes to provide  
constant on-screen information.  
The various data available from your unit are divided into categories in  
the Data Viewer menu. These categories include GPS Data, Navigation,  
Trip Calculator, Time, Sonar Data and Miscellaneous Data. You can  
select items from any of these categories for display in any data box.  
The category divisions are there to help you sort through the  
information.  
To change the information displayed in a data box:  
On the Page display you wish to change, press MENU|↓ to  
CUSTOMIZE|ENT. A data box name flashes, indicating it is selected. Press  
ENT to change the box or hit ↑, ↓, → or ← to select another box, then  
press ENT. You'll see a list of categories with "+" or "–" symbols next to  
each category. A category with a "+" is expandable, meaning its  
contents are hidden.  
Customize Menu with the GPS Data category expanded.  
Selecting the category name and pressing ENT will show the category's  
contents, so you can choose items within it. An expanded category (one  
with a "–" next to its name) can be collapsed to hide its contents. Just  
select the category name and press ENT.  
Expand any categories that might contain data you want to display.  
Then press ↓ or ↑ to select a different data option. With the new option  
highlighted, press ENT to switch the contents of the box to the new data  
type, then press EXIT. You can now select another box to change. When  
you are finished with the settings, press EXIT again to end the  
Customize command, and the box name stops flashing.  
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A Page display can show a limited number of data boxes. You can not  
turn them off or add more data boxes.  
GPS Simulator  
The GPS simulator lets you use the unit as if you were outdoors  
navigating somewhere. It's a great way to practice using your unit. You  
can set the starting location by entering latitude/longitude (Starting  
Position) or from a stored waypoint, map place or POI location (CHOOSE  
START command). You can steer your position and change speed on the  
map by using the arrow keys (STEER WITH ARROWS command) or by setting  
the track and speed in the dialog boxes provided on the simulator menu  
screen.  
To get to the GPS Simulator:  
1. Press MENU|MENU|↓ to GPS SETUP|ENT.  
2. Press ↓ to GPS SIMULATOR|ENT. The GPS Simulator Menu appears.  
GPS Setup Menu (left); GPS Simulator menu (right).  
Choose the desired settings, then turn the simulator on by highlighting  
the GPS SIMULATOR ON box and pressing ENT key. Press EXIT|EXIT|EXIT  
to close this menu. A message and tone appear periodically, warning  
you that the simulator is on. To turn the simulator off, repeat the above  
steps or turn the unit off.  
While in simulator mode, you can press EXIT to clear the steering and  
speed boxes from the screen while continuing the simulation. This will  
allow you to use the map cursor during a simulation. To turn steering  
and speed boxes back on again, return to the GPS Simulator menu,  
select the STEER WITH ARROWS command, press ENT. Press EXIT to return  
to the previous page.  
Simulating Trail or Route Navigation  
In Simulator mode, your unit can automatically follow a trail or route  
without manual steering if you use these steps:  
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1. From the Map Page, go to the simulator menu. Pick a STARTING  
POSITION at or near the beginning of your trail/route. Enter an  
approximate TRACK (shown in compass degrees) that will point you  
toward the start of the trail/route.  
2. Set SPEED to zero. Select STEER WITH ARROWS command and press ENT,  
which turns on the simulator and returns you to the Map Page.  
3. Begin navigating along the trail/route. (If you are close enough to the  
first waypoint, the arrival alarm will usually go off as soon as  
navigation begins. Press EXIT to clear the alarm.) When navigation  
starts, press ↑ to increase speed to the desired setting.  
4. Press EXIT to turn off the steering and speed boxes. The unit will now  
automatically "steer" along the trail or route. When you arrive at your  
"destination," cancel navigation as you normally do.  
Tip:  
You can pick any spot on the map to begin your simulation session  
by using the Initialize GPS command. This makes your unit think  
it's located at the position you select.  
Hide GPS Features  
If there is no GPS antenna/receiver module attached to this unit, the  
GPS menus and features can be hidden from view with this command.  
The default setting is off, allowing you to rotate between the Sonar  
Page and the GPS pages and features. To hide GPS features:  
Press MENU|MENU|↓ to SYSTEM SETUP|ENT|↓ to HIDE GPS FEATURES|ENT. The  
GPS menus and pages are now hidden.  
To restore GPS FEATURES, press MENU|MENU|↓ to SHOW GPS FEATURES|ENT.  
The GPS menus and pages are available once again.  
Initialize GPS  
This command makes the unit operate as if it is sitting someplace other  
than its actual location. So, you and your unit could be located in  
Kansas City, but practice navigating in the ocean off Islamorada,  
Florida.  
1. With the GPS simulator off, press MENU|MENU|↓ TO GPS  
SETUP|ENT|ENT.  
2. A message appears, telling you to move the cursor near the desired  
location and press ENT. When the message automatically clears, follow  
the message instructions. Turn on the GPS Simulator.  
3. In a moment, your present position marker arrow appears on the  
map in the location you selected with the cursor. The unit will consider  
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that spot as it's last known position until changed by either a live  
satellite lock-on or a new simulator location.  
Map Auto Zoom  
This receiver has an auto zoom feature that eliminates much of the  
button pushing that other brands of GPS receivers force you to make. It  
works in conjunction with the navigation features.  
First, start navigation to a waypoint. (See the waypoint section for  
more information on navigating to a waypoint.) Then, with the auto  
zoom mode on, the unit zooms out until the entire course shows, from  
the present position to the destination waypoint. As you travel toward  
the destination, the unit automatically begins zooming in — one zoom  
range at a time — always keeping the destination on the screen.  
To turn this feature on, from the MAP PAGE, press MENU|↓ to AUTO  
ZOOM|ENT|EXIT. Repeat these steps to turn it off.  
Map Data  
This menu lets you turn the map off, if desired (which turns the map  
screen into a GPS plotter); turn off or on the pop-up map info boxes;  
draw the map boundaries or boxes around the areas of high detail; or  
fill water areas with white. You can also turn on or off Map Overlays,  
which display latitude and longitude grid lines or range rings on the  
map. This menu lets you select Navionics Maps. For instructions, see  
the Navionics Charts entry in this section.  
To get to Map Data:  
From the Map Page, press MENU|↓ to MAP DATA|ENT.  
Map Menu (left); Map Data Menu (right).  
Pop-up Map Info  
From the Map Page, press MENU|↓ to MAP DATA|ENT. Press ↓ to POPUP  
MAP INFO. With the option highlighted, press ENT to check it (turn on)  
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and uncheck it (turn off.) After the option is set, press EXIT|EXIT to  
return to the page display.  
Map Boundaries  
From the Map Page, press MENU|↓ to MAP DATA|ENT. Press ↓ to DRAW  
MAP BOUNDARIES. With the option highlighted, press ENT to check it (turn  
on) or uncheck it (turn off.) After the option is set, press EXIT|EXIT to  
return to the page display.  
Fill Water With White  
From the Map Page, press MENU|↓ to MAP DATA|ENT. Press ↓ to FILL  
WATER WITH WHITE. With the option highlighted, press ENT to check it  
(turn on) and uncheck it (turn off.) After the option is set, press  
EXIT|EXIT to return to the page display.  
Map Overlays (Range Rings; Lat/Long Grid)  
The map screen can be customized with four range rings and/or grids  
that divide the plotter into equal segments of latitude and longitude.  
Range rings are handy for visually estimating distances on the map.  
The ring diameters are based on the current zoom range. For example:  
at the 100-mile zoom, the screen will show two rings with your current  
position in the center. The large ring touching the left and right sides of  
the screen is 100 miles in diameter (same as the zoom range). The  
second smaller ring is 50 miles in diameter (always 1/2 the zoom  
range).  
The distance from your current position to the smaller ring (the ring's  
radius) is 25 miles (always 1/4 the zoom range). With the arrow keys  
and map cursor, you can scroll the map to see the third and fourth  
rings. In this example, the distance to the third ring is 75 miles and  
distance to the fourth ring is 100 miles from your current position.  
To set range rings: From the Map Page, press MENU|↓ to MAP  
DATA|ENT. Press ↓ and → to RANGE RINGS. With the option highlighted,  
press ENT to check it (turn on) and uncheck it (turn off.) After the  
option is set, press EXIT|EXIT to return to the page display.  
To set Lat/Long Grid: From the Map Page, press MENU|↓ to MAP  
DATA|ENT. Press ↓ and → to LAT/LON GRID LINES. With the option  
highlighted, press ENT to check it (turn on) and uncheck it (turn off.)  
After the option is set, press EXIT|EXIT to return to the page display.  
Map Datum Selection  
Maps and charts are based on a survey of the area that's covered by the  
map or chart. These surveys are called "Datums." Maps that are  
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created using different datums will show the same latitude/longitude in  
slightly different locations.  
All datums are named. The GPS system is based on the WGS-84  
datum, which covers the entire world. Other datums may also cover the  
entire world, or just a small portion of it. By default, your unit uses the  
WGS-84 datum. It, however, can show your position using one of 191  
different datums. To change the datum:  
1. Press MENU|MENU|↓ to GPS SETUP|ENT|↓ to DATUM SELECTION|ENT.  
2. Scroll ↓ or ↑ to select the desired datum, then press ENT.  
3. To return to the last page displayed, press EXIT|EXIT.  
A list of the datums used by this unit is in the back of this manual.  
GPS Setup Menu (left); Map Datum Menu (right).  
Map Detail Category Selection  
This menu determines which of the mapping features are shown on the  
screen. This includes, waypoints, trails, icons, cities, highways, etc. You  
can select any of these items, customizing the map to your needs.  
To get to Map Categories:  
1. From the Map Page, press MENU|↓ to MAP CATEGORIES DRAWN|ENT.  
2. Press ↑ or ↓ to select a category or press → then press ↑ or ↓ to select  
a subcategory. Press ENT to turn it off (no check) or on (checked.)  
3. To return to the last page displayed, press EXIT|EXIT.  
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Map Menu (left); Map Categories Drawn Menu (right).  
Map Orientation  
By default, this receiver shows the map with north always at the top of  
the screen. This is the way most maps and charts are printed on paper.  
In Track Up mode, map shows "N" and arrow to indicate north.  
Map orientation is shown in north up (left) and track up (right).  
This is fine if you're always traveling due north. What you see to your  
left corresponds to the left side of the map, to your right is shown on the  
right side of the map, and so on. If, however, you travel any other  
direction, the map doesn't line up with your view of the world.  
To correct this problem, a track-up mode rotates the map as you turn.  
Thus, what you see on the left side of the screen should always be to  
your left, and so on.  
Another option is course-up mode, which keeps the map at the same  
orientation as the initial bearing to the waypoint. When either the  
track-up or course-up mode is on, an "N" shows on the map screen to  
help you see which direction is north.  
To change map orientation: from the Map Page, press MENU|↓ to MAP  
ORIENTATION|ENT. Use ↑ or ↓ to select the desired mode, then press ENT.  
Press EXIT|EXIT to return to the page display.  
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Map Menu (left) Map Orientation menu with the North Up map  
orientation option selected (right).  
NavionicsCharts  
Your Unit can display Navionicselectronic charts on MMCs. They  
work just like a MapCreate custom map on a MMC.  
Entrance to Chesapeake Bay in a MapCreate 6 custom map with a 10-  
mile zoom (left). The same position on Navionics chart at  
11.15-mile zoom (center) and with a 5.56-mile zoom (right).  
To display a Navionics chart:  
1. Install the Navionics MMC in the memory card compartment and  
turn on the unit. (For full card install instructions, see Sec. 2.)  
WARNING:  
You should never format the MMC containing your  
Navionics chart. Formatting the MMC will permanently  
erase the chart from the card.  
2. From the Map Page, press MENU|↓ to MAP DATA|ENT|→ to NAVIONICS  
MAP CHOICE|ENT. Use ↑ or ↓ to select the Map Name, then press  
ENT|EXIT|EXIT.  
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These figures show menu sequence (from left to right) for selecting a  
Navionics chart for the South Chesapeake Bay area.  
3. To turn off a Navionics chart, From the Map Page, press MENU|↓ to  
MAP DATA|ENT|→ to NAVIONICS MAP CHOICE|ENT. Use ↑ or ↓ to select  
LOWRANCE, then press ENT|EXIT|EXIT.  
Port Information  
Navionics charts contain Port Services information, represented by anchor  
icons on the map display. An example is displayed in the following figure.  
To view Port Services information:  
1. Use the arrow keys to move the cursor over a Port Services icon.  
When selected, a pop-up name box appears.  
2. Press WPT to display the Port Services Information screen.  
The Port Services information screen has two windows. The top window  
lists the various service categories. The lower window lists the detailed  
services available in each basic category.  
Port Services  
icons  
Pop-up  
name box  
Cursor lines  
Navionics chart showing Port Services icon selected by cursor.  
3. To scroll through the Service Categories window: press ENT then use  
↑ or ↓ to see the types of services available. As you highlight a different  
category, the list in the lower window changes. To return to the Map  
Page, press EXIT|EXIT.  
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4. The General Services category includes a long list of items in the  
Detailed Services window. To scroll through the Detailed Services  
window: from SERVICE CATEGORIES, press ↓ to DETAILED SERVICES|ENT, then  
use ↑ or ↓ to read the list of available services. To return to the Map  
Page, press EXIT|EXIT. To return to the top service category window,  
press ENT|↑.  
Port Services information screens.  
Tidal Current Information  
Navionics charts contain Tidal Current information,  
represented at large zoom ranges by a box icon with  
the letter "C." The icon stands for a Tidal Current  
Station location.  
When you zoom in to a sufficiently small zoom range, the icon itself  
becomes an animated arrow showing tidal current velocity and  
direction for the selected tidal station. At larger zoom ranges, you can  
select the boxed "C" icon and it becomes an animated arrow with a pop-  
up name box. An example is displayed in the following figure.  
To view Tidal Current information:  
1. Use the arrow keys to move the cursor over a Tidal Current Station  
icon. When selected, a pop-up name box appears.  
2. Press WPT to display the Tidal Current Information screen.  
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Tidal  
Current  
Station icon  
in animated  
mode  
Pop-up  
name box  
Cursor lines  
Navionics chart showing Tidal Current Station icon selected by cursor.  
In this example, the tidal current is in flood but it's about to enter the  
slack water stage. The current is flowing to the west at 0.1 mph.  
Current Information screen.  
The Tidal Current Information screen displays daily tidal current data  
for the station at the present time. The graph at the top of the example  
above is an approximate view of the flood and ebb pattern from  
midnight (MN), to noon (NN) to midnight (MN). The velocity scale at  
the top left side of the graph changes dynamically based upon the  
maximum velocity of the current for that day.  
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Slack water, the period of little or no current, is represented by the  
Slack Water Line (SWL). The flood appears above the SWL and the ebb  
appears below the SWL.  
You can look up tidal current data for other dates by changing the  
month, day and year selection boxes. To select another date:  
1. Use → and ← to highlight month, day or year, then press ENT.  
2. Use ↑ and ↓ to select the desired month, day or year, then press ENT.  
To clear the information screen, press EXIT.  
Tide Information  
Navionics  
charts  
contain  
Tidal  
Information,  
represented at large zoom ranges by a box icon with  
the letter "T." The icon stands for a Tidal Station  
location. An example is displayed in the figure on the  
right.  
When you zoom in to a sufficiently small zoom range, the icon itself  
becomes an animated gauge showing a rising or falling tidal height for  
the selected station. At larger zoom ranges, you can select the boxed "T"  
icon and it becomes an animated gauge with a pop-up name box. An  
example is displayed in the following figure.  
To view tide information:  
1. Select a Tide Station icon: use the arrow keys to move the cursor over  
an icon. When it is selected, a pop-up name box appears.  
2. After selecting the Tide Station icon, press WPT to display the Tide  
Information screen.  
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Cursor line  
Pop-up  
name box  
Tide Station  
icon  
Navionics chart showing Tide Station icon selected by cursor.  
In the example above, the tide is at 2.8 feet and falling,  
as shown by the down arrow at the top of the icon.  
Tide Information screen.  
The Tide Information screen displays daily tidal data for the station at  
the present time. The graph at the top of the screen is an approximate  
view of the tidal range pattern for the day, from midnight (MN), to  
noon (NN) to midnight (MN). The dotted line across the graph is the  
Mean Lower Low Water line (MLLW).  
The height scale on the top right side of the graph changes, based upon  
the maximum range of the tide for that day. The MLLW line also  
adjusts its position as the height scale changes.  
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You can look up tidal data for other dates by changing the month, day  
and year selection boxes. To select another date:  
1. Use → and ← to highlight month, day or year, then press ENT.  
2. Use ↑ and ↓ to select the desired month, day or year, then press ENT.  
To clear the information screen, press EXIT.  
Pop-up Help  
Help is available for virtually all of the menu labels on this unit. By  
highlighting a menu item and leaving it highlighted for a few seconds, a  
"pop-up" message appears that describes the function of the menu item.  
This feature is on by default.  
To set up Popup Help: Press MENU|MENU|↓ to SYSTEM SETUP|ENT|↓  
to POPUP HELP. With the option highlighted, press ENT to check it (turn  
on) or uncheck it (turn off.) After the option is set, press EXIT|EXIT to  
return to the page display.  
System Setup menu (left) with Pop-up Help command highlighted. The  
example on the right shows the Pop-up Help message for the Screen  
command, located on the Map Menu.  
Reset Options  
To reset all features to their factory defaults:  
Press MENU|MENU|↓ to SYSTEM SETUP|ENT|↓ to RESET OPTIONS|ENT|← to  
YES|ENT.  
NOTE:  
Reset Options does not erase any waypoints, routes, icons, plot trails  
or sonar logs.  
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Reset Options command (left)  
and the Reset Options Menu (right).  
Screen Contrast and Brightness  
To access the Screen menu, press MENU|MENU|ENT.  
Once in the Screen menu:  
To adjust the display's contrast:  
The CONTRAST slider bar is already selected. Press → or ← to move the  
bar. The left end of the scale is minimum contrast; the right end is  
maximum contrast.  
Screen Command (left) and Screen Menu with Contrast selected, (right).  
To adjust the display's brightness:  
Press ↓ to BRIGHTNESS. Press → or ← to move the bar. The left end of the  
scale is minimum contrast; the right end is maximum contrast.  
To adjust the screen's display mode:  
Press ↓ to DISPLAY MODE|ENT| press ↑ or ↓ to select mode|EXIT.  
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Display Mode menu.  
Set Language  
This unit's menus are available in 10 languages: English, French,  
German, Spanish, Italian, Danish, Swedish, Russian, Dutch and  
Finnish. To select a different language:  
1. Press MENU|MENU|↓ to SYSTEM SETUP|ENT.  
2. Press ↓ to SET LANGUAGE|ENT.  
3. Use ↓ or ↑ to select a different language and press ENT. All menus  
now appear in the language you selected.  
Set Local Time  
Using the correct local time setting is handy when estimating local  
arrival time while navigating. Also, the time and date are saved when a  
waypoint is created.  
To access the Set Local Time menu, you must first acquire your  
position. Once that is done: press MENU|MENU|↓ to SYSTEM SETUP|ENT|↓ to  
SET LOCAL TIME|ENT.  
Once in the Time Settings menu:  
To set Local Time: Press ENT. Press ↑ or ↓ to change the first character,  
then press → to move the cursor to the next character. Repeat until the  
time is correct, then press ENT.  
To set the Month: Press ↓ to MONTH|ENT. Press ↑ or ↓ to select the month,  
then press ENT.  
To set the Day: Press → to DAY|ENT. Press ↑ or ↓ to select the day, then  
press ENT.  
To set the Year: Press → to YEAR|ENT. Press ↑ or ↓ to select the year, then  
press ENT.  
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You also may switch the Time Format between 12 and 24 hour options.  
The Date Format also may be modifed between three options:  
Month/Day/Year, Day/Month/Year and Year/Month/Day.  
Time Settings Menu.  
At the top right of the menu is the CONFIG DST button. This feature  
allows your unit to automatically adjust with the time change caused  
by Daylight Saving Time (you should only have to set it once). You may  
select which set of rules matches DST in your region, or simply accept  
the default.  
Once you have each field set the way you want, press EXIT repeatedly  
until you return to the previous page.  
Show WAAS Alarm  
When the signal is available, your unit will automatically use WAAS to  
boost the accuracy of the position fix. When the WAAS signal is lost or  
acquired, an alarm message appears. Since the U.S. government is still  
developing the WAAS system, it's not unusual for a GPS/WAAS  
receiver to frequently lose and reacquire its lock on a WAAS satellite.  
That can result in the alarm repeatedly going on and off. You have the  
option of turning off the WAAS Acquired/Lost alarm without affecting  
how the unit uses WAAS. Here's how:  
1. Press MENU|MENU|↓ to GPS SETUP|ENT|↓ to SHOW WAAS ALARM.  
2. With the option highlighted, press ENT to uncheck it (turn off) or  
check it (turn on). After the option is set, press EXIT|EXIT to return to  
the page display.  
3. You can return to this command and press ENT again to turn the  
feature on.  
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Software Version Information  
From time to time, Lowrance updates the operating system software in  
some of its products. These software upgrades are usually offered to  
customers as free downloads from our web site, www.lowrance.com.  
These upgrades make the unit perform better or introduce a new  
feature or function. You can find out what software version is running  
in your Unit by using the Software Information command.  
Software Information command (left); Software Information (right).  
1. Press MENU|MENU|↓ to SYSTEM SETUP|ENT|↓ to SOFTWARE INFO|ENT.  
2. Read the information displayed on the screen.  
3. To return to the last page displayed, press EXIT|EXIT|EXIT.  
Sounds and Alarm Sound Styles  
Sounds triggered by key strokes and alarms can be adjusted:  
You first press MENU|MENU|↓ to SOUNDS|ENT.  
Sounds command (left); The Sounds menu (right).  
Once in the Sounds menu  
To set Key Press Sounds: With the option highlighted, press ENT to  
check it (turn on) or uncheck it (turn off). After the option is set, press  
EXIT|EXIT to return to the page display.  
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To set Alarm Sounds: Press ↓ to ALARM SOUNDS. With the option  
highlighted, press ENT to check it (turn on) or uncheck it (turn off).  
After the option is set, press EXIT|EXIT to return to the page display.  
To set Alarm Volume: Press ↓ to VOLUME. Press → or ← to move the bar.  
The left end of the scale is low volume; the right end is high volume.  
After the option is set, press EXIT|EXIT to return to the page display.  
To set Alarm Style: Press ↓ to ALARM STYLE|ENT. Press ↑ or ↓ to change  
the style, then press ENT. After the option is set, press EXIT|EXIT to  
return to the page display.  
Track Smoothing  
This is a factory setting on the GPS Setup menu that should always be  
left on. When stopped or traveling at slow speeds (such as walking or  
trolling), Track Smoothing prevents wandering of trails, the steering  
arrow, compass rose and a map in track-up mode.  
Track Smoothing option, turned on.  
Trail Options  
There are several options you can use with trails. Some affect all trails,  
other options can be applied to a particular trail. You can change the  
way trails are updated and the way they’re displayed. Trails also may  
be hidden, created or deleted in the trail menu.  
General Trail Options  
To access the Trails Menu:  
Press MENU|MENU|↓ to MY TRAILS|ENT.  
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My Trails command (left); Trails Menu (left); Trail Options (right).  
Delete All Trails  
To remove all of the trails from memory: from the Trails Menu, press →  
to DELETE ALL|ENT|← to YES|ENT.  
Update Trail Option  
This menu lets you change the way the trail updates occur.  
WARNING:  
If you uncheck the Update Trail option, automatic trail  
creation and recording will be turned off. You must turn  
it back on to record trails. The default setting is on.  
From the Trails Menu, press → to OPTIONS|ENT. With UPDATE ACTIVE TRAIL  
highlighted, press ENT to check it (turn on) or uncheck it (turn off).  
Update Trail Criteria (Auto, Time, Distance)  
The options are automatic, time, or distance. When it's in the default  
automatic mode, the unit doesn't update the plot trail while you're  
traveling in a straight line. Once you deviate from a straight line, the  
unit "drops" a plot point (trail waypoint) onto the trail. This conserves  
plot trail points. If a plot trail uses all of the available points allotted to  
it, the beginning points are taken away and placed at the end of the trail.  
From the Trails Menu, press → to TRAIL OPTIONS|ENT|↓ to UPDATE CRITERIA.  
Press ↑ or ↓ to select criteria type|ENT. If you selected Time, the  
Update Rate data entry box appears on the menu. If you selected  
Distance, the Update Distance data entry box appears on the menu.  
Trail Update Rate (Time, Distance)  
You can update a trail by time, with a range from 1 second to 9999  
seconds; the default is 3 seconds. You can update by distance, with a  
range from 0.01 mile/nm/km to 9.99 mile/nm/km; the default is 0.10  
miles.  
With one of the Update Criteria selected, use the cursor arrows to  
highlight either the UPDATE TIME or UPDATE DISTANCE data entry boxes and  
press ENT. Press ↑ or ↓ to change the first character, then press → to  
the next character and repeat until the entry is correct. Press EXIT to  
return to the Trail Options Menu.  
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Update Time Rate setting (left) and Update Distance setting (right).  
Specific Trail Options  
Delete Trail  
To delete a specific trail: From the Trails Menu, press ↓ to Saved  
Trails|ENT. Select a trail and press ENT. The Edit Trail menu appears as  
seen in the following figure. Press → to DELETE TRAIL|ENT|← to YES|ENT.  
Edit Trail menu.  
New Trail  
To manually start a new trail in the Trails Menu make sure NEW TRAIL is  
highlighted and press ENT|EXIT.  
Trail Visible/Invisible and Other Trail Options  
The name, maximum number of points in the trail, activity, and  
visibility are all changed on the Edit Trail menu screen. The Active  
setting determines whether or not the unit is recording new points for a  
particular trail.  
On the Edit Trail menu, press ↓ or ↑ to highlight the section you wish  
to change, then press ENT. Make your changes, then press EXIT to close  
this menu.  
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Units of Measure  
This menu sets the speed and distance (statute or nautical miles,  
meters), depth (feet, fathoms, or meters), temperature (degrees  
Fahrenheit or Celsius) and heading (true or magnetic) units. To change  
the units:  
Press MENU|MENU|↓ to SYSTEM SETUP|ENT|ENT.  
System Setup Menu (left); Units of Measure Menu (right).  
To set Speed/Distance Unit of Measure: Press ↑ or ↓ to change the  
Speed/Distance, then press ENT. After the option is set, press  
EXIT|EXIT|EXIT to return to the page display.  
To set Heading: Press ↑ or ↓ to change the heading type, then press  
ENT. After the option is set, press EXIT|EXIT|EXIT to return to the page  
display.  
To set Depth: Press → to DEPTH. Press ↑ or ↓ to change the heading  
type, then press ENT. After the option is set, press EXIT|EXIT|EXIT to  
return to the page display.  
To set Temperature: Press → ↓ to TEMPERATURE. Press ↑ or ↓ to change  
the heading type, then press ENT. After the option is set, press  
EXIT|EXIT|EXIT to return to the page display.  
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Section 9:  
Searching  
NOTE:  
The background map loaded in your unit lets you search for U.S.  
Interstate Highway exits and exit services, as well as some land  
features, including cities and lakes. For a full set of searchable land  
features, including landmarks, streets, addresses and Points of  
Interest, you must load your own high-detail custom map produced  
with our MapCreate 6 software.  
The unit's varied search functions all begin with either the Find  
Waypoint menu or the Map Page menu. Press WPT and the Find  
Waypoint menu appears for waypoints and Points of Interest (POI).  
From the Map Page, press MENU and the Map Page menu appears for  
streets, addresses and highway exits.  
Find Waypoint menu (left) and Map Page menu (right).  
NOTE:  
You can search for items after the unit has acquired a position, or  
while using it in the simulator mode. Distance and bearing to the  
selected item will be calculated from the unit's current position, or  
the last known position. You can look up items by name, or search  
for the item nearest to you.  
Find Addresses  
1. From the Map Page, press MENU|↓ to FIND ADDRESS|ENT.  
2. Press ENT to search in the Address field.  
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Find Address Menu.  
3. To enter an address, press ↑ or ↓ to change the first number, then  
press → to move the cursor to the next number and repeat until the  
number is correct, then press ENT.  
4. To enter a street name, press ↓ to STREET|ENT. There are two options:  
A. You can spell out the name in the top selection box. Press ↑ or ↓ to  
change the first letter, then press → to move the cursor to the next  
letter and repeat until the name is correct, then press ENT|ENT. B. Or  
jump down to the lower selection list by pressing ENT, then press ↓ or ↑  
to select a street name from the list and press ENT. The street name you  
selected is now in the street field.  
Find Address menu (left); Find Street menu (center) with Find By  
Name field active; street name entry complete (right).  
5. To enter a city name, press ↓ to CITY|ENT. You will be asked if you want  
to find addresses only within a particular city. This option is designed  
to limit an address search to a single city if necessary.  
If you select yes, there are two options: A. You can spell out the city  
name in the top selection box. Press ↑ or ↓ to change the first letter,  
then press → to move the cursor to the next letter and repeat until the  
name is correct, then press ENT|ENT. B. Or jump down to the lower  
selection list by pressing ENT, then press ↓ or ↑ to select a city name  
from the list, then press ENT. The city name you selected is now in the  
city field.  
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NOTE:  
We recommend you do not enter a city name unless the list is too  
long to search through. The unit can actually search quicker when  
you don’t enter a city name.  
Find city field (left); search in particular city only option (center); Find  
City by name (right).  
6. When the necessary search fields are filled in, press ↓ to FIND  
ADDRESS|ENT. Your unit asks you to wait while it searches for the  
address. (If an address is not in the database, a message appears  
saying the address could not be found.)  
7. The unit will display a list of addresses. If the address you are  
looking for is highlighted at the top of the list, press ENT. If not, use ↓  
and ↑ to select the correct address from the list, then press ENT. The  
Map Page will then appear with the location selected by the cursor. (In  
the example below, we are looking for 12303 East 11th Street in Tulsa,  
not 11th Court, so we had to scroll down the list to select the right one.)  
Address search result list (left); Map Page showing  
location of the address on the map, highlighted by cursor (center).  
After the address is located, you can navigate to it (right).  
8. To navigate to the address, press MENU|ENT|EXIT and your unit will  
begin showing navigation information to the address pointed out by the  
cursor. If you are only looking up an address (not navigating), just  
press EXIT to return to the previous page.  
Tip:  
If the address also happens to be an item in the Point of Interest  
database, you can look up the item's phone number in the Waypoint  
Information list. With the address location selected by the cursor on  
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the map, press WPT. The POI's Waypoint Information window  
appears, with the Go To Waypoint command highlighted. If you  
want to go ahead and navigate to the POI address, just press  
ENT|EXIT.  
Map Page showing location of the address on the map, highlighted by  
cursor (left). This address is a business in the POI database, so you can  
display the POI information window, then navigate to it (center). This  
address is not in the POI database, so the Waypoint key will not  
display any information for this address (right).  
Find Any Item Selected by Map Cursor  
On the Map Page: with a POI or map feature selected by the cursor  
press WPT. To return to the previous page, press EXIT.  
A POI selected by the cursor (left); POI information screen (right).  
NOTE:  
Since the Go To Waypoint command is highlighted, you can  
navigate to the selected POI by pressing ENT|EXIT while in the POI  
Waypoint Information screen.  
Find Interstate Highway Exits  
1. From the Map Page, press MENU|↓ to HIGHWAY EXITS|ENT, which calls  
up the FIND EXIT menu.  
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Find Highway Exits command (left) and Find Exit menu (right).  
2. First, select a highway name by pressing ENT, which calls up the FIND  
BY NAME menu. There are two highway search options: A. You can spell  
out the highway name in the top selection box. Press ↑ or ↓ to change  
the first letter, then press → to move the cursor to the next letter and  
repeat until the name is correct, then press ENT|ENT. B. Or jump down  
to the lower selection list by pressing ENT, then press ↓ or ↑ to select a  
highway from the list, then press ENT.  
Find By Name menu.  
3. Once you have selected a highway name you can then select an exit.  
Press ↓ to switch to the Exit List, then press ↓ or ↑ until you highlight  
the exit, then press ENT.  
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Find Exit menu, with an exit selected in the Exit List.  
4. In the Exit Information screen you have two choices. A. Press ENT to  
navigate or "go to" the exit. B. Press →|ENT to find the exit on the map.  
Go To Exit option (left); Find On Map option (right).  
Tip:  
You can also look up some additional information on the Exit  
Services located near this exit. Press ↓ to SERVICES then ↓ or ↑ to  
select Service Name|ENT.  
Exit Information screen (left); general location  
and amenities information (right).  
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Find Map Places or Points of Interest (POI)  
1. Press WPT, press ↓ or ↑ to select a map place or POI category, then  
press ENT. (To narrow your search, press → then press ↓ or ↑ to select a  
subcategory before pressing ENT.) You will be given two options; SEARCH  
BY NAME or BY NEAREST.  
Find Waypoint menu with Lodging POI category selected (left) and  
with the RV Parks subcategory selected (right).  
2. Search by nearest POI. Press ↓|ENT. The FIND BY NEAREST menu will show  
a calculating screen, then a list of the nearest POI's will appear. Press ↓  
or ↑ to the selected POI and press ENT to call up the POI's Waypoint  
Information screen.  
Find by Nearest (left); Calculating screen (center); POI list, (right).  
3. Search by name of POI. Press ENT. There are two options: A. You can  
spell out the POI in the top selection box. Press ↑ or ↓ to change the  
first letter, then press → to move the cursor to the next letter and  
repeat until the name is correct, then press ENT|ENT. B. Or jump down  
to the lower selection list by pressing ENT, then ↓ or ↑ to select a POI  
from the list, then press ENT to call up the POI's Waypoint Information  
screen.  
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Find by Name option (left); Find by Name menu (right).  
4. When the POI's Waypoint Information screen is displayed, you can  
choose to GO TO the POI waypoint by pressing ENT or find it on the map  
by pressing→|ENT.  
Go To Waypoint POI option (left); Find on Map POI option (right).  
Find Streets or Intersections  
Find a Street  
1. From the Map Page, press MENU|↓ to FIND STREETS|ENT and the Find  
Streets Menu appears.  
Find Streets command (left); Find Streets menu (right).  
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2. You must first fill in a street name in the First Street dialog box. Press  
ENT to display the FIND BY NAME menu. There are two options: A. You can  
spell out the street in the top selection box. Press ↑ or ↓ to change the  
first letter, then press → to move the cursor to the next letter and  
repeat until the name is correct, then press ENT|ENT. B. Or you can jump  
down to the lower box and pick a street from the selection list. Press  
ENT, then press ↓ or ↑ to select a street from the list and press ENT.  
Find Street By Name menu. Spell out name in  
the top box, or select from the list in the lower box.  
3. The Find Streets menu reappears with the street you're searching for  
in the First Street box. (In this example, it's 80th Street.) To search for  
that street, press ↓ to find FIRST STREET |ENT. A message appears asking  
you to wait while the unit finds the street. When the Streets Found list  
appears, press ↑ or ↓ to select the street you are searching for and press  
ENT.  
The Find Streets menu (left) with the Find First  
Street command highlighted. Streets Found list (right).  
4. The Map Page appears, with the cursor pointing to the found street.  
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Map Page showing results of a street search.  
The cursor points to the located street.  
If you want to navigate to the found street at the cursor location, just  
press MENU|ENT|EXIT.  
Find an Intersection  
You must enter one street in the First Street dialog box and enter the  
next street in the Second Street dialog box.  
1. From the Map Page, press MENU|↓ to FIND STREETS|ENT and the FIND  
STREETS Menu appears.  
2. You must fill in a street name in the First Street dialog box. Press  
ENT to display the FIND BY NAME menu. There are two options: A. You can  
spell out the street in the top selection box. Press ↑ or ↓ to change the  
first letter, then press → to move the cursor to the next letter and  
repeat until the name is correct, then press ENT|ENT. B. Or you can jump  
down to the lower box and pick a street from the selection list. Press  
ENT, then press ↓ or ↑ to select a street from the list and press ENT.  
3. The Find Streets menu reappears with the street you're searching for  
in the First Street box. (In this example, it's 80th Street.)  
4. Now fill in the second street. Press ↓ to SECOND STREET|ENT and the  
FIND BY NAME menu appears again. Just like before, there are two  
options: A. You can spell out the second street in the top selection box.  
Press ↑ or ↓ to change the first letter, then press → to move the cursor  
to the next letter and repeat until the name is correct, then press  
ENT|ENT. B. Or you can jump down to the lower box and pick the second  
street from the selection list. Press ENT, then press ↓ or ↑ to select a  
street from the list and press ENT.  
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5. The Find Streets menu reappears with the first and second street  
dialog boxes filled in. In this example, we selected 71st Street as our  
second street. You could now use similar techniques to select a city or  
Zip code, but your search will probably be faster if you leave those  
boxes blank. (You can specify a city and/or Zip code later on to narrow  
the search, if the resulting list is too long.)  
Find Intersection command highlighted (left) and  
Working message (center). The Intersections Found list (right).  
6. To search for the intersection of the two streets, press ↓ to FIND  
INTERSECTION|ENT. A message appears asking you to wait while the unit  
finds the intersection. When the INTERSECTIONS FOUND list appears, press ↑  
or ↓ to select the intersection you are searching for and press ENT. (In  
the example on the previous page, we selected the intersection of SW  
80th Street and SW 71st Avenue in Miami, Fla.)  
7. The Map Page appears, with the cursor pointing to the found  
intersection. The intersection in our example is shown below.  
Map Page showing results of an intersection search.  
The cursor points to the located intersection.  
If you want to navigate to the found intersection, just press  
MENU|ENT|EXIT.  
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Find Waypoints  
1. Press WPT|ENT.  
2. If searching for the waypoint By Name, press ENT. If searching for the  
Nearest waypoint, press ↓ to NEAREST|ENT. (To search by name, jump to  
step 5 below.)  
Find Waypoint menu (left); Find By Nearest command (center); Find  
by Name command (right).  
3. If you're looking for nearest, the unit says it is calculating, then a list of  
waypoints appears. The location closest to you is highlighted at the top  
of the list and the one farthest from you is at the bottom of the list.  
Calculating message (left) and list of the nearest waypoints (right).  
4. To see location information on the closest waypoint, press ENT and  
the Waypoint Information screen appears. (If you wanted, you could  
select another waypoint from the list with the ↑ or ↓ keys.)  
A. To navigate to the waypoint, press ENT. (The Go To Waypoint  
command is already highlighted.) The unit will show navigation  
information to the waypoint.  
B. To find the waypoint, press ↓ to FIND ON MAP|ENT. The Map Page  
appears with the cursor highlighting the found waypoint.  
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Waypoint Information screens with the Go To Waypoint command  
selected (left) and the Find on Map command selected (right).  
To clear these menus and return to the previous page, press EXIT  
repeatedly.  
5. If you're looking by name, there are two options: A. You can spell out  
the name in the top selection box. Press ↑ or ↓ to change the first letter,  
then press → to move the cursor to the next letter and repeat until the  
name is correct, then press ENT|ENT. B. Or you can jump down to the  
lower selection list by pressing ENT, then press ↓ or ↑ to select a  
waypoint from the list, then press ENT. The waypoint information  
screen appears.  
Find By Name menu (left); Waypoint Information screen (center); The  
found waypoint is highlighted by the cursor on the Map Page (right).  
A. To navigate to the waypoint, press ENT. (Go To Waypoint  
command is already highlighted.) The unit will show navigation  
information to the waypoint.  
B. To find the waypoint, press ↓ to FIND|ENT. The Map Page appears  
with the cursor highlighting the found waypoint.  
To clear these menus and return to the previous page, press EXIT  
repeatedly.  
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Notes  
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Section 10: Supplemental Material  
Datums Used by This Unit  
WGS 1984  
Default  
Arc 1950 - Botswana  
Bermuda 1957 - Bermuda  
Arc 1950 - Burundi  
Adindan  
Bissau - Guinea-Bissau  
Bogota Observatory -  
Colombia  
Mean for Ethiopia, Sudan Arc 1950 - Lesotho  
Adindan  
Burkina Faso  
Arc 1950 - Malawi  
Arc 1950 - Swaziland  
Arc 1950 - Zaire  
Bukit Rimpah - Indonesia  
(Bangka & Belitung  
Islands)  
Adindan  
Cameroon  
Camp Area Astro -  
Antarctica (McMurdo  
Camp Area)  
Adindan  
Ethiopia  
Arc 1950 - Zambia  
Arc 1950 - Zimbabwe  
Adindan  
Mali  
Campo Inchauspe -  
Argentina  
Arc 1960 - Mean for  
Kenya, Tanzania  
Adindan  
Senegal  
Canton Astro 1966 -  
Phoenix Islands  
Ascension Island 1958 -  
Ascension Island  
Adindan  
Sudan  
Cape - South Africa  
Astro Beacon E 1945 -  
Iwo Jima  
Cape Canaveral -  
Bahamas, Florida  
Afgooye  
Somalia  
Astro DOS 71/4 - St.  
Helena Island  
Carthage - Tunisia  
Switzerland  
Ain el Abd 1970  
Bahrain  
Astro Tern Island (FRIG)  
1961 - Tern Island  
Ain el Abd 1970  
Saudi Arabia  
Chatham Island Astro  
1971; New Zealand  
(Chatham Island)  
Astronomical Station  
1952 - Marcus Island  
Anna 1 Astro 1965  
Cocos Islands  
Australian Geodetic 1966 Chua Astro  
- Australia & Tasmania Paraguay  
Antigua Island Astro  
1943; Antigua (Leeward  
Islands)  
Australian Geodetic 1984 Corrego Alegre  
- Australia & Tasmania  
Brazil  
Arc 1950; Mean for  
Botswana, Lesotho,  
Ayabelle Lighthouse -  
Djibouti  
Dabola  
Guinea  
Malawi, Swaziland, Zaire,  
Zambia and Zimbabwe  
Bellevue (IGN) - Efate &  
Erromango Islands  
Djakarta (Batavia)  
Indonesia (Sumatra)  
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European 1950  
Italy (Sardinia)  
Mahe Island  
DOS 1968  
New Georgia Islands  
(Gizo Island)  
Massawa  
Ethiopia (Eritrea)  
European 1950  
(Sicily)  
Easter Island 1967  
Easter Island  
European 1950  
Malta  
Merchich  
Morocco  
European 1950  
Ireland 1965  
Ireland  
Midway Astro 1961  
Midway Islands  
Mean for Austria,  
Belgium, Denmark,  
Finland, France, West  
Germany, Gibraltar,  
Greece, Italy,  
ISTS 061 Astro 1968  
South Georgia Islands  
Minna  
Cameroon  
Luxembourg,  
ISTS 073 Astro 1969  
Diego Garcia  
Minna  
Nigeria  
Netherlands, Norway,  
Portugal, Spain, Sweden,  
Switzerland  
Johnston Island 1961  
Johnston Island  
Montserrat Island Astro  
1958; Montserrat  
European 1950  
(Leeward Islands)  
Mean for Austria,  
Denmark, France, West  
Germany, Netherlands,  
Switzerland  
Kandawala  
Sri Lanka  
M’Poraloko  
Gabon, Nahrwan, Oman  
(Masirah Island)  
Kerguelen Island 1949  
Kerguelen Island  
European 1950  
Nahrwan  
Mean for Iraq, Israel,  
Kertau 1948  
Saudi Arabia  
Jordan, Lebanon, Kuwait, West Malaysia &  
Saudi Arabia, Syria  
Singapore  
Nahrwan  
United Arab Emirates  
European 1950  
Cyprus  
Kusaie Astro 1951  
Caroline Islands  
Naparima BWI  
Trinidad & Tobago  
European 1950  
Egypt  
L.C. 5 Astro 1961  
Cayman Brac Island  
North American 1927  
Mean for Antigua,  
European 1950  
Leigon  
Ghana  
Barbados, Barbuda,  
Caicos Islands, Cuba,  
Dominican Republic,  
Grand Cayman, Jamaica,  
Turks Islands  
England, Channel  
Islands, Ireland, Scotland,  
Shetland Islands  
Liberia 1964  
Liberia  
European 1950  
Finland, Norway  
Luzon  
Philippines (Excluding  
Mindanao)  
North American 1927  
Mean for Belize, Costa  
Rica, El Salvador,  
Guatemala, Honduras,  
Nicaragua  
European 1950  
Greece  
Luzon  
European 1950  
Iran  
Philippines (Mindanao)  
North American 1927  
Mean for Canada  
Mahe 1971  
182  
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Great Britain 1936 -  
England  
North American 1927  
Mean for CONUS  
(Continental United  
States)  
North American 1927  
Mean for CONUS (East  
of Mississippi River)  
including Louisiana,  
Missouri, Minnesota  
North American 1927  
Cuba  
Ordinance Survey  
Great Britain 1936 -  
England, Isle of Man,  
Wales  
North American 1927  
Greenland (Hayes  
Peninsula)  
North American 1927  
Mexico  
Ordinance Survey  
Great Britain 1936 -  
Scotland, Shetland  
Islands  
North American 1927  
Mean for CONUS  
(West of Mississippi  
River)  
North American 1983  
Alaska, Canada, CONUS  
Ordinance Survey  
Great Britain 1936 -  
Wales  
North American 1983  
Central America, Mexico  
North American 1927  
Alaska  
Observaorio Metereo  
1939; Azores (Corvo &  
Flores Islands)  
Pico de las Nieves  
Canary Islands  
North American 1927  
Bahamas (Except San  
Salvador Island)  
Pitcairn Astro 1967  
Pitcairn Island  
Old Egyptian 1907  
Egypt  
North American 1927  
Bahamas (San Salvador  
Island)  
Point 58  
Sweden  
Old Hawaiian  
Mean for Hawaii, Kauai,  
Maui, Oahu  
North American 1927  
Canada (Alberta, British  
Columbia)  
Santo (DOS)  
1965 Espirito Santo  
Island  
Old Hawaiian  
Hawaii  
North American 1927  
Canada (Manitoba,  
Ontario)  
Old Hawaiian  
Kauai  
Sao Braz  
Azores (Sao Miguel,  
Santa Maria Islands)  
Old Hawaiian  
Maui  
North American 1927  
Canada (New Brunswick,  
Newfoundland, Nova  
Scotia, Quebec)  
Sapper Hill 1943  
East Falkland Island  
Old Hawaiian  
Oahu  
Schwarzeck  
Nambia  
North American 1927  
Canada (Northwest  
Territories,  
Oman  
Oman  
Selvagem Grande  
Salvage Islands  
Saskatchewan)  
Ordinance Survey  
Great Britain 1936 - Mean SGS 85  
North American 1927  
Canada (Yukon)  
for England, Isle of Man,  
Scotland, Shetland  
Islands, Wales  
Soviet Geodetic System  
1985  
North American 1927  
Canal Zone  
South American 1969  
Mean for Argentina,  
Ordinance Survey  
183  
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Bolivia, Brazil, Chile,  
Colombia, Ecuador,  
Tokyo  
Korea  
South American 1969  
Guyana, Paraguay, Peru, Paraguay  
Trinidad & Tobago, and  
Venezuela  
South American 1969  
Peru  
Tokyo  
Okinawa  
South American 1969  
Argentina  
South American 1969  
Trinidad & Tobago  
Tristan Astro 1968  
Tristan da Cunha  
South American 1969  
Bolivia  
South American 1969  
Venezuela  
Viti Levu 1916  
Fiji (Viti Levu Island)  
South American 1969  
Brazil  
South Asia  
Singapore  
Wake  
South American 1969  
Chile  
Eniwetok 1960  
Marshall Islands  
Tananarive Observatory  
1925; Madagascar  
South American 1969  
Colombia  
Timbalai 1948  
Brunei, East Malaysia  
(Sabah, Sarawak)  
Wake Island Astro 1952  
Wake Atoll  
South American 1969  
Ecuador  
WGS 1972  
Tokyo  
Global Definition  
South American 1969  
Ecuador (Baltra,  
Galapagos)  
Mean for Japan, Korea,  
Okinawa  
Yacare  
Uruguay  
Tokyo  
Japan  
South American 1969  
Guyana  
Zanderij  
Suriname  
184  
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FCC Compliance  
This device complies with Part 15 of the U.S. Federal  
Communications Commission (FCC) Rules. Operation is subject  
to the following two conditions: (1) this device may not cause  
harmful interference, and (2) this device must accept any  
interference received, including interference that may cause  
undesired operation.  
Changes or modifications not expressly approved by the  
manufacturer could void the user's authority to operate the  
equipment.  
Note:  
This equipment has been tested and found to comply with the  
limits for a Class B digital device, pursuant to Part 15 of the  
FCC Rules. These limits are designed to provide reasonable  
protection against harmful interference in a residential  
installation. This equipment generates, uses and can radiate  
radio frequency energy and, if not installed and used in  
accordance with the instructions, may cause harmful  
interference to radio communications. However, there is no  
guarantee that interference will not occur in a particular  
installation. If this equipment does cause harmful interference to  
radio or television reception, which can be determined by turning  
the equipment off and on, the user is encouraged to try to correct  
the interference by one or more of the following measures:  
•
•
•
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different  
from that to which the receiver is connected.  
•
Consult the factory customer service department for help.  
185  
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Notes  
186  
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Notes  
187  
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Notes  
188  
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LOWRANCE DATABASES LICENSE AGREEMENT  
THIS IS A LEGAL AGREEMENT BETWEEN THE END-USER WHO FIRST  
PURCHASES THIS PRODUCT AS A CONSUMER ITEM FOR PERSONAL,  
FAMILY, OR HOUSEHOLD USE ("YOU") AND LOWRANCE ELECTRONICS,  
INC., THE MANUFACTURER OF THIS PRODUCT ("WE", "OUR", OR "US").  
USING THE PRODUCT ACCOMPANIED BY THIS LICENSE AGREEMENT  
CONSTITUTES ACCEPTANCE OF THESE TERMS AND CONDITIONS. IF  
YOU DO NOT ACCEPT ALL TERMS AND CONDITIONS, PROMPTLY  
RETURN THE PRODUCT WITHIN 30 DAYS OF PURCHASE. PLEASE  
RETURN USING THE ENCLOSED UPS SHIPPING LABEL AND INCLUDE:  
PROOF OF PURCHASE, NAME, ADDRESS, AND PHONE NUMBER. YOUR  
PURCHASE PRICE AND ANY APPLICABLE TAXES WILL BE REFUNDED.  
PLEASE ALLOW 4-6 WEEKS TO PROCESS YOUR REFUND.  
1. This License Agreement applies to the one or more databases that  
your product may contain. We refer to these singly as a "Database"  
and together as the "Databases." Your product may thus include the  
"WBS Database" which contains worldwide background surface  
mapping data, the "SmartMap Database" which contains inland  
mapping data, or other Databases.  
2. The Databases that your product may contain are licensed, not sold.  
We grant to you the nonexclusive, nonassignable right to use these  
Databases for supplemental navigation reference purposes, but only  
as long as you comply with the terms and conditions of this License  
Agreement. We reserve the right to terminate this license if you  
violate any aspect of this License Agreement. You are responsible for  
using official government charts and prudent navigation for safe  
travel.  
3. The Databases housed in your product are protected by the  
copyright notices appearing on the product or its screen(s). You may  
NOT modify, adapt, translate, reverse engineer, decompile,  
disassemble, rent, lease, or resell any Database, and you may NOT  
create derivative works based upon any Database or its contents.  
Any unauthorized reproduction, use, or transfer of a Database may  
be a crime and may subject you to damages and attorney fees.  
4. This License Agreement will terminate immediately without prior  
notice from us if you fail to comply with or violate any of the  
provisions of this Agreement. Upon termination, you will promptly  
return all products containing one or more Databases to us.  
5. Prices and programs are subject to change without notice.  
6. This License Agreement shall be governed by the laws of the State of  
Oklahoma and comprises the complete and exclusive understanding  
between you and us concerning the above subject matter.  
189  
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DATABASES LIMITED WARRANTY  
"We", "our", or "us" refers to Lowrance Electronics, Inc., the manufacturer of  
this product. "You" or "your" refers to the first person who purchases the  
product as a consumer item for personal, family, or household use. The  
Databases Limited Warranty applies to the one or more databases that your  
product may contain. We refer to each of these as a "Database" or together as  
the "Databases." Your product may thus include the "WBS Database" which  
contains worldwide background surface mapping data, the "SmartMap  
Database" which contains inland mapping data, or other Databases.  
We warrant to you that we have accurately compiled, processed, and  
reproduced the portions of the source material on which the Databases are  
based. However, we are under no obligation to provide updates to the  
Databases, and the data contained in the Databases may be incomplete when  
compared to the source material. WE MAKE NO EXPRESS OR IMPLIED  
WARRANTY OF ANY KIND ABOUT THE ACCURACY OF THE SOURCE  
MATERIAL ITSELF, INCLUDING BUT NOT LIMITED TO IMPLIED  
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR  
PURPOSE.  
If there is a defect in any Database, your exclusive remedy shall be, at our  
option, either a refund of the price you paid for the product containing the  
defective Database or a replacement of such product. WE WILL NOT UNDER  
ANY CIRCUMSTANCES BE LIABLE TO ANYONE FOR ANY SPECIAL,  
CONSEQUENTIAL, INCIDENTAL, OR OTHER INDIRECT DAMAGE OF  
ANY KIND.  
Some states do not allow the exclusion or limitation of incidental or  
consequential damages, so the above limitations or exclusions may not apply to  
you.  
This warranty does NOT apply in the following circumstances: (1) when the  
product has been serviced or repaired by anyone other than us; (2) when the  
product has been connected, installed, combined, altered, adjusted, or handled  
in a manner other than according to the instructions furnished with the  
product; (3) when any serial number has been effaced, altered, or removed; or  
(4) when any defect, problem, loss, or damage has resulted from any accident,  
misuse, negligence, or carelessness, or from any failure to provide reasonable  
and necessary maintenance in accordance with the instructions of the owner’s  
manual for the product.  
We reserve the right to make changes or improvements in our products from  
time to time without incurring the obligation to install such improvements or  
changes on equipment or items previously manufactured.  
This warranty gives you specific legal rights and you may also have other  
rights which may vary from state to state.  
Your remedies under this warranty will be available so long as you can show in  
a reasonable manner that the defect occurred within one (1) year from the date  
of your original purchase, and we must receive your warranty claim no later  
than 30 days after such 1-year period expires. Your claim must be  
substantiated by a dated sales receipt or sales slip.  
190  
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LOWRANCE ELECTRONICS  
FULL ONE-YEAR WARRANTY  
"We," "our," or "us" refers to LOWRANCE ELECTRONICS, INC., the manufacturer of  
this product. "You" or "your" refers to the first person who purchases this product as a  
consumer item for personal, family or household use.  
We warrant this product against defects or malfunctions in materials and workmanship,  
and against failure to conform to this product's written specifications, all for one (1) year  
from the date of original purchase by you. WE MAKE NO OTHER EXPRESS  
WARRANTY OR REPRESENTATION OF ANY KIND WHATSOEVER CONCERNING  
THIS PRODUCT. Your remedies under this warranty will be available so long as you can  
show in  
a
reasonable manner that any defect or malfunction in materials or  
workmanship, or any non-conformity with the product's written specifications, occurred  
within one year from the date of your original purchase, which must be substantiated by  
a dated sales receipt or sales slip. Any such defect, malfunction, or non-conformity which  
occurs within one year from your original purchase date will either be repaired without  
charge or be replaced with a new product identical or reasonably equivalent to this  
product, at our option, within a reasonable time after our receipt of the product. If such  
defect, malfunction, or non-conformity remains after a reasonable number of attempts to  
repair by us, you may elect to obtain without charge a replacement of the product or a  
refund for the product. THIS REPAIR, OR REPLACEMENT OR REFUND (AS JUST  
DESCRIBED) IS THE EXCLUSIVE REMEDY AVAILABLE TO YOU AGAINST US FOR  
ANY DEFECT, MALFUNCTION, OR NON-CONFORMITY CONCERNING THE  
PRODUCT OR FOR ANY LOSS OR DAMAGE RESULTING FROM ANY OTHER  
CAUSE WHATSOEVER. WE WILL NOT UNDER ANY CIRCUMSTANCES BE LIABLE  
TO ANYONE FOR ANY SPECIAL, CONSEQUENTIAL, INCIDENTAL, OR OTHER  
INDIRECT DAMAGE OF ANY KIND.  
Some states do not allow the exclusion or limitation of incidental or consequential  
damages, so the above limitations or exclusions may not apply to you.  
This warranty does NOT apply in the following circumstances: (1) when the product has  
been serviced or repaired by anyone other than us; (2) when the product has been  
connected, installed, combined, altered, adjusted, or handled in a manner other than  
according to the instructions furnished with the product; (3) when any serial number has  
been effaced, altered, or removed; or (4) when any defect, problem, loss, or damage has  
resulted from any accident, misuse, negligence, or carelessness, or from any failure to  
provide reasonable and necessary maintenance in accordance with the instructions of the  
owner's manual for the product.  
We reserve the right to make changes or improvements in our products from time to time  
without incurring the obligation to install such improvements or changes on equipment  
or items previously manufactured.  
This warranty gives you specific legal rights and you may also have other rights which  
may vary from state to state.  
REMINDER: You must retain the sales slip or sales receipt proving the date of your  
original purchase in case warranty service is ever required.  
LOWRANCE ELECTRONICS  
12000 E. SKELLY DRIVE, TULSA, OK 74128  
(800) 324-1356  
191  
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How to Obtain Service…  
…in the USA:  
We back your investment in quality products with quick, expert service  
and genuine Lowrance parts. If you're in the United States and you  
have technical, return or repair questions, please contact the Factory  
Customer Service Department. Before any product can be returned, you  
must call customer service to determine if a return is necessary. Many  
times, customer service can resolve your problem over the phone  
without sending your product to the factory. To call us, use the  
following toll-free number:  
800-324-1356  
8 a.m. to 5 p.m. Central Standard Time, M-F  
Lowrance Electronics may find it necessary to change or end our  
shipping policies, regulations, and special offers at any time. We reserve  
the right to do so without notice.  
…in Canada:  
If you're in Canada and you have technical, return or repair questions,  
please contact the Factory Customer Service Department. Before any  
product can be returned, you must call customer service to determine if  
a return is necessary. Many times, customer service can resolve your  
problem over the phone without sending your product to the factory. To  
call us, use the following toll-free number:  
800-661-3983  
905-629-1614 (not toll-free)  
8 a.m. to 5 p.m. Eastern Standard Time, M-F  
…outside Canada and the USA:  
If you have technical, return or repair questions, contact the dealer in  
the country where you purchased your unit. To locate a dealer near  
you, visit our web site, www.lowrance.com and look for the Dealer  
Locator.  
192  
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Accessory Ordering Information  
for all countries  
To order Lowrance accessories such as power cables or transducers,  
please contact:  
1) Your local marine dealer or consumer electronics store. Most quality  
dealers that handle marine electronic equipment or other consumer  
electronics should be able to assist you with these items.  
To locate  
a
Lowrance dealer near you, visit our web site,  
www.lowrance.com and look for the Dealer Locator. Or, you can consult  
your telephone directory for listings.  
2) U.S. customers: LEI Extras Inc., PO Box 129, Catoosa, OK 74015-0129  
Call 1-800-324-0045 or visit our web site www.lei-extras.com.  
3) Canadian customers can write:  
Lowrance/Eagle Canada, 919 Matheson Blvd. E. Mississauga, Ontario  
L4W2R7 or fax 905-629-3118.  
Shipping Information  
If it becomes necessary to send a product for repair or replacement, you  
must first receive a return authorization number from Customer  
Service. Products shipped without a return authorization will not be  
accepted. When shipping, we recommend you do the following:  
1. Please do not ship the knobs or mounting bracket with your unit.  
2. If you are sending a check for repair, please place your check in an  
envelope and tape it to the unit.  
3. For proper testing, include a brief note with the product describing  
the problem. Be sure to include your name, return shipping address  
and a daytime telephone number. An e-mail address is optional but  
useful.  
4. Pack the unit in a suitable size box with packing material to prevent  
any damage during shipping.  
5. Write the Return Authorization (RA) number on the outside of the  
box underneath your return address.  
6. For your security, you may want to insure the package through your  
shipping courier. Lowrance does not assume responsibility for goods  
lost or damaged in transit.  
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Visit our web site:  
Lowrance Pub. 988-0151-261  
Printed in USA 123004  
© Copyright 2004  
All Rights Reserved  
Lowrance Electronics, Inc.  
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