Lowrance electronic GPS Receiver LMS 350A User Manual

LMS-350A

INSTALLATION AND OPERATION

INSTRUCTIONS

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SONAR TABLE OF CONTENTS

INTRODUCTION ............................................................................................................................ 1

MOUNTING .................................................................................................................................... 1

POWER CONNECTIONS ............................................................................................................... 3

TRANSDUCER CONNECTIONS.................................................................................................... 4

OPTIONAL GPS MODULE INSTALLATION ................................................................................... 5

KEYBOARD BASICS ...................................................................................................................... 8

DISPLAY ......................................................................................................................................... 9

MENUS .......................................................................................................................................... 10

HELP .............................................................................................................................................. 10

WINDOWS ..................................................................................................................................... 10

VIEWING WINDOWS OPTIONS ............................................................................................... 12

MODIFYING GROUPS .............................................................................................................. 12

RESETTING ALL GROUPS ...................................................................................................... 13

SONAR OPERATION .................................................................................................................... 14

AUTOMATIC .................................................................................................................................. 14

SENSITIVITY ................................................................................................................................. 15

RANGE .......................................................................................................................................... 16

ZOOM - Automatic Operation ........................................................................................................ 17

ZOOM - Manual Operation............................................................................................................. 18

MENU - PAGE 1 ............................................................................................................................ 19

CHART SPEED ......................................................................................................................... 19

GRAYLINE® .............................................................................................................................. 19

FISH I.D. .................................................................................................................................... 20

DISPLAY CONTRAST ...............................................................................................................21

ALARMS .................................................................................................................................... 22

FISH ALARM .......................................................................................................................... 22

DEPTH ALARMS .................................................................................................................... 23

ZONE ALARM ........................................................................................................................ 24

SONAR FREQUENCY ................................................................................................................... 25

DUAL FREQUENCY OPERATION ............................................................................................ 26

MENU - PAGE 2 ............................................................................................................................ 27

ADJUST BACK LIGHT LEVEL................................................................................................... 27

BACK LIGHT ON/OFF ............................................................................................................... 27

SPEAKER VOLUME .................................................................................................................. 27

TURN DIGITAL BOX OFF ......................................................................................................... 28

CONSTRUCT DIGITAL BOX ..................................................................................................... 28

MENU - PAGE 3 ............................................................................................................................ 29

DISPLAY ZOOM BAR ................................................................................................................ 29

DISPLAY ZONE BAR................................................................................................................. 29

DIGITAL SONAR ....................................................................................................................... 30

TURN ALL SONAR OFF ........................................................................................................... 30

CHART CURSOR...................................................................................................................... 30

MENU - PAGE 4 ............................................................................................................................ 30

FASTRAK .................................................................................................................................. 31

SELECT UNITS OF MEASURE................................................................................................. 31

CLEAR DISTANCE LOG ........................................................................................................... 32

DEPTH LINES ........................................................................................................................... 32

MENU - PAGE 5 ............................................................................................................................ 33

ADJUST CHART SURFACE CLARITY ..................................................................................... 33

ADVANCED SIGNAL PROCESSING (ASP).............................................................................. 34

SYSTEM INFORMATION .......................................................................................................... 34

PRESET SONAR AND GPS ...................................................................................................... 35

MENU - PAGE 6 ............................................................................................................................ 35

ADJUST KEEL OFFSET............................................................................................................ 35

CALIBRATE SPEED .................................................................................................................. 36

BATTERY BACKUP ................................................................................................................... 37

TRANSDUCERS AND CONE ANGLES......................................................................................... 38

FISH ARCHES ............................................................................................................................... 39

SONAR TROUBLESHOOTING ..................................................................................................... 40

WINDOWS GROUP SUMMARY.................................................................................................... 44

WINDOWS SUMMARY .................................................................................................................. 47

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INTRODUCTION

The LMS-350A is a high quality, wide screen sonar with performance that

is second to none in its class. Using menu features and “soft-key”

operation, the LMS-350A is also one of the easiest-to-use sonars that

Lowrance has ever built. The wide “ClearVision” screen shows the

underwaterworldwithhighresolutionanddetail.Thedisplayandkeyboard

are also lighted for night operation. The LMS-350A also has digital depth,

boat speed, surface water temperature, and distance travelled (log)

displays (requires an optional ST-T speed/temperature sensor).

IfyoupurchaseandinstallaLGC-1GPSmodule,theLMS-350Acanshow

position and navigation information. Utilizing Rockwell's NavCoreV

technology, this GPS receiver is second to none in it's class.

MOUNTING - Bracket Mount

TheLMS-350Acanbemountedonit'sgimbalbracketorin-dashmounted.

Brackets are supplied for both configurations, however if the dash is

thicker than 1/2", a special bracket will have to be purchased to mount the

unit in the dash. You can install the LMS-350A on its bracket in any

convenient location, provided there is clearance behind the unit when it is

tilted for the best viewing angle. Holes in the bracket base allow wood

screworthrough-boltmounting.Youmayneedtoplaceapieceofplywood

on the back of thin fiberglass panels to secure the mounting hardware.

Makecertainthereisenoughroombehindtheunittoattachthepowerand

transducer cables.

FRONT

SLOT

BREAK

OUT SLOT

Youwillneedtodrillaholeinthedashforthepowerandtransducercables.

The smallest hole that will pass one power or transducer plug is one inch.

Aftertheholeisdrilled, passthetransducerconnectorupthroughthehole

first, then pass the power cable down through it.

After the cables have been routed, fill the hole with a good marine sealing

compound. Offset the bracket to cover the hole. Route the power cable

through the slot and break out one of the other slots in the bracket for the

transducer cable.

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IN-DASH MOUNTING

The LMS-350A can be installed in the dash with the supplied hardware if

the dash is 1/2" thick or less. Determining the dash thickness can be

difficult, however, if you remove a gauge from the dash, you can easilly

measure the thickness. Try this in an area that's close to the location that

you wish to install the unit, since the thickness can vary significantly in

some boats. Make certain there is clearance behind the dash for the unit

and there is enough room to tighten the bolts on both sides of the unit.

7.625"

DASH CUTOUT

.400" radius

(4 places)

Once you've determined the location for the unit, cut the hole according

to the drawing shown above. Measure carefully before cutting! After

cutting the dash, place the gasket supplied with the LMS-350A around the

unit and place the unit in the hole.

Supplied with the LMS-350A are rubber pads, bolts, washers, and cam

clamps to attach the LMS-350A to the dash. Peel the adhesive backing off

the rubber pads and place one on each side of the LMS-350A in the

location where the cam clamp will touch the back side of the dash. Using

the hardware supplied with the unit, attach the LMS-350A to the dash.

Makecertainthatthecamclampontheleftsideoftheunitispointingdown

and the cam clamp on the right side of the unit is pointing up before you

start tightening the bolts.

RUBBER PAD

BOLT

LOWRANCE

CAM CLAMP

(TURNED UP)

CAM CLAMP

(TURNED DOWN)

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POWER CONNECTIONS

The LMS-350A works from a twelve-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

problemswithelectricalinterference. Therefore, it’ssafertogoaheadand

attachthepowercabledirectlytothebattery.Ifthecableistooshort,splice

#18 gauge wire onto it. The power cable has four wires; red, black, green,

and white. Red is the positive lead, black is negative or ground. Make

certaintoattachthein-linefuseholdertotheredleadasclosetothepower

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. The LMS-350A uses a 3-amp fuse.

IMPORTANT!

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.

If you’re installing an optional speed/temperature sensor, read the speed/

temperaturesensor's installationmanualformountinginstructions.Route

the sensor’s cable to the LMS-350's power cable and plug it into the

connector marked “SPEED/TEMP CABLE”

TO "P" CONNECTOR

ON ACCURA

RED

WIRE

3 amp

FUSE

GPS

MODULE

BLACK

WIRE

SPEED/

TEMP

SENSOR

12 VOLT

BATTERY

NMEA

INTERFACE

LMS-350A POWER CONNECTIONS

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The white wire is for a NMEA interface. The LMS-350A sends data to

another electronic navigation devices through the white wire. It receives

data from a differential (DGPS) beacon receiver through the green wire.

If the white and green wires are not used, tape their ends so that they

cannot short.

To connect a device to the LMS-350's NMEA output (white wire), attach

a shielded, twisted pair cable from the device's NMEA intput to the

white wire on the LMS-350's power cable. Solder the ground conductor

of the twisted pair and the shield to the black wire on the power cable.

Do not connect the shield to the other device. Use the green and black

wires in the same manner to attach a DGPS recevier's output to the

LMS-350's input (green wire). See the other instrument's manual and

the NMEA section in this manual for more information.

TRANSDUCER CONNECTIONS

The LMS-350A has dual frequency capability. It can operate at 50 or

192 kHz, separately, or at the same time. The connection diagram

below shows the proper method to attach the transducers to the LMS-

350A. See the transducer owner’s manual for transducer installation

instructions. If dual frequency (simultaneous) operation is desired, a 50

kHz transducer and the MY-2 transducer adapter cable must be pur-

chased separtately.

See page 18 for more information on dual frequency operation.

DUAL

FREQUENCY

"T" CONNECTOR ON

LMS-350A

TRANSDUCER

ADAPTER

CABLE

SINGLE FREQUENCY

"T" CONNECTOR ON

LMS-350A

(MY-2)

192 kHz

50 kHz

TRANSDUCER

192 kHz or 50 kHz

TRANSDUCER

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OPTIONAL GPS MODULE INSTALLATION

The GPS module can be installed on a flat surface or (with the supplied

adapter) on a pole. Mount the module in an area that guarantees a

clear view of the sky at all times. In order for the module to receive the

signals from the satellites, it must not be obstructed. An ideal location is

on a cabin roof, or deck. The gunnels also make a good location.

Attaching the pole mounting adapter lets you install the module on a

one inch mast. However, for lightning protection, the antenna shouln't

be the highest part of the boat.

Surface Mounting - With Access

If you have access underneath the mounting surface, use the gasket

supplied with the GPS module as a template. Drill four 5.5 mm (7/32")

holes and one 17 mm (11/16") hole for the module's cable. Attach the

cable to the module and pass it down through the hole in the gasket and

the mounting surface. Use 5 mm screws, flat washers, and lock

washers to fasten the GPS module to the mounting surface. Route the

cable to the LMS-350A.

5.5 mm (7/32")

Hole

(4 places)

17mm

(11/16")

Hole

GASKET

DECK

5 MM SCREWS

CABLE

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Surface Mounting - Without Access

If you don't have access to the back side of the mounting surface, use

the "cleats" supplied with the LMS-350A. (Note: This is assuming you

can "snake" the module's cable to a location that is accessable. A hole

will still need to be drilled in the mounting surface for the cable.) Using

the gasket as a template, mark and drill the 17 mm (11/16") hole for the

cable. Attach the cable to the module and drop the other end of the

cable through the gasket and down the hole. Place the module on the

gasket. Slide the "cleats" onto each end of the module and (using the

cleats as templates) mark four holes for 5 mm (#10) mounting screws.

Drill the holes, then replace the cleats on the module and fasten them to

the mounting surface with 5 mm (#10) screws. Route the cable to the

LMS-350A.

"CLEAT"

MARK AND

DRILL FOUR

PLACES

GPS MODULE

"CLEAT"

GASKET

CABLE

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Pole Mount

First, thread the pole mounting adapter onto the mounting pole or

ratchet base. Align the pole mounting adapter so the module will face

the bow of the boat. Install and tighten the set screw into the pole

mounting adapter and tighten it securely. This should prevent the GPS

module from unscrewing from the pole. Place the gasket onto the pole

mounting adapter. Now attach the cable to the GPS module and pass

the cable through the gasket, pole mounting adapter, and pole. Set the

GPS module on top of the pole mounting adapter and align the four

threaded holes in the module with the holes in the pole mounting

adapter. Using the four stainless steel 5 mm screws and lock washers

supplied with the LMS-350A, attach the pole mounting adapter to the

GPS module. This completes the assembly.

GPS MODULE

POLE

MOUNTING

ADAPTER

SET

POLE

SCREW

If the pole or mast you're using isn't hollow or if the hole in the middle of

the pole is too small for the connectors, use the cable mounting adapter

supplied with your unit. Thread the cable mounting adapter into the

GPS pole mounting adapter. Then thread the pole into the cable mount-

ing adapter. Route the cable down the outside of the pole.

GPS MODULE

CABLE

MOUNTING

ADAPTER

POLE

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LMS-350A

1 2 3

LOWRANCE

SENS

RANGE

ZOOM

AUTO

4 5 6

7 8 9

CLR

ENT

WAYPT

EVENT

MAN

MARKER OVERBOARD

OFF

SONAR

GPS

PLOTTER WINDOWS

KEYBOARD

The keyboard has keys arranged in a vertical column on the left plus a

horizontal row at the bottom. A ten-key pad and arrow keys on the right

side of the screen lets you enter and change data on the screen. The keys

in the left column are used for sonar and menu selections. The menu key

inthebottomleftcornerofthekeyboardactivatesthefirstmenupage. The

keysalongthebottomofthescreenareusedtoswitchbetweenthesonar,

optional GPS, and windows modes.

SONAR - Press this key to switch to the sonar display.

GPS - The GPS navigation displays show when you press this key.

PLOTTER - Press this key to show the GPS Plotter display.

WINDOWS - This key gives you access to the windows mode, which lets

you customize displays.

SENS - Press this key to adjust the unit’s sonar sensitivity.

RANGE - This key lets you adjust the sonar's range.

ZOOM-TheLMS-350Agivesyou2Xand4Xzoomcapabilitywiththiskey.

AUTO - This turns the automatic feature off and on.

WAYPT - Press this key to save and recall waypoints.

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WAYPT QUICK SAVE - Pressing this key instantly saves your position.

MENU-Pressthiskeytoshowthemenusandgainaccesstomostfunctions.

CLR - This key clears menus and erases entries from the screen.

ENT - This key is used to enter numbers and make selections.

ARROW KEYS - These keys are used to make menu selections and to

move objects on the screen.

ON - The ON key turns the LMS-350A on.

OFF - Press and HOLD the Off key to turn the LMS-350A off.

DISPLAY - General

The lights are turned on for approximately ten seconds when the LMS-

350A is first turned on. Menus appear at the same time. To keep the lights

on, press the key adjacent to the Light label. It controls the backlighting

used on the display and keyboard. If you don’t want the lights on, wait ten

seconds and the lights will automatically turn themselves off. The menus

will also disappear after ten seconds, or you can turn them off by pressing

the CLR key on the left side of the zero (0) key.

The Metric label at the top of the screen works the same way. Press the

key adjacent to the Metric label to change the depth from feet to meters.

This also changes the temperature display to degrees Celsius, speed to

knots, and log to kilometers.

TheDisplaymenuontherightsideofthescreenletyouadjustthedisplay’s

contrast for the best viewing angle. Pressing the left arrow key decreases

the contrast, the right arrow increases it. After setting the contrast for the

best viewing angle, press the

CLR key to erase the menu or

wait approximately ten sec-

onds and it will automatically

erase. See the Display Con-

trast section formore informa-

tion on this feature.

When the LMS-350A is first

turned on, the display will ap-

pear similar to the one at left.

The word “AUTOMATIC” in

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the upper left corner of the display indicates the automatic feature is on.

The digital bottom depth also showsin this box.

MENUS

The LMS-350A uses menus extensively to guide you through the func-

tions and features of the unit. The menu key accesses many of these

features, allowing you to customize the unit to your particular needs and

waterconditions.Althoughyou

may have to leave one menu

andenteranothertoreachthe

desired function, all you have

to do is press the key next to

the "More" label to select the

next menu. To return to the

sonar screen, simply press

the key next to the "Exit" label

or press the CLR key.

HELP

An extremely useful feature incorporated into the LMS-350A series is the

Help menus. Virtually every feature has a help menu label that, when

pressed, gives one or more pages of text describing how to use that

feature. Forexample, pressingtheAUTOkeybringsupamenulettingyou

switch the unit into or out of the automatic mode. A help label also appears

on the screen. Pressing the key adjacent to the help label gives you a

description of how automatic works and how it affects different functions.

WINDOWS

You can change the displays on the LMS-350A by using the windows

feature. This lets you customize displays to your own fishing or boating

situations. This feature gives

you 22 different window

screens.

The screens available in the

windowsmodearedividedinto

two or more windows per

screen. Each screen of win-

dowsiscalleda“group”.Group

“A” as shown at right has the

digital displays in one window

andthesonarchartintheother.

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To use the windows feature,

firstpresstheWINDOWSkey.

A screen similar to the one

shown at left appears. The

menu on the right side of the

screenletsyouswitchbetween

the“pages”ofdisplays.These

are lettered “A” through “V”.

Group “A” shows first. Press

the down arrow key to move

forward through the screens.

Presstheuparrowkeytomove

backward.Forexample,press-

ing the down arrow key once

shows the group “B” screen.

To return to the full sonar

screen, press the “SONAR”

key.

Everyoneofthegroupscreens

can be modified to some ex-

tent. For example, press the

MENU key while group “A” is

displayed. Three new labels

appear on the display as shown above. Two of these labels are window

menus. Pressing the key adjacent to one of the “window menu” labels

gives you a menu with functions that relate only to that window. For

example, if you press the key adjacent to the window menu label on the

sonar chart window, the screen will clear and you will have a new menu

with selections such as “ADJUST CHART SPEED” and “ADJUST

GRAYLINE”. Other window

menus let you change the so-

nar frequency or turn the Fish

ID feature on.

To exit from a window menu,

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press the CLR key.

VIEWING WINDOWS

OPTIONS

To see all of the available win-

dow options, press the WIN-

DOWS key, then press the

MENU key. Now press the key

adjacent to the “MAIN MENU”

label. Finally, press the key

next to the “VIEW ALL WIN-

DOWS” label. The screen at

right appears.

The first window appears in the upper right corner of the screen. A

descriptionofthescreenshowsintheboxatthebottomofthescreen.Now

press the key adjacent to the “NEXT” label. This changes the displayed

window and description.

When you’ve finished viewing

thewindows, presstheCLEAR

key.

MODIFYING GROUPS

To modify or “customize” a

group, first press the WIN-

DOWS key, then press the

MENU key. Now press the key

adjacent to the “MAIN MENU”

labelatthebottomofthescreen.

The screen shown at right ap-

pears.

Now press the key adjacent to

the “RE-PROGRAM

GROUP” label. The screen

shown below appears.

Select the letter of the group

youwishtocustomizebypress-

ing the key adjacent to the

group’s label. If the label isn’t

shown on this page, press the

key adjacent to the “MORE”

label. In this example, the key

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next to the “GROUP A” label

was pressed. The screen

shown at the top of the next

page appears.

The depth window appears in

the upper right corner of the

screen. Pressthekeyadjacent

to the “NEXT WINDOW” label

to move through the windows.

If you reach the last window, or

if you wish to go backwards

throughthewindows,pressthe

key next to the “PREV WIN-

DOW”label.Whenthedesiredwindowisonthescreen,pressthekeynext

to the “USE WINDOW” label. The screen clears, placing the new window

in the upper left corner of the screen. If the new window takes up half the

screen, the unit will place it on the left side of the screen.

Continue with the window selections until the screen is filled. The unit will

stay in the windows mode using your new customized screen. If you don’t

want to fill a screen and only use one, two, or three windows in a group,

simply press the key adjacent to the “STOP” label. This saves the group

and exits the modify windows mode.

Remember, you can always return to the full screen sonar mode by

pressing the “SONAR” key in the bottom left corner of the LMS-

350A. To switch back to your customized screen from the full screen

sonar, simply press the WINDOWS key, then use the down arrow key to

switch to the group you customized.

NOTE: The LMS-350A saves all window changes in memory. It keeps

these changes even if power is turned off. However, a preset does erase

all window changes and returns to the standard windows.

RESETTING ALL GROUPS

To return all of the groups to their factory settings without turning the unit

off and on again, press the WINDOWS key, then press the MENU key,

then press the key adjacent to the “MAIN MENU” label. Now press the key

adjacent to the “RE-PROGRAM A GROUP” label. Finally, press the key

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SONAR OPERATION

AUTOMATIC

When the LMS-350A is first

turned on, the Automatic fea-

ture is enabled. This is indi-

cated by the word “AUTO” at

thetopofthescreen. TheAuto-

maticfeatureadjuststhesensi-

tivity and range so the bottom

signal is displayed in the lower

half of the screen at all times.

ToturnAutomaticoff,firstpress

the AUTO key. A menu ap-

pears at the bottom of the

screen above the left and right

arrows. Press the left arrow

key to switch to the manual

mode. The letters “Man” ap-

pear in the upper left corner of

the display, indicating the unit

is in the manual mode. To turn

Automatic on, press the AUTO

key again, then press the right

arrow key.

Remember, when the LMS-350A is in the automatic mode, you have a

limited adjustment range on the Sensitivity control and no control over the

Range. Zoom adjusts differently in automatic than manual, also.

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SENSITIVITY

The sensitivity key on the LMS-350A controls the ability of the unit to pick

up echoes. A low sensitivity level excludes much of the bottom informa-

tion, fish signals, and other target information. High sensitivity levels

enables you to 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 Grayline and some surface clutter.

When the LMS-350A is in the Automatic mode, the sensitivity is automati-

cally adjusted to keep a solid bottom signal displayed, plus a little more.

This gives it the capability to show fish and other detail.

However, situations occur where 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. The procedure to

adjust it is the same whether the unit is in the automatic or manual mode.

To adjust the sensitivity, press the SENS key. The sensitivity adjust menu

appears on the right side of the screen.

The sensitivity menu has left and right arrows, plus a horizontal bar graph.

The graph gives a visual indication of the sensitivity level. The number

above the arrows also shows the percentage of sensitivity in use.

Toincreasethesensitivitylevel,

press the right arrow key. As

you press the key, the menu’s

bar graph will grow wider and

the percentage will increase in

value. You can also see the

difference on the chart record

as it scrolls. When the sensitiv-

ity is at the desired level, re-

lease the key.

To decrease the sensitivity

level, press the key adjacent to

the left arrow. The bar graph and percentage will decrease. When the

sensitivity is at the desired level, release the key.

When you reach either the maximum or minimum limit, a tone sounds.

To turn the menus off, press the CLR key or wait a few seconds and the

menus will automatically disappear.

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RANGE - Automatic

When turned on for the first time, the LMS-350A automatically places the

bottom signal in the lower half of the screen. This is called Auto Ranging

and is part of the automatic function. The range cannot be changed

manually while the unit is in automatic.

RANGE - Manual

The LMS-350A gives you control over the range when it’s in the manual

mode.Therearetwodifferentmethodsusedtochangetherange.Thefirst

way changes only the lower limit by pressing the arrow keys. On the

screen shown below, the lower limit is 60 feet. The upper limit is zero. The

secondmethodletsyouchange

both the upper and lower lim-

its. This let's you create a

"zoom" window down to five

feet in virtually any combina-

tion of upper and lower limits.

For example, a range with a 15

foot upper limit and a 45 foot

lower limit creates a 30 foot

zoom window. If the original

range was zero to sixty feet,

then this created a 2X zoom.

To change the range, first make certain the LMS-350A is in the manual

mode. Next, press the RANGE key. The range adjustment menu appears

onthe rightsideofthedisplay.Tochangeonlythelowerlimit,simplypress

the up or down arrow keys to decrease or increase the range. The

available ranges are 0-5, 10, 20, 30, 40, 60, 100, 150, 200, 300, 500, 800,

1000, 1500, 2000, 3000, and 5000 feet. After the desired range is

displayed, press the CLEAR key to erase the range menu.

NOTE: The maximum depth

capabilityoftheLMS-350Ade-

pendsonthetransducerinstal-

lation, waterandbottomcondi-

tions, and other factors. The

performance of the LMS-350A

will vary from day-to-day be-

cause of changing conditions.

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To change an upper or lower

limit using the numbered keys,

firstpresstheRANGEkey,then

press the key next to either the

"CHANGE UPPER LIMIT" or

"CHANGE LOWER LIMIT" la-

bels. On the screen shown at

right, the key next to the

"CHANGEUPPERLIMIT"was

pressed.Nowenterthedesired

depth, using the numbered

keys. In this example, we en-

tered 35 feet. Now press the ENT key. The LMS-350A erases the range

menus from the screen, and uses the new range you entered as shown

below.

To change the lower limit, sim-

ply repeat the above steps, but

press the key next to the

"CHANGE LOWER LIMIT" la-

bel.Nowenterthedesiredlow-

er limit and press the ENT key.

TheLMS-350Aerasesthelow-

er limit menus and changes

the lower limit to the one you

specified.

If you make a mistake while entering a limit, simply press the CLR key to

erase the numbers. To exit from either the upper limit or lower limit entry

screen, simply press the CLR key again.

ZOOM

Enlarging or “zooming” the picture is a common method used to show

small detail and fish signals. The LMS-350A gives you two different zoom

sizes, plus a split screen zoom option. The zoom operation and adjust-

ment is different in the automatic and manual modes.

ZOOM - AUTOMATIC MODE

To zoom the display in the automatic mode, first press the ZOOM key. All

targets on the display are enlarged four times normal size automatically.

The menus shown at the top of the next page also appear.

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next to the “RESET ALL

GROUPS” label.

Turn the zoom feature on (or

off) by pressing the key adja-

cent to the “OFF/ON” label.

Pressing the key adjacent to

the“2X/4X”labelenlargesech-

oes from two times to four

times their normal size.

To switch between the split

screen zoom and full screen

zoom, press the key adjacent to the “SPLIT/FULL” label. The screen

instantly splits into two sections. All targets on the left are shown at four

times the size of the ones on the right. If you switch to the 2X zoom mode,

echoes on the left side of the screen are shown at twice the size as the

ones on the right. The echoes that scroll across the screen are the exact

same echoes on both sides of the screen. They’re simply enlarged on the

left side. This feature tracks the bottom, keeping it on the display at all

times, when the automatic feature is on. Once you’ve set the zoom as

desired, press the CLR key to erase the menus.

ZOOM - MANUAL MODE

When you press the zoom key while the unit is in the manual mode, the

screen shown below appears. All of the menus on this screen work

identically as described above. However, one additional menu item is

shown when the unit is in the manual mode: “ADJUST”.

To adjust the zoom, press the key adjacent to the “ADJUST” label. A

screen similar to the one below appears. A zoom bar and adjust arrows

appear on the screen. The echoes on the left side of the screen are the

ones that appear between the

top and the bottom of the zoom

bar. Press the up or down ar-

rowkeystomovethezoombar

up or down. As you adjust the

zoom bar, the echoes move on

the left side of the screen at the

same time. The zoom adjust

menus will automatically clear

a few seconds after you’ve

pressed the last key. Remem-

ber, the LMS-350A won’t track

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the bottom when it’s in the

manual mode.

MENU - PAGE 1

CHART SPEED

The rate echoes scroll across

the screen is called the chart

speed. It’s adjustable by first

pressing the menu key, then

pressing the key adjacent to

the “Adjust Chart Speed” label.

Thechartspeedmenuappears

on the right side of the screen. Increase the chart speed by pressing the

right arrow key or decrease it

by pressing the left arrow key.

Thepercentageofchartspeed

in use changes as the arrow

keysarepressed.Thebarchart

also gives a graphical indica-

tion of the chart speed. You

can see the change on the

screen (both on the menu and

on the chart record) as you

press the keys. After you’ve

made the adjustment, press

theCLRkeytoerasethemenu.

To stop the chart, press the key adjacent to the “STOP” label in the unit’s

lower left corner. To start the chart, press the key next to the “START"

label.

GRAYLINE^®

GRAYLINE lets you distinguish between strong and weak echoes. It

“paints” gray on targets that are stronger than a preset value. 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 or no gray line. A hard bottom returns a strong signal which

causes a wide gray line.

If you have two signals of equal size, one with gray and the other without,

then the target with gray is the stronger signal. This helps distinguish

weeds from trees on the bottom, or fish from structure.

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GRAYLINE^®OFF

GRAYLINE^®ON

GRAYLINE is adjustable. Since GRAYLINE shows the difference be-

tween strong and weak signals, adjusting the sensitivity may require a

different GRAYLINE level, also. The level chosen by the LMS-350A at

power on is usually adequate

formostconditions.Experiment

with your unit to find the

GRAYLINE setting that’s best

for you.

To adjust GRAYLINE, press

the MENU key, then press the

key adjacent to the “Adjust

ChartGrayline”label. Ascreen

similar to the one at right ap-

pears. Nowpresstheleftarrow

key to decrease the gray level.

Press the right arrow key to increase it. The percentage of GRAYLINE in

use changes as the arrow keys are pressed. The bar chart also gives a

graphical indication of the GRAYLINE level. You can see the change on

the screen (both on the menu and on the chart record) as you press the

keys. After you’ve made the adjustment, press the CLR key to erase the

menu.

FISH I.D.

The Fish I.D. feature identifies targets that meet certain conditions as fish.

The micro-computer analyses all echoes and eliminates surface clutter,

thermoclines, and other signals that are undesirable. In most instances,

remaining targets are fish. The Fish I.D. feature displays symbols on the

screen in place of the actual fish echoes. There are four fish symbol sizes:

tiny, small, medium, and large. These are used to designate the relative

size between targets. In other words, it displays a small fish symbol when

it thinks a target is a small fish, a medium fish symbol on a larger target, etc.

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outwards from a group of limbs is the hardest object for the Fish I.D.

feature to distinguish from fish. You may see Fish I.D. symbols on the

screen when actually, there are no fish. Practice with the unit in both the

Fish I.D. mode and without to become more familiar with the Fish I.D.

feature.

To turn the Fish I.D. feature on, press the menu key, then press the key

adjacent to the “Turn Fish-ID On” label. Echoes will continue to scroll

across the screen, however, the surface clutter at the top will no longer be

displayed. Any targets the micro-computer determines are fish will be

displayedasfishsymbols.ToturntheFishI.D.featureoffagain,firstpress

themenukey.Next,pressthekeyadjacenttothe“TurnFishI.D.Off”label.

The menu immediately disappears and the sonar screen returns.

Remember, the Fish I.D. feature can’t be used when the LMS-350A is in

the manual mode. If you turn the Fish I.D. feature on when the LMS-350A

is in manual, the micro-computer will turn the automatic feature on. If you

turn automatic off when the Fish I.D. feature is on, the Fish I.D. feature will

be turned off also.

The micro-computer is sophisticated, but it can be fooled. It cannot

distinguish between fish and other suspended objects such as trotlines,

turtles, submerged floats, air bubbles, etc. Individual tree limbs extending

DISPLAY CONTRAST

Theunit’sdisplaycontrastisadjustabletosuitdifferentlightingconditions.

To adjust it, first press the menu key. The first menu page appears. Now

press the key next to the “Ad-

just Display Contrast” label. A

screen similar to the one below

appears. Now press the key

adjacent to the left arrow to

decrease the contrast. Press

the key adjacent to the right

arrow to increase it. The per-

centage of contrast in use

changes as the arrow keys are

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ALARMS

The LMS-350A has three different types of sonar alarms. The first is the

Fish Alarm. It sounds when the Fish I.D. feature determines an echo or

group of echoes is a fish. Another alarm is the Zone Alarm which consists

of a bar. Any echo that appears inside this bar triggers the alarm. The last

alarm is called the Depth Alarm. Only the bottom signal will trigger this

alarm. This is useful as an anchor watch, a shallow water alert, or for

navigation.

To adjust an alarm, first press

the MENU key. Now press the

key next to the "Adjust Alarms"

label.Thescreenshownbelow

appears. Press the key next to

the“SetDepthorGPSAlarms”

to adjust the shallow or deep

digital alarms.Press the key

next to the "Set Zone Alarm" to

adjust the zone alarm. The fish

alarm doesn't have an adjust-

ment. It's either on or off.

Thefollowingsectiondescribes

each sonar alarm and its limits.

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. A different tone

sounds for each fish symbol size shown on the display.

To turn the fish alarm on, press the MENU key, then press the key next

tothe"AdjustAlarms"label.Thescreenshownaboveappears.Nowpress

the key next to the "Turn Fish Alarm On" label.

To turn the fish alarm off, repeat the above steps. The label on the Alarms

menu now reads "Turn Fish Alarm Off". Press the key next to that label

to turn the fish alarm off.

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DEPTH ALARMS

Thedepthalarmssoundatone

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 ten feet, the alarm will

sound a tone if the bottom sig-

nal is less than ten feet. It will

continue to sound until you

mute it or until the bottom goes

deeper than 10 feet. The deep

alarmworksjusttheopposite. Itsoundsawarningtoneifthebottomdepth

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 by themselves.

To set the depth alarms, first press the MENU key, then press the key next

to the "Adjust Alarms" label. The screen on the previous page appears.

Now press the key next to the "Set Depth Alarms" label. The screen at the

top of this page appears.

To adjust the shallow alarm, press the key next to the "Shallow" label. To

adjust the deep alarm, press the key next to the "Deep" label. Both alarms

adjustidentically.We'llusethe

shallow alarm as an example.

Pressing the key next to the

"Shallow" label moves the

black box from the "OFF"

postion to the "Adjust". A new

screen appears as shown at

right. Use the numbered key-

pad on the right side of the unit

to enter the shallow alarm set-

ting. We used 10 feet in this

example. After you've entered

thedesiredalarmdepth, press

the ENT key. This enters the

alarm depth into memory. Now press the key next to the "Exit" label. The

shallow alarm is now set. If the bottom goes shallower than 10 feet, the

alarm will sound and a warning message appears on the screen at the

same time. A label also appears letting you mute the alarm, if desired.

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ZONE ALARM

The zone alarm consists of a

bar that appears on the right

side of the screen. Any echo

that appears on the screen

between the top and bottom of

the zone alarm’s bar will “trip”

the zone alarm.

Note: The zone alarm isn't

availableintheWindowsmode.

To set the zone alarm, press

the MENU key. Now press the key next to the “Adjust Alarms” label.

Finally, press the key next to the "Set Zone Alarm" label. A screen similar

to the one shown below appears.

The zone alarm bar shows on

the right side of the screen.

Use the arrow keys to move

the bottom of the bar higher or

lower. To move the top of the

bar, first press the key next to

the “CHANGE TO UPPER” la-

bel. Now use the arrow keys to

move the top of the bar higher

or lower. When you have the

zone alarm bar set as desired,

press the CLR key to erase the

menus.

The above steps automatically turn the zone alarm on if it was off. To turn

the zone alarm off, press the MENU key, then press the key next to the

"Adjust Alarms" label. Now press the key next to the "Turn Zone Alarm

Off"label at the bottom of the screen.

Normally, the zone alarm bar disappears from the screen after you make

adjustments. Toleavethezonealarmbaronthescreenallofthetime, see

the "Display Zone Alarm Bar" section in this manual for instructions.

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SONAR FREQUENCY

The LMS-350A operates from

50 or 192 kHz, either inde-

pendently or simultaneously.

The sonar unit comes with a

192 kHz transducer, other op-

tional transducers are avail-

able. See the transducer dia-

gram on page 3 for single or

dual transducer connections.

The chart can operate from a

different frequency than the

digital sonar.

The LMS-350A chart's operating frequency is 192 kHz when it's first

turned on. To change frequencies, first press the MENU key. The

menu shown above appears.

Next, press the key adjacent

to the "Select Sonar Fre-

quency" label. The screen

shown at left appears.

This menu lets you change

the frequency of both the

chart and the digital sonar.

Typically, you should use the

192 kHz frequency in shallow

water and the 50 kHz fre-

quency in deep water.

Now press the key adjacent to the desired frequency, either 50 kHz,

192 kHz, or both 50 and 192 kHz-split screen operation. (Note: Only the

chart can operate at both frequencies at the same time.) The unit will

begin scrolling echoes across the display. The frequency in use will also

be displayed at the bottom of the screen.

NOTE: The 192 kHz frequency for both the chart and digital sonar is

enabled when the LMS-350A is turned on for the first time or after a

preset. This feature is saved in the battery-backed-up memory.

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^C_Se^H_n^A_sit^R_iv^T_ity^D_a^U_nd^A_G^L_ra^F_y^R_li5_n^E_e^Q_®0^U_ad^Ek_ju^N_sH_t^C_d^Y_iz_ff^O_ere^P_n^E_tly^RA_wh^T_e^I_n^ON_{the Dual Frequency}

feature is enabled. The LMS-350A lets you make changes to the

sensitivity and Grayline on

1 9 2

one side of the screen without

affecting the other. To adjust

k Hz

the sensitivity, for example,

first press the SENS key. The

screen shown at right ap-

pears. To adjust the sensitiv-

ity for the left, or 50 kHz side

of the screen, press the key

adjacent to the "192kHz

50kHz" label. Now press the

left arrow key to decrease the

sensitivity or the right arrow to

Dual Frequency, Split Screen Mode

increase it. When you're fin-

ished, press the CLR key to

erase the menus.

(Left chart is operating at 50 kHz, right chart is

192 kHz.)

Note:Ifnofrequencyidentificationshowsatthebottomofthescreen, then

the 192 kHz frequency is in use. The letters "50 kHz" always show at the

bottom of the screen when the 50 kHz frequency is in use.

Remember, to use the 50 kHz frequency, you must have a 50 kHz

transducer attached to the unit. If you wish to use both 192 and 50 kHz

frequencies at the same time, you must have both transducers plus a

MY-2 adapter cable attached to the unit. See the transducer connec-

tions section at the front of this manual for more information.

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pressed. The bar chart also

gives a graphical indication of

thecontrastlevel. Youcansee

the change on the screen as

youpressthekeys.Afteryou’ve

made the adjustment, press

theCLRkeytoerasethemenu.

MENU - PAGE 2

ADJUST BACK LIGHT

LEVEL

The LMS-350A has internal

lights for the display and keyboard. To adjust the intensity of the lighting,

presstheMENUkey, thenpressthekeyadjacenttothe"More"label. Now

press the key next to the “Adjust Backlight Level” label. The screen shown

below appears. Now press the left arrow key to decrease the light level.

Presstherightarrowkeytoincreaseit. Thepercentageofbacklightinuse

changes as the arrow keys are

pressed. The bar chart also

gives a graphical indication of

the level. After you’ve made

the adjustment, press the CLR

key to erase the menu.

BACK LIGHT ON/OFF

To turn the back lighting on,

first press the MENU key, then

pressthekeynexttothe"More"

ADJUST SPEAKER VOLUME

The volume of the speaker's amplifier is adjustable. To change the

volume, press the MENU key, then press the key adjacent to the "More"

label. Now press the key next to the “Adjust Speaker Volume” label. A

screen appears with the speaker volume adjust menu which is similar to

the light adjust menu shown above. A musical tune sounds to indicate the

current speaker volume. Now press the left arrow key to decrease the

volume level. Press the right arrow key to increase it. The percentage of

volume in use changes as the arrow keys are pressed. The bar chart also

givesagraphicalindicationofthelevel. Afteryou’vemadetheadjustment,

press the CLR key to erase the menu.

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TURN DIGITAL INSTRUMENT BOX OFF

The digital box is displayed in the upper left corner of the full sonar screen.

It has the digital depth and automatic/manual indicators. To turn this box

off, press the MENU key then the key next to the "More" label, then the

key adjacent to the “TURN DIGITAL INSTRUMENT BOX OFF” label.

Repeat the above steps to turn the box on.

CONSTRUCT DIGITAL INSTRUMENT BOX

The LMS-350A can display the depth, speed, surface water temperature,

and distance log in the upper left portion of the screen. When the LMS-

350A is first turned on, only the depth is displayed. You can turn each

digital display on as desired or turn all of them off, as desired.

To select the digital displays menu, first press the menu key, then press

the key next to the "More" label. Next, press the key adjacent to the

“CONSTRUCT DIGITAL INSTRUMENT BOX” menu. A screen appears

that is similar to the one below.

Now press the key adjacent to

the desired display. For ex-

ample, to turn the temperature

display on, press the key adja-

cent to the “Include Tempera-

ture.” label. Once you do this,

the digital display in the corner

ofthescreenwillshowthetem-

peratureinadditiontothedepth.

Thetemperaturemenulabelnow

shows “Remove Temperature”.

You can turn each display on or off individually.

Press the CLR key to exit from

thismenuorwaitapproximately

ten seconds and the menus

will automatically clear.

Remember, to show speed,

temperature, or distance log

you must have an optional

speed/temp sensor installed

and connected to the LMS-

350A.

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label. Finally, press the key

next to the “Turn Backlight On

Off”label.Thismovestheblack

box from “OFF” to the “ON”

position. Toturnthebacklights

off, repeat the same steps.

MENU - PAGE 3

DISPLAY ZOOM BAR

When the unit is in the zoom

mode, the zoom bar doesn’t

normally show on the screen.

The zoom bar shows the sec-

tion of water on the right side of the screen that the zoom feature displays

on the left side. To turn the

zoom bar on continuously, first

press the MENU key , then

pressthekeynexttothe"More"

label two times. The screen

shown above appears. Now

press the key next to the “Dis-

play Zoom Bar” label. A screen

similar to the one at left ap-

pears. Note that turning the

zoom bar on also turns the

zoom feature on.

To turn the zoom bar off, repeat the above steps until the third menu page

appears, then press the key adjacent to the “Remove Zoom Bar” label.

This removes the zoom bar, but leaves the unit in the zoom mode. See the

zoom section for more information on this feature.

DISPLAY ZONE BAR

When the zone alarm is on, the

zonebardoesn’tnormallyshow

on the screen. To turn the zone

bar on continuously, first press

the MENU key, then press the

key next to the "More" label

until the third menu page ap-

pears. Now press the key next

tothe“DisplayZoneAlarmBar”

label. The zone alarm bar ap-

pears on the right side of the

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sonarscreenasshownatright.

This turns the zone alarm on at

the same time.

To turn the zone bar off, repeat

the above steps, until the third

menupageappears,thenpress

the key adjacent to the “Re-

move Zone Bar” label. Note

DIGITAL SONAR

WhentheLMS-350Aisturnedonforthefirsttime, thedigitaldepthdisplay

is located at the top left corner of the screen. This display comes from a

separate digital sonar built into the unit. It displays only the bottom depth.

If it loses the bottom, the last known depth will flash on the display. When

the digital finds the bottom, it will automatically display the bottom depth

again.

The digital sonar can be turned off, however this also turns all automatic

features off also, such as auto sensitivity, auto ranging, and the Fish I.D.

feature.

To turn the digital sonar off, press the Menu key, then press the key next

to the "More" label until the third menu page appears. Now press the key

adjacent to the “Turn Digital Sonar Off” label. To turn it back on again,

repeat the same steps.

TURN ALL SONAR OFF

To turn the LMS-350A into a GPS-only unit, press the MENU key, then

press the key next to the "More" label until the third menu page appears.

Now press the key next to the "Turn All Sonar Off" label. This stops both

the chart and the digital sonar. To turn both of the sonars on again, repeat

the above steps, then press the key next to the "Turn All Sonar On" label.

CHART CURSOR

The LMS-350A has a chart cursor that lets you pinpoint a target's depth.

The cursor is simply a movable horizontal line that extends across the

display from right to left. A depth box at the far right end of the line shows

theline'sdepth. Intheexampleatthetopofthenextpage, thechartcursor

depth is 16.4 feet. To turn the chart cursor on, press the MENU key until

thethirdmenuscreenappearsasshownatthetopofthispage. Nowpress

the key next to the "Turn Chart Cursor On" label. A screen similiar to the

one at the top of the next page appears. To move the chart cursor, simply

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press the up or down arrow

keys. This lets you move the

cursortoverifyatarget'sdepth.

To turn the chart cursor off,

press the MENU key until the

third menu screen appears.

Now press the key next to the

"Turn Chart Cursor Off" label.

The LMS-350A returns to the

sonar screen with the cursor

turned off.

MENU - PAGE 4

FASTRAK

This feature converts all ech-

oes to short horizontal lines on

the display’s far right side. The

graphcontinuestooperatenor-

mally. FASTRAK gives you a

rapid update of conditions di-

rectly under the boat. This

makes it useful for ice fishing,

or when you’re fishing at an-

chor. Since the unit is not mov-

ing,fishsignalsarelong,drawn

out lines on a normal chart dis-

play. FASTRAK converts the

chart to a vertical bar graph.

To turn FASTRAK on, press

the MENU key, then press the

key next to the "More" label

until the fourth menu page ap-

pears. Nowpressthekeyadja-

cent to the “Turn Chart Fastrak

On” label. To turn it off, repeat

the same steps. The “TURN

FASTRAK OFF” label appears

on this page when Fastrak is

on. Press the key next to this

label to turn it off.

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SELECT UNITS OF MEA-

SURE

The LMS-350A can display the

water depth in feet, fathoms, or

meters,surfacewatertempera-

ture in degrees Fahrenheit or

Celsius, speed in statute miles

per hour, kilometers per hour,

or knots, and distance (log) in

miles, kilometers, or nautical

miles.

To change the units of measure, press the MENU key, then press the key

nexttothe"More"labeluntilthefourthmenupageappears. Nowpressthe

key adjacent to the “Select Units of Measure” label. The screen shown

below appears. The black box on each line shows the unit of measure

currently in use. In the screen shown above, the units of measure are in

feet for the depth, temperature in degrees Fahrenheit, speed is in statute

miles per hour and log is in statute miles.

Press the key adjacent to the unit that you wish to change. For example,

press the key next to the "Depth" label two times to switch from feet to

meters. Thismovestheblackboxtwotimesfromthe“FT”tothe“M”. When

you have the units of measure set as desired, press the key next to the

“Exit” label.

CLEAR DISTANCE LOG

If the optional speed/temperature sensor is attached to the LMS-350A, it

starts counting distance as soon as the unit is turned on. It saves the

distance in memory even when the unit is turned off. To reset the distance

log to zero, press the MENU key, then press the key next to the "More"

label until the “Clear Distance Log” label appears, then press the key

adjacent to that label.

DEPTH LINES

The LMS-350A prints depth

lines across the display that

corresponds to the scales on

the right side of the screen as

shown on the screen at right.

To turn the depth lines on, first

presstheMENUuntilthefourth

menupageappears.Nowpress

the key next to the "Turn Depth

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Lines On" label. A screen similar to the one shown at the bottom of the

previouspageappears.Toturnthedepthlinesoff,repeattheabovesteps.

The label on the fourth menu page now reads "Turn Depth Lines Off".

Press the key next to that label. The LMS-350A returns to the sonar

screen.

MENU - PAGE 5

ADJUST CHART SURFACE

CLARITY

The markings extending down-

ward from the zero line on the

chart are called “surface clut-

ter.”Thesemarkingsarecaused

by wave action, boat wakes,

temperature inversion, and

other natural causes.

The Surface Clarity Control

(SCC) reduces or eliminates surface clutter signals from the display. SCC

varies the sensitivity of the receiver, decreasing it near the surface and

gradually increasing it as the depth increases. The maximum depth that

SCC will affect is 75% of the selected depth range. For example, on a 0-

SURFACECLUTTER

60 foot range with maximum

SCC, surface clutter will be re-

duced down to 45 feet.

There are three levels of SCC

availableontheLMS-350A:low,

medium, and high. When it’s

turned on for the first time, the

SCC level is low. To change it,

presstheMENUkey,thenpress

the key next to the "More" label

until the fifth menu page ap-

pears. Now press the key adja-

cent to the “Surface Clarity” label until the black box is on the desired SCC

level.

Press the key next to the “EXIT” label when you’re finished.

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ASP (Advanced Signal

Processing)

The ASP feature is a noise

rejection system built into the

LMS-350A that constantly

evaluates the effects of boat

speed, water conditions, and

interference. This automatic

feature gives you the best dis-

play possible under most con-

ditions.

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 two levels - Normal 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.

However, 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.

To change the ASP level, press the MENU key, then press the key next

to the "More" label until the fifth menu page appears. Then press the key

next to the “Level of ASP” label until the desired level is obtained.

SYSTEM INFORMATION

The System Information menu

gives you the date and revision

number of the software used int

the LMS-350A. To view this

menu,presstheMenukey,then

pressthekeynexttothe"More"

label until the fifth menu page

appears. Now press the key

next to the "System Informa-

tion" label. A screen similar to

the one at right appears. To

return to the sonar screen, press the key next to the "Exit" label.

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PRESET SONAR AND GPS

The LMS-350A has a built-in memory that saves all settings such as

sensitivity, chart speed, keel offset, speed calibration, and more. Virtually

all settings except for waypoint and route information is saved in this

memory. (Waypoints, icons, androutesaresavedinaseparatememory.)

Therefore, every time you turn the unit on, the settings are exactly as you

left them.

However, you can return the LMS-350A to it's factory settings using the

preset feature. This returns all sonar and GPS receiver settings at the

same time. To use this feature, press the MENU key, then press the key

next to the "More" label until the fifth menu page appears. Next, press the

key adjacent to the "PRESET SONAR AND GPS" label. The screen will

clear and return to the sonar display with the factory settings.

MENU - PAGE 6

ADJUST KEEL OFFSET

The keel offset feature lets you

compensateforthetransducer's

location. Since this sonar unit

measures the water depth from

thefaceofthetransducer,there

can be a significant difference

between the actual water depth

and what is displayed on the

unit. Forexample, supposeyou

mount a bolt-thru-hull trans-

duceronthebottomoftheboat.

When you launch the boat you

find that this location places the transducer three feet below the surface

of the water. Therefore, the depth sounder always reads three feet

shallower than the actual water depth. (In other words, if the bottom is 50

feetdeep, thedepthsounderwillread47feet, ifthetransducerismounted

threefeetbelowthesurface.)Thedifferencebetweenthedepthsounder's

reading (47 feet) and the actual water depth (50 feet) is called the keel

offset. In this example you will use a positive keel offset.

Another time you may wish to change the keel offset is if you want to know

the bottom depth from the deepest part of the boat. For example, by

careful measurment you find that the deepest part of the boat is four feet

below the face of the transducer. By setting a negative keel offset of four

feet, the sonar unit will show the bottom depth from the lowest part of the

boat to the bottom.

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IMPORTANT!

The digital depth display is the only sonar that is affected by the keel

offset feature! The chart will always show the distance from the face of

the transducer.

To adjust the keel offset, first press the MENU key then press the key next

to the "More" label until the sixth menu page appears. Now press the key

next to the "Adjust Keel Offset" label. The screen shown below appears.

The digital depth displays in the

upper left corner of the screen.

The keel offset in use shows in

the upper right corner. To set it,

simply enter the desired depth

using the numbered keys. Re-

member to add tenths. For ex-

ample, to set the keel offset to

three feet, first press the 3, then

press the 0 key. Finally, press

the ENT key.

To enter a negative keel offset, use the same steps as above, but press

the key next to the "Keel - +" label.

To turn the keel offset feature off, enter "0.0" or press the CLR key.

When you have the keel offset at the desired setting, press the key next

to the "Exit" label. The unit returns to the sonar screen, using the keel

offset you entered.

CALIBRATE SPEED

The speed display on the sonar screens comes from the optional speed

sensor - not the GPS receiver. To calibrate this sensor to your boat, first

presstheMENUkeysixtimeswhileasonarscreenisshowing. Nowpress

the key next to the "Calibrate Speed" label. The screen shown at the top

of the next page appears.

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Your current boat speed and

distance log are shown in the

upper left coner of the screen.

The calibration in percent is

shown in the upper right cor-

ner. Now enter the percent

change that is needed to make

the LMS-350's speed display

match your actual speed. For

example, if the LMS-350's

speed display is five percent

slowerthanyouractualspeed, thenuseapositivefivepercent. IftheLMS-

350'sspeeddisplayisfive percentfasterthanyouractualspeed, thenuse

a negative five percent speed calibration. Press the key next to the "Calib

- +" label to change the factor from positive to negative.

When you have the speedometer calibrated, press the key next to the

"Exit" label to return to the sonar screen.

BATTERY BACKUP

The LMS-350A saves all system settings, such as windows, units of

measure, alarm settings, and more in memory that is powered by an

internal battery. This keeps the memory "alive" while the unit is turned off.

The LMS-350A gives you the ability to turn this battery on or off. Turning

it off causes the LMS-350A to

"forget"allsystemsettingseach

timeyouturntheunitoff. This, in

effect,presetstheuniteachtime

it's turned off.

To turn the battery backup off or

on again, press the MENU key

until the screen shown at right

appears.Nowpressthekeynext

to the "Disable Battery Backup"

label. The unit returns to the last

used sonar, GPS, windows, or

plotter screen with the battery turned off. To turn it on again, repeat the

above steps.

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that this doesn't turn the zone alarm off. See the Alarms section for more

information on the zone alarm.

TRANSDUCER CONE ANGLES

The sound waves from the transducer spread out into the water in a cone

shaped beam. This looks much like the beam from a flashlight. The angle

between the outside edges of the cone is the cone angle.

Lowranceoffersachoiceoftransducerswitheitheran8or20degreecone

angle. The transducer supplied with the LMS-350A has a 20 degree cone

angle. Typically, wide cone angle transducers (20 degrees) are ideal for

operating in shallow to medium water depths. The 20 degree cone angle

allows you to see more of the underwater world. In 15 feet of water the

20 degree cone covers an area about six feet across. The 8 degree

transducer covers only about a two foot circle.

The 20 degree transducer is almost always the best to use in fresh water,

the 8 degree mostly in salt water. In a deep water environment, (300 feet

- fresh water, 100 feet - salt water) the narrow cone angle is more

desirable. Since the sound energy is concentrated in a smaller area, it can

penetrate to much deeper depths.

8 degree

20 degree

TRANSDUCER CONE ANGLES

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Both 8 degree and 20 degree transducers give accurate bottom readings,

eventhoughthebottomsignalismuchwideronthe20degreemodel. This

is because you are seeing more of the bottom. Remember, the shallow

edgeofthesignalshowsyouthetruedepth. Therestofthesignaltellsyou

whether you are over rocks, mud, etc.

if the cone passes over a fish in shallow water, the signal displayed on the

LMS-350Amaynotarchatall. Thisisduetothenarrowconediameterand

the resolution limitations of the display.

FISH ARCHES

Fish arches are created when the cone of sound passes over a fish. The

distance to a fish when the cone first strikes it is shown as “A” on the next

page. When the center of the cone strikes the fish, the distance is shorter

as shown “B”. As the cone leaves the fish, the distance increases again

as shown in “C”.

Very small fish probably will not arch at all. Medium sized fish will show a

BOAT'S DIRECTION OF TRAVEL

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partial arch, or a shape similar to an arch if they’re in deep water. Large

fish will arch, but turn the sensitivity up in deeper water to see the arch.

Becauseofwaterconditions, suchasheavysurfaceclutter, thermoclines,

etc., the sensitivity sometimes cannot be increased enough to get fish

arches.

One of the best ways to get fish arches is to expand or “zoom” a segment

of the water. For example, using the 2X or 4X zoom feature. The smaller

the segment, the better the screen resolution will be. The zoom feature

expands the echoes, making it easier to see detail. For the best results,

turn the sensitivity up as high as possible without getting too much noise

on the screen. In medium to deep water, this method should work to

display fish arches.

If you see fish signals when the unit is in the manual mode, but don’t get

fish symbols when the Fish I.D. feature is on, try increasing the sensitivity.

areas where fish are likely to be. Even if it’s the first time on the water!

IMPORTANT

SERVICE INFORMATION!

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.

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 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. Re-routing the power and trans-

ducercablesawayfromotherelectricalwiringontheboatmayhelp.Route

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thesonarunit’spowercabledirectlytothebatteryinsteadofthroughafuse

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 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

sureitisshootingthroughonlyonelayeroffiberglassandthatitissecurely

bonded to the hull. Do NOT use RTV silicone rubber adhesive or

Marinetex

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.

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 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

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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 ID feature is off:

1. Make certain transducer is pointing straight down. This is the most

common problem if a partial arch is displayed. See the Fish Arch section

in your owner’s manual for more information.

2. The sensitivity may not be high enough. In order for the unit to display

afisharch, ithastobeabletoreceivethefish’sechofromthetimeitenters

the cone until it leaves. If the sensitivity is not high enough, the unit

displays 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

willhavemuchbetterluckseeingfisharcheswitha30to60footrangethan

a0to60footrange. Thisenlargesthetargets, allowingthedisplaytoshow

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 display as

straight horizontal lines.

NOISE

A major cause of sonar problems is electrical noise. This usually appears

onthesonar’sdisplayasrandompatternsofdotsorlines.Inseverecases,

it can completely cover the screen with black dots, or cause the unit

operate erraticly, 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 certain the

engine is off, also. Turn your LMS-350A on, then turn off ASP (Advanced

Signal Processing). There should be a steady bottom signal on the

display. Now turn on each piece of electrical equipment on the boat and

viewtheeffectonthesonar’sdisplay. Forexample, turnonthebilgepump

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 re-route the

sonar unit’s power cable and transducer cable away from the wiring that

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is causing the interference. VHF radio antenna cables radiate noise when

transmitting, sobecertaintokeepthesonar’swiresawayfromit. Youmay

need to route the sonar unit’s power cable directly to the battery to isolate

it from other wiring on the boat.

Ifnonoisedisplaysonthesonarunitfromelectricalequipment, thenmake

certaineverythingexceptthesonarunitisturnedoff, thenstarttheengine.

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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WINDOWS GROUP SUMMARY

All of the window groups used by the

LMS-350A are shown on the following

pages. To view these groups, simply

press the WINDOWS key, then re-

peated press the down arrow key. This

will "cycle" the unit through all groups.

Remember, the optional LGC-1 GPS

module must be connected to the unit

for the navigation features to work.

GROUP "A"

GROUP "C"

GROUP "B"

GROUP "E"

GROUP "D"

GROUP "F"

GROUP "G"

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GROUP "H"

GROUP "I"

GROUP "K"

GROUP "J"

GROUP "M"

GROUP "L"

GROUP "N"

GROUP "O"

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GROUP "P"

GROUP "Q"

GROUP "S"

GROUP "R"

GROUP "U"

GROUP "T"

GROUP "V"

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WINDOWS SUMMARY

Alloftheavailablewindowsusedbythe

LMS-350A are shown on the following

pages. To view these groups, simply

press the WINDOWS key, then press

the MENU key twice. Now press the

key next to the "View all Windows"

label. Press the key next to the "Prev"

or "Next" labels to "cycle" the unit

through all windows.

WINDOW #1

WINDOW #3

WINDOW #2

WINDOW #5

WINDOW #4

WINDOW #6

WINDOW #7

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WINDOW 8

WINDOW #9

WINDOW #11

WINDOW #10

WINDOW #13

WINDOW #12

WINDOW #14

WINDOW #15

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WINDOW #16

WINDOW #17

WINDOW #19

WINDOW #18

WINDOW #21

WINDOW #20

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LMS-350A GPS OPERATION

IMPORTANT!

YOU MUST HAVE THE OPTIONAL LGC-1 GPS MODULE

ATTACHED TO THE LMS-350A TO USE THE POSITION

AND NAVIGATION FEATURES!

WARNING!

USE THIS PRODUCT ONLY AS AN AID TO NAVIGATION. A CAREFUL

NAVIGATOR NEVER RELIES ON ONLY ONE METHOD TO OBTAIN

POSITION INFORMATION.

CAUTION

The LGC-1 GPS receiver, (like all GPS navigation equipment) will show

the shortest, most direct path to a 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 travelling to a waypoint, but will also visually check to make certain

a clear, safe path to the waypoint is always available.

NOTICE!

As of this writing, the Department of Defense (DOD) has not declared the

GPS navigation system operational. The system is still in a testing phase.

Satellites can be turned off or accuracy can be degraded at will by the

system operators. Remember that the LMS-350A, or any GPS receiver

is only as accurate as the system it’s using.

All features and specifications subject to change without notice.

All screens in this manual are simulated.

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GPS TABLE OF CONTENTS

GPS - HOW IT WORKS ..................................................................................................................53

ACCURACY ....................................................................................................................................54

THE LOWRANCE GPS MODULE .................................................................................................. 54

GETTING STARTED - INITIALIZATION .........................................................................................55

CHANGE POSITION ..................................................................................................................56

CHANGE ALTITUDE ..................................................................................................................56

CHANGE TIME ...........................................................................................................................57

CHANGE DATE ..........................................................................................................................57

COLD START .............................................................................................................................57

POSITION/NAVIGATION DISPLAYS ..............................................................................................58

SATELLITE INFORMATION SCREEN ....................................................................................... 58

POSITION SCREEN ...................................................................................................................59

STEERING SCREEN..................................................................................................................60

CUSTOMIZE SCREENS .................................................................................................................61

PLOTTER........................................................................................................................................ 62

PLOTTER CURSOR...................................................................................................................63

PLOTTING WITH A WAYPOINT ................................................................................................ 64

PLOTTER MENUS ..................................................................................................................... 64

PLOTTER MENU - PAGE 1 .................................................................................................. 64

CLEAR PLOT ........................................................................................................................64

SET RANGE ..........................................................................................................................65

ICON ON/OFF .......................................................................................................................65

CHANGE DISPLAY ...............................................................................................................65

PLOTTER MENU - PAGE 2........................................................................................................66

GO TO CURSOR .......................................................................................................................66

PLOTTER UPDATE .................................................................................................................... 67

GRID LINES ............................................................................................................................... 67

SELECT UNITS OF MEASURE.................................................................................................. 68

EVENT MARKER ............................................................................................................................69

USING THE EVENT MARKER WITH THE CURSOR ................................................................69

ERASING ICONS .......................................................................................................................70

WAYPOINT NAVIGATION ..............................................................................................................70

HOW TO SAVE A WAYPOINT ...................................................................................................71

QUICK SAVE METHOD ........................................................................................................71

VIEW AND SAVE METHOD .................................................................................................. 71

ENTER NEW WAYPOINT .......................................................................................................... 72

NAME A WAYPOINT ..................................................................................................................72

ERASE A WAYPOINT ................................................................................................................73

RECALL A WAYPOINT...............................................................................................................73

ROUTES ......................................................................................................................................... 74

CREATING A ROUTE ................................................................................................................74

NAME A ROUTE.........................................................................................................................75

WAYPOINT SELECTION............................................................................................................ 75

FOLLOWING A ROUTE .............................................................................................................76

CANCEL NAVIGATION ..............................................................................................................77

MODIFYING A ROUTE ..............................................................................................................77

ERASING A ROUTE ...................................................................................................................77

GPS ALARMS .................................................................................................................................78

ARRIVAL ALARM .......................................................................................................................79

XTE (CROSS TRACK ERROR) ALARM ....................................................................................79

ANCHOR ALARM .......................................................................................................................79

CHANGING GPS SETTINGS .........................................................................................................79

SELECT NMEA/DGPS .................................................................................................................... 80

NMEA SETUP.............................................................................................................................80

DGPS SETUP .............................................................................................................................81

TRUE AND MAGNETIC POSITION ................................................................................................ 82

PRESET .......................................................................................................................................... 83

MAN OVERBOARD ........................................................................................................................83

GPS MODULE SELF-TEST ............................................................................................................ 84

GPS SIMULATOR ...........................................................................................................................85

PCF OFFSET ..................................................................................................................................86

SPECIFICATIONS ..........................................................................................................................88

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GPS - HOW IT WORKS

The Global Positioning System (GPS) is the best approach to navigation

that has ever been devised. Conceived by the Department of Defense

(DOD) and the United States military, the GPS system is an answer to

their needs of 24 hour global positioning, 365 days a year.

Basically, the system works by using a constellation of satellites orbiting

Earth 11,000 miles in space. There will be 21 satellites in orbit when the

system is fully operational. Three more satellites will act as spares, for a

total of 24. When all satellites are in place, at least four of them will be in

viewnearlyanywhereonEarthtwenty-fourhoursaday.TheGPSreceiver

requires at least three satellites to give a “2D” fix. (A 2D fix is your position

inlatitude/longitude.A3Dfixisyourlatitude/longitudeplusaltitude.)When

it locks on to at least four satellites, it displays a 3D fix.

It takes three satellites to determine position.

As the receiver locks on to each satellite, it calculates the distance from

the satellite by measuring the length of time it takes the radio signal to

reach it. Each satellite has an extremely accurate clock that tells the

receiver when the radio transmission started. The receiver compares that

time against its own clock, thus it knows how long it took the radio signal

(travelling at the speed of light!) to reach it. If you know time and speed,

then you can calculate distance. Once you have this from three satellites,

then the receiver can determine position.

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ACCURACY

You may have heard tales of extraordinary accuracy from GPS receivers.

The DOD requires accuracy of 10 to 15 meters from the satellite system.

However, only the military gets this precision. The way the military keeps

us and other unauthorized people from using the more precise system is

coding. In other words, the data coming from the satellites is encrypted.

CivilianGPSreceiversuse“C/ACode.”It’saccuracyisintentionallyworse

than the military’s “P Code.” In this manner, civilian users worldwide can

benefit from excellent position fixes. Meanwhile, the military keeps the

most accurate system away from potential enemies. Theoretically, C/A

code can give accurate position fixes up to 15 meters. This is more than

adequate for most people.

However (as of this writing), the military isn’t satisfied with C/A’s potential

accuracy in the hands of the world. So, it’s degrading it further with

“Selective Availability” or SA. This is small, random errors intentionally

added to the system so your accuracy will typically be within 100 meters.

Of course, accuracy also depends on the angle of the satellite above the

horizon, signal-to-noise ratio, the number of satellites tracked at one time

(themorethebetter), andotherfactors. Thesmallestrangesontheplotter

maynotbeusableiftheSAishigh. Thepresentpositionsymbolcanmove

off the screen even while you’re sitting still.

Don’t let this discourage you, however. GPS by nature has much faster

updates than other systems (such as Loran), and typically is much easier

to use. Accuracy, even with SA on is still better than most other navigation

systems. You’ve purchased one of the finest navigation instruments on

the market today. We hope you’ll enjoy it for many years to come.

The Lowrance LGC-1 GPS Module

This GPS receiver is currently used in all Lowrance GPS receivers. It’s

small, rugged, and fast. The five channel design lets it track all satellites

in view and acquire up to five satellites at one time. It sends position

information to the LMS-350A once every second. By incorporating

Rockwell’s GPS receiver technology with Lowrance’s state-of-the-art

design and manufacturing capabilities, Lowrance brings to the consumer

themostadvancedlineofGPSmarinenavigationsystemsavailableinthe

world.

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GETTING STARTED

Initialization - Power On

In order for the LMS-350A to lock onto the satellites, it must first find them.

Ifyousimplyturntheunitonandwait, theunitwillfindthesatellitesbyitself

in 15 minutes or less. This is called “Cold Start.” If you let it find the

satellites, the time display will probably be wrong, since it will be showing

UTC time or the time at Greenwich, England. However, all other naviga-

tiondisplays, includingthepositiondisplaywillbecorrect. (Youcansetthe

time to your local time.) To speed up the satellite acquisition process, you

can initialize the LMS-350A or “tell it where it is” the first time it’s turned

on. This initialization process is usually done only once and requires the

following data:

1. Present position in latitude/longitude

2. Elevation above sea level (altitude)

3. Today’s date and time

The unit usually only takes a few minutes or less to find the satellites once

it’s been initialized by the user.

After the power cable and GPS antenna module are installed, press the

ON key, then press the GPS key. Next, press the MENU key. Now press

the key next to the “Change GPS Settings” label. Finally, press the key

next to the “SET LAT, LON, ALT, TIME, DATE” label. The screen shown

below appears next.

This is the GPS setup screen.

The settings now in use are

shown at the top of the display.

A black box surrounds the lati-

tude box. If you’re using the

unit for the first time, these

settingsareprobablywrongfor

your position and time. To

change any of the numbers on

this display, simply move the

black box to the desired num-

ber using the arrow keys. As

you move the box, the label at the bottom of the screen also changes. For

example, to change the time, press the down arrow until the black box is

on the time. The label at the bottom of the screen now shows "Change

Time". Pressthekeynexttothislabel. Thisletsyouchangethetime, using

the number keys at the top of the unit. See the following pages on setting

the different items on this screen.

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Note: If you don’t use the “cold start” feature, then you will have to change

all of the settings on this page to their correct values. In other words, you

can’t simply enter your present position and have the unit find the correct

values by itself.

CHANGE POSITION

Use a chart to determine your position if you don’t know it. The latitude/

longitudethatyouenterdoesn’t

havetobeextremelyaccurate.

Typically, if you enter a posi-

tion within one degree of your

presentposition,theLMS-350A

should quickly find your actual

latitude/longitude. To change

yourpresentposition,firstmove

theblackboxtotheLATITUDE

box (if it isn't already there).

Next, press the key next to the

“CHANGE LAT” label. The

screen shownat right appears.

Next,simplyenteryourpresent

latitude using the numbered keys. Notice that the position entered is in

degrees,minutes,andhundredthsofaminute.(Notseconds!)Ifyoumake

a mistake, press the left or right arrow keys to move to the number in the

latitudethatneedschanging. Pressthekeynexttothe"LatitudeNS"label

to change the latitude from north to south, if necessary. After the latitude

has been entered, press the key next to the “Accept Lat” label.

The black box automatically moves to the longitude field after you enter

the latitude. Now enter the longitude using the numbered keys. Be certain

to enter a zero “0” as the first number in the longitude if it’s less than 100

degrees! After you’ve entered the last number, press the key next to the

"Longitude W E" label to change it from west to east, if necessary. When

everythinginthelongitudefieldiscorrect,pressthekeynexttothe“Accept

Lon” label.

CHANGE ALTITUDE

To enter your present altitude, move the black box to the Altitude field

using the arrow keys. Now press the key next to the "Change Alt" label.

The LMS-350A needs to know your elevation above sea level. (Not your

height above the ground.) Again, an approximation is usually sufficient.

Use the numbered keys to enter your altitude data. Press the key next to

the "Altitude + -" label if your altitude is below sea level. For example,

suppose you’re in Death Valley and the spot you’re standing in is 35 feet

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below sea level. You would

needtoenterthenumbers“35”,

then press the key next to the

"Altitude + -" label to change it

to -35 feet. Press the key next

to the “Accept Alt” label when

you’re done.

CHANGE TIME

To change the local time (the time at your position), press the arrow keys

to move the black box to the "Local Time" field. Now press the key next

to the “Change Time” label. The screen shown below appears.

Use the number keys to enter

the time. Remember to enter a

zero first if the time is less than

10.Forexample,enter073000

for 7:30. Press the key next to

the "Time AM PM" label to

change the time from AM to

PMPress the key next to the

“Accept Time” label when

you’re finished.

CHANGE DATE

To enter today’s date, press

the arrow keys to move the black box to the "Local Date" field. Now press

the key next to the “Change Date” label. Use the number keys to enter the

date. Press the key next to the “Accept Date” label when you’re finished.

The numbers at the top of the screen should be correct. If they aren’t,

press the key next to the label that you need to change. If everything is

correct, press the key next to the “Exit” label. The unit will switch to the

position screen and start searching for the satellites currently in view. It

should find the satellites and show a position in a few minutes.

COLD START

When the LMS-350A is turned on for the first time “out of the box”, it

automatically sends a “cold start” message to the GPS receiver. You also

can send a cold start message to the receiver.

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If the unit can’t lock on to the satellites using the data you’ve given it, or

if it has trouble finding the satellites, perhaps it is using the wrong data.

This can happen if you’ve entered the wrong data by accident. For

example, giveniteastlongitudeinsteadofwest. Orifyou’vemovedalong

distance with the unit turned off.

To send a cold start message to the receiver, press the MENU key. Now

press the key next to the “ChangeGPS Settings” label. Finally, press the

key next to the “GPS “COLD” Start” label. The unit will begin a cold start

technique to find the available satellites. It should lock on to them in 15

minutes or less. Remember, when it does, your local time and possibly

date display will probably be wrong. Use the method shown previously to

set the time and date to their proper local settings. Once this is done, an

internal clock will keep the correct time, even when the unit is turned off.

The GPS system updates this clock when the unit is locked on to the

satellites.

POSITION/NAVIGATION DISPLAYS

The LMS-350A has a position screen, plotter, steering indicator, and a

satellite information screen. These displays were designed to show the

most important data. However, you can customize all of them to some

extent through the “Change Display” feature on the first GPS menu

screen. (There are other screens that can be customized by using the

Windowsfeature. SeetheWindowssectionformoredetail.)Tocustomize

these screens, see the “Customize” section.

IMPORTANT!

If the data shown in digital numbers on any screen on this unit is flashing,

then it means that data is invalid. Do not rely on that data if it is flashing.

For example, if the position display is flashing, then the unit has lost the

satellites and hasn’t re-aquired them. The position that is flashing is your

last known position, not your present position! Do not navigate with this

unit until you have found the reason the unit has lost the satellites!

Each of the following screens is available by pressing a key at the bottom

of the unit, except for the satellite information screen A detailed descrip-

tion of each screen follows.

SATELLITE INFORMATION SCREEN

The satellite information screen shows technical data about each satellite

in view. To see this display, press the MENU key, then press the key next

to the "Satellite Information" label. A screen similar to the one at the top

of the next page appears.

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TheLMS-350Ahasafivechan-

nelGPSreceiver.Dataoneach

channel is shown at the top of

the display. The channels are

numbered one through five on

the left side of the screen. Ev-

ery satellite in the constellation

has a number assigned to it,

calledthePRN. ThePRNisthe

first number in the channel’s

row. TRK stands for “track.” If

the LMS-350A is tracking the

satellite, then a “T” is placed in

this column. If the LMS-350A is searching for the satellite, then a “S”

appears. ELV is the elevation (height) of the satellite above the horizon

from your position. AZM is the azimuth or direction of the satellite from

yourposition.Forexample,iftheazimuthofasatelliteis180degrees,then

it is due south. SNR is the signal-to-noise ratio. This tells you how strong

the satellite’s signal is. The higher the SNR number, the better.

The satellites that are visible in the sky from your position are shown in the

right side of the screen under the “VISIBLE SATS” heading.

IntheupperrightcornerofthescreenaretheDOPSdisplays. Theseshow

you the “Dilution Of Precision” (DOP) for the horizontal (HDOP), geomet-

ric (GDOP), position (PDOP), time (TDOP), and vertical (VDOP). The

GDOP is the combination value of HDOP, VDOP, and TDOP. The smaller

the GDOP’s number is, the better. The GPS receiver selects satellites

based on GDOP, therefore it always tries to use satellites that have good

DOP values. These depend on the azimuth and elevation of the satellite,

and any ground based obstructions.

Remember, the smaller the number - the better on all of the DOPs.

At the bottom of the screen are the Present Position (POSITION), Speed

Over Ground (SOG), Course Over Ground (COG), Distance To Go (to

waypoint) (DTG), Bearing (to waypoint) (BRG), and local time and date

displays. These displays are customizable.

POSITION SCREEN

The position screen automatically appears after the LMS-350A is initial-

ized or you can view this screen at any time by pressing the GPS key. The

position display shows your present position in large numbers at the top

of the screen and Speed Over Ground (SOG), Course Over Ground

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(COG), Distance To Go (DTG)

to waypoint, Bearing to way-

point, Time To Go (TTG) to

waypoint, and local time and

date displays at the bottom of

the screen.

Your present position shows at

the top of the screen in latitude/

longitude coordinates. This is

shownindegrees,minutes,and

thousandths of a minute. For

example, on this page, the present position is 31 degrees, 8.655 minutes

north latitude and 82 degrees, 50.445 minutes west longitude.

Please note that you must recall a waypoint to use the Bearing, Distance

To Go, and Time To Go displays.

STEERING SCREEN

The steering screen shows a pictorial view of your boat and course

travelled. This is called a Course Deviation Indicator or CDI. It also shows

Distance To Go (DTG), Bearing to Waypoint (BRG), Route Name (RTE

Name), Cross Track Error (XTE), Time To Go to Waypoint (TTG), and

Waypoint Name (WPT Name). Press the MENU key, then press the key

next to the "Steer Screen" to view this display.

Your present position is shown by the arrow. The arrow shows the

direction the boat is heading relative to the waypoint. In theory, if you steer

theboatwiththearrowalwayspointingtowardsthewaypoint, thenyouwill

arriveatthewaypoint. Thesolidlineextendingfromthearrowisyourtrack

or path you’ve taken. To travel directly to a waypoint, try to keep the arrow

on the center line. The waypoint is depicted by a box at the top of the CDI

display. As you approach the

waypoint, the arrow and the

box will move closer together.

If you travel past the waypoint,

the waypoint’s box will move to

the bottom of the display.

The numbers on the top left

side of the screen are distance

markers, showing the remain-

ing distance to the recalled

waypoint. If the numbers have

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a black box surrounding them, then the distance markers is showing the

distance PAST the waypoint. In other words, if the numbers are sur-

rounded by a black box, then you have passed the waypoint and need to

turn around.

The numbers immediately below the CDI are the CDI range in miles. This

gives you an idea of how far off course you are. For example, if the arrow

is halfway between the course line and the outside left line and the CDI

range is 0.5 miles, then your cross track error is to the left 0.25 miles. The

CDI range is the same as the CDI alarm setting. See the section on GPS

alarms to change the CDI range.

Using the digital displays at the bottom of the screen with the graphical

display at the top let you accurately steer the boat to a waypoint.

CUSTOMIZE SCREENS

The digital displays on the bottom half of the Position, Steering, and

Satellite screens, plus the displays on the Plotter screen can be changed

as desired. To show how this is done, we’ll use the Position screen as an

example.

To customize the Position Screen, first make certain it is showing by

pressing the GPS key. Next, press the MENU key. The first GPS menu

screen appears. Press the key

next to the “CHANGE POSI-

TIONDISPLAY"label.Theunit

returns to the Position Screen

with a black box around the

Speed Over Ground (SOG)

label . The letters "SOG" also

flash. The black box and flash-

ing letters identifies the Bear-

ing box as “ready for change.”

TochangetheBearingdisplay,

press the up or down arrow

keys to select the data that you

want to show inside the box.

NORMAL DISPLAY

DISPLAY READY FOR CHANGE

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In this example, we changed

theSpeedOverGround(SOG)

display to XTE (Cross Track

Error) by pressing the up arrow

key eight times.

To change another digital dis-

play, press the left or right ar-

row key. The label in the next

digital display box changes as

youpressthearrowkey.Again,

press the up or down arrow key to change the display.

The digital displays available for use are:

BRG .......................................... Bearing

SOG .......................................... Speed Over Ground

DTG...........................................Distance To Go

DEST WPT ...............................Destination Waypoint

POSITION .................................Present Position

ALTITUDE .................................Present Altitude

RTE NAME................................ Route Name

WPT NAME...............................Waypoint Name

TTG ...........................................Time To Go

XTE ...........................................Cross Track Error

TIME/DATE ...............................Local Time and Date

COG .......................................... Course Over Ground

VMG .......................................... Velocity Made Good

DEPTH ......................................Water Depth

When you have the display arranged as desired, press the CLR key. This

“locks” the display. Every time you switch to this display, it will appear as

you designed it, unless you preset the unit.

PLOTTER

The plotter lets you see your course and direction of travel on the screen.

If you’ve recalled a waypoint, the plotter shows your starting location,

present position, and destination. However, you do not have to recall a

waypoint to use the plotter. The plotter also can show grid lines on the

display. These grid lines show latitude and longitude lines that can help

you visulize your position or the location of other objects.

To use the plotter, simply press the PLOTTER key. A screen similar to the

one at the top of the next page appears.

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The flashing cross is your

present position. The solid line

is your track, or path you have

just traveled. The large square

is a compass rose marked with

North, South, East, and West.

The square’s height and width

shows at the bottom of the

screen. This is the distance

from one side to the other and

from the top to the bottom.

Your present position is shown

at the top of the screen.

If your present position starts to move outside the square, the LMS-350A

clearsthedisplay, thenre-drawsyourpresentpositionclosertothecenter

ofthescreen.Yourpresentpositionwillalwaysbedisplayedontheplotter.

To clear the plotter screen, see the Plotter Menus section.

OntheleftsideofthescreenbelowthePresentPositionboxaretheSpeed

Over Ground (SOG), Distance To Go (DTG), and Bearing (BRG) digital

displays. All of these displays are used only when a waypoint is recalled,

except COG and Positioin which are always active. These displays also

can be customized. See the Plotter Menus section for more detail.

PLOTTER CURSOR

The plotter cursor can help you determine the latitude/longitude of a

waypoint or event marker. To use it, press the up or down arrow key while

the plotter is displayed. A screen similar to the one below appears. Two

new lines appear on the screen. These are the plotter cursor lines. The

latitude/longitudepositionofthe

plottercursor-notyourpresent

position shows at the top of the

screen along with the distance

and bearing from your present

position to the intersection of

the cursor lines. Use the arrow

keys to move the cursor lines

tothedesiredlocation.Toerase

the cursor lines, press the CLR

key. This also will erase the

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cursor position, distance, and

bearing displays at the top of

the screen.

PLOTTING WITH A WAY-

POINT

Usingtheplotterwitharecalled

waypoint or route is an easy

way to see the effects of wind

and current on your boat. It

also simplifies navigation. To

use the plotter in this manner,

first recall a waypoint or start a route. (See the Waypoint Recall section

for more information.) Then press the PLOTTER key. A screen similar to

the one above appears.

The “S” is your starting location. This was your position when you recalled

the waypoint. The flashing circle with a cross is your present position. The

“flag” with a number inside is the destination (recalled waypoint). The

number inside the flag is the recalled waypoint number. In this example,

waypoint number 10 is the destination. The dotted line is the shortest,

most direct course from the starting point to the destination. Follow this

line to get to the waypoint.

The arrival alarm is automatically set to sound a tone when you come

withinapresetdistancetothedestinationwhenyourecallawaypoint. See

the section on alarms for more information about the arrival alarm.

PLOTTER MENUS

Pressing the MENU key while the plotter displays gives you a new set of

menusthatrelateonlytotheplotter.Therearetwopagesofplottermenus.

PLOTTER MENU - PAGE 1

CLEAR PLOT

Toclearorerasethesolidtrack

line from the screen, use the

"Clear Plot "menu selection.

Theplotterwillcontinuetodraw

your track after this key is

pressed, starting from your

present position.

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SET RANGE

Use the "Set Range" menu to

change the plotter’s range or

distance across the plotter’s

display. The range is 1 statute

mile when the LMS-350A is

turned on for the first time. The

available plotter ranges are .1,

.2, .5, 1, 2, 5, 10, 20, 50, and

100 miles. This lets you “zoom

in” to see small variations in

your course or “zoom out” to

seeyourstartingposition,presentposition,track,course,anddestination.

ICON ON/OFF

Pressing this key turns on the icons that you placed on the screen using

the EVENT MARKER key. For more information on this feature, see the

Event Marker section. This also turns on all of the waypoint icons, also.

ALARMS

Press this key for the alarms menu. For more information on the alarms,

see the ALARMS section.

CHANGE PLOTTER DISPLAY

When the LMS-350A is first turned on, (or after a preset), the plotter

screenhasacolumnofdigitaldisplaysontheleftsideofthescreen.These

displays can be changed or erased completely. This gives you a full-

screen plotter.

To change the plotter display, press the MENU key while the plotter is

displayed. Now press the key next to the "Change Plotter Display" label.

The menu shown below appears. To change to a full-screen plotter

display, press the key next to

the "Full Screen Plotter" key. A

plottersimiliartotheoneshown

at the top of the next page

appears.

Tochangedigitaldisplayboxes,

press the key next to the

"ChangeInfoBoxes". Ascreen

similar to the one on the next

page appears.

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The unit returns to the plotter

screenwithablackboxaround

the position display at the top

of the screen as shown below.

The word "POSITION" also

flashes, identifying it as ready

for change. Press the left or

right arrow keys to change the

data displayed in that box. For

example, to change the Posi-

tion display to Distance Go Go

(DTG), press the right arrow

key two times. To change an-

other digital box, simply press the up or down arrow keys until the desired

box's label is flashing. Then use the right or left arrow keys to select the

display.

When you're finished, press

the CLR key to exit.

PLOTTER MENU -PAGE 2

GOTO CURSOR

As mentioned previously, t he cursor lines can be used to place an icon

or highlight a position. When

you use the cursor lines, the

position of the cross hairs on

thedisplayareshownatthetop

of the screen. Pressing the key

next to the “GOTO CURSOR”

labelontheplottermenucauses

the LMS-350A to show naviga-

tion and steering data to the

position shown by the cross

hairs. This automatically turns

the arrival alarm on, also.

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To use this feature, first move the cursor lines to the desired location on

theplotterscreen. Next, presstheMENUkey. Nowpressthekeyadjacent

to the "More" label. Finally, press the key next to the “Go To User Cursor”

label. Theunitreturnstotheplotterscreen. Awaypointflagappearsonthe

screen(numbered“0”)thatwasthelocationofthecursorcrosshairswhen

you pressed the key next to the “Go To User Cursor” label. The digital

displays on all screens will show navigation information to this new

location. This includes the position, steering, and plotter displays. Re-

member, this is a temporary waypoint. It's erased when the unit is turned

off or if it's preset.

PLOTTER UPDATE

The plotter shows your track by drawing a solid line behind your present

position. The track is updated once every instantly when the unit is turned

on for the first time. However, if you’re travelling a long distance, the track

line may end prematurely due

to the limited number of dots

available that plot the track.

Using a longer update time To

change the update rate, press

the MENU key while the unit is

in the plotter mode, then press

the key next to the "More" la-

bel. Now press the key next to

the "Plot Update Rate" label.

The screen shown at right ap-

pears. The available plot up-

date times are Instant, 2, 5, 10,

and20seconds.Simplypressthekeynexttothedesiredupdatetime.The

LMS-350A immediately returns to the plotter screen using the new time.

GRID LINES

The plotter can show latitude/

longitudegridlinesbypressing

thekeynexttothe“SetGridOff

On” label on the second plotter

menu page. To turn the grid

lines off, repeat the previous

step.

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SELECT UNITS OF

MEASURE

TheLMS-350Acandisplaydis-

tance in miles, kilometers, or

nautical miles, velocity in miles

per hour, kilometers per hour,

or knots, bearing in degrees

magneticortrue,altitudeinfeet

or meters, and time in 12 hour

or 24 hour format.

To change any these, first

press the MENU key, then

press the key adjacent to the

"More" label. Now press the

key next to the “SELECT

UNITS OF MEASURE” label.

The screen shown at left ap-

pears. The black box on each

lineshowstheunitofmeasure

currently in use. In the screen

shownbelow,theunitsofmea-

sure are in statute miles for

distance, miles per hour for velocity, degrees magnetic for bearing,

altitude in feet, and time is in the 12 hour format (a.m./p.m.)

Press the key next to the unit that you wish to change. For example, press

the key next to the Distance label twice to switch from miles to kilometers.

This moves the black box two times from the “MI” to the “KM”.

When you have the units of measure set as desired, press the key next to

the “EXIT” label.

BACK LIGHT ON/OFF

To turn the back lighting on, press the MENU key, then press the key next

to the "More" label. Now press the key next to the “Backlight On Off” label.

This moves the black box from “OFF” to the “ON” position and turns the

lights on. To turn the backlights off, repeat these steps.

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EVENT MARKER

TheLMS-350Acanplaceevent

markers or “icons” on the plot-

ter to mark fishing spots, shal-

low water, or other special lo-

cations.Therearefivedifferent

icons to choose from and there

are 100 of each icon for a total

of 500. You can place each

icon individually, however, you

can't erase a single icon once

you've placed it. To erase an

icon, you have to erase all of the icons in that group.

To place an icon, press the EVENT MARKER key. The screen shown

above appears.

Now select one of the five icons shown on the left side of the screen by

pressing the key next to the desired icon. As soon as you press the key,

the LMS-350A places the icon at your present position. This icon always

stays in this location. It’s saved in memory so it will always show on the

display, even if the unit is turned off and on again.

Note: When you place an icon, first make certain the icons are on. When

the LMS-350A is first turned on or after a preset, the icons are automati-

cally turned on. However, if you turn the icons off (using the Set Icons

feature on the first plotter menu screen), then the icons won't show when

you place an icon. The unit will place the icon, however it won't show until

you turn the icons on.

Using the Event Marker with the Cursor

Normally, when you select an

icon, it’splacedontheplotterat

yourpresentposition.However,

you can place an icon any-

where on the plotter using the

cursor. To do this, first press

one of the arrow keys. This

makes the plotter cursor lines

appear on the display. Now

move the lines to the desired

positiononthedisplaybypress-

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ing the arrow keys. When it’s at the desired location, press the EVENT

MARKER key, then select an icon. The LMS-350A places the icon at the

intersection of the plotter cursor lines.

To erase the cursor lines, press the CLEAR key.

Erasing the Icons

Although you can place icons

on the plotter individually, you

can’t erase them one at a time.

You have to erase the whole

group of icons. For example, if

you’ve place 20 fish symbol

icons, erasing one of them

erases all 20.

To erase an icon, first press

the EVENT MARKER key.

Next, press the key next to the “DELETE ICON BANK” label. The screen

shown above appears.

Now select the group of icons that you wish to erase by pressing the key

next to the desired icon. After pressing the key, the LMS-350A erases all

of the selected icons from the plotter.

WAYPOINT NAVIGATION

HOW TO SAVE A WAYPOINT

Waypointsarelocationsontheearth’ssurfacethatyouwishtogoorreturn

to. Waypoints are useful for marking shipwrecks, hot fishing spots, and

other fishing or navigation locations. Storing waypoint’s in the LMS-350’s

memorymakesiteasytoreturntoanypointintheworldbysimplypressing

a few buttons. The LMS-350A can store up to 200 waypoints. You can

store your present position as a waypoint or enter latitude/longitude

positions as waypoints.

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(Quick Save Feature)

TheLMS-350Aletsyousaveyourpresentpositionasawaypointwithonly

one key press. This “Quick Save” feature lets you easily save the position

of a wreck or other locations.

To save your present position as waypoint, simply press the WAYPT

QUICKSAVE key. The LMS-350A takes your present position and

assigns the first available waypoint number to it.

Saving Present Position - View and Save Method

The “Quick Save” feature doesn’t let you select the waypoint number. You

have to use the next available number when using that method. The View

and Save method lets you pick the waypoint number that your present

position is stored in. (Note: You can store a position under a waypoint

number that already has a position assigned to it using this method.) To

saveyourpresentposition, presstheWAYPTkey, thenpressthekeynext

to the "WPT Save" label. A screen similar to the one below appears.

The first waypoint number in

the list appears at the top of the

page. This is the number that

your present position will be

stored under. Your position at

the time you pressed the

WAYPT key is shown in the

"Current Position" box in the

middle of the screen. If you

wish to save the location in the

CurrentPositionboxunderthis

waypointnumber,simplypress

the key next to the “Use Cur-

rent Position” label. The position shown in the Current Position box also

will show in the waypoint location at the top of the screen. To save the

waypoint without naming it, simply press the key next to the “Save WPT”

label.

Tosavethelocationunderadifferentwaypointnumber,pressthekeynext

to the “Increase WPT #” label to increase the waypoint number (i.e. from

waypointnumber1to2). Pressthekeynexttothe“DecreaseWPT#”label

to decrease the waypoint number. Or simply enter the desired waypoint

number using the numbered keys. Once you’ve decided the waypoint

number to save the location under, press the key next to the “Use Current

Position” label. Then press the key next to the "Save WPT" label. This will

store the location under the waypoint number you selected and return to

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the last used position, plotter, or steering screen.

Enter New Waypoint

Tosavealocationotherthanyourpresentposition, firstpresstheWAYPT

key, then press the key next to the "WPT Save" label. Using the up and

down arrow keys, move the black box down to the latitude/longitude

position. Now press the down

arrow key to the latitude posi-

tion. Press the key next to the

"Change Latitude" label. The

screen shown below appears.

Nowenterthelocationyouwish

to save using the numbered

keys. Use the left arrow key as

a backspace if you make a

mistake. In other words, press-

ing the left arrow key moves

theblackboxoverthelastnum-

ber entered. Notice that the

positionenteredisindegrees, minutes, andthousandthsofaminute. (Not

seconds!) Press the key next to the "Latitude N S" label to change the “N”

to a “S”, if your latitude is south. After you’ve entered the latitude, press

thekeynexttothe“AcceptLat”label. Thewaypointsavemenureappears.

Next, using the arrow keys, move the black box to the longitude position

andpressthekeynexttothe“ChangeLon”label. Nowenterthelongitude.

Make certain to add a zero to the longitude if it’s less than 100 degrees.

Forexample,ifthelongitudeis85degrees,thenenter“085”.Pressthekey

next to the "Longitude W E" label to change it from west to east, if

necessary. Press the key next to the “Accept Lon” label when you’ve

finished. The save waypoint menu appears with the position you entered

in the waypoint position box at the top of the screen. If this position is

correct, press the key next to

the “Save WPT” label.

Name a Waypoint

To assign a name to a way-

point, first press the key next to

the “Increase WPT” or “De-

crease WPT” label to move

through the list of waypoints.

When the desired waypoint

appears in the window, press

the down arrow key until the

blackboxmovestothe“NAME:”

position. Now press the key next to the “Change Name” label. The screen

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shown above appears.

Use the keys on both sides of

the screen to enter the way-

point name. For example, to

name a waypoint “COVE 1”,

press the ALARM key repeat-

edly until the letter “C” appears

in the window. Next, press the

right arrow key to move the

black box to the next letter po-

sition. Now press the WAYPT

RECALL key repeatedly until

the “O” appears on the screen. Repeat this process until the entire name

has been written on the screen. Now press the key next to the “Accept

NAME”label.TheLMS-350Areturnstothewaypointsavemenuasshown

above. To save the waypoint with this name, first press the key next to the

“Save WPT” label. Now press the key next to the “Exit” label to exit this

menu.

Erase a Waypoint

The Waypoint Erase feature

lets you erase waypoints from

the list. To erase a waypoint,

firstpresstheWAYPTkey,then

press the key next to the "WPT

Save" label. Now press the key

next to the “Increase WPT” or

“Decrease WPT” label until the

desired waypoint number ap-

pears on the screen. Simply

press the key next to the

“ERASE WPT” label. The

screen shown above appears. A message appears on the screen that

says “WAIT!! DELETE WAYPOINT ARE YOU SURE?.” If you are certain

this is the waypoint that you wish to erase, press the key next to the “YES”

arrow. If not, press the key next to the “NO” arrow. Press the key next to

the “YES” arrow to erase all information from the displayed waypoint

number.

Recall a Waypoint

You must recall a waypoint in order to navigate to that position with the

LMS-350A. To recall a waypoint, first press the WAYPT key, then press

the key next to the "WPT Recall" label. The screen shown at the top of the

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next page appears.

Now press the key next to the

“Increase WPT” or “Decrease

WPT” label until the desired

waypoint number appears on

the screen. Or simply enter the

waypoint number using the

numbered keys. When it does,

simply press the key next to

the“GotoWaypoint”label.The

LMS-350A begins showing

navigationdatatothewaypoint.

ROUTES

A route gives you the ability to navigate to several waypoints without

having to re-program the unit after arriving at each one. A route consists

of two or more waypoints. When you travel on a route, the LMS-350A first

shows navigation information to the first waypoint in the route. When you

reach the first waypoint, (signalled by the Arrival Alarm), the LMS-350A

automatically sequences to the next waypoint. Navigation information is

shown to this waypoint and the process repeats. When you reach the last

waypoint in a route, the arrival alarm sounds until you turn it off.

There are four steps required to create and follow a route. First, you must

create and name the route. Next, select the waypoints used in the route.

Thendeterminethestartingwaypoint. Next, telltheunittofollowtheroute.

Finally, the unit will ask you if you wish to run the route forward or

backward. After these steps are completed, the LMS-350A will start

showing navigation data to the first waypoint on the route.

CREATING A ROUTE

To create a route, first press the MENU key, then press the key next to the

"More" label. Finally, press the

key next to the "Route Plan-

ning label. Now press the key

next to the “Save/Edit Route”

label. The screen shown at

right appears.

This menu lets you select the

route number, name the route,

andchoosethewaypointsused

in the route. Select the route

that you wish to create by

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pressing the key next to the "Increase" or "Decrease" RTE# labels. When

the desired number appears, you can create or edit it.

Name a Route

To assign a name to a route, press the key next to the “Increase RTE#”

or “Decrease RTE#” label to move through the list of routes. When the

desiredroutenumberappearsinthewindowatthetopofthescreen,press

the down arrow key until the black box moves to the “Name” position. Now

press the key next to the “Change” label. The screen shown below

appears next.

Use the keys on both sides of

the screen to enter the way-

point name. For example, to

name a route “REEF 1”, press

theWAYPTkeyrepeatedlyuntil

the letter “R” appears in the

window. Next, press the right

arrow key to move the black

box to the next letter position.

Now press the RANGE key.

The letter “E” appears on the

screen. Use the number keys

to enter numbers. Repeat this process until the entire name has been

written on the screen. Now press the key next to the “Accept Name” label.

The LMS-350A returns to the route menu. You can now enter the

waypoints used in the route.

Waypoint Selection

If you’ve named a route, the black box should be on the “0” at the top of

the waypoint list. If not, move the black box to the “0” using the up or down

arrow keys. Now press the numbered key of the waypoint you wish to go

to first in the route. For ex-

ample, if you want waypoint

number 8 to be first, press the

8key.Ifyou’venamedtheway-

point, it shows in the blank

space to the right of the way-

point number. Next, press the

key next to the “Accept” label.

The LMS-350A reverts to the

menu shown at right.

The cursor should now be on

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the second waypoint line. Now enter the waypoint number for the second

waypoint in the route. Press the key next to the "Accept" label. Continue

entering the waypoints until all of the waypoints have been entered for the

route. Then press the key next to the “Save RTE” label. This saves your

route in memory.

IMPORTANT!

You must select waypoints in the order they are to be used in the route.

In other words, suppose you want a route that consists of waypoint

numbers 1, 3, and 5. However, you wish to travel to 3 first, then 1, and

finally 5. In this case, you must select waypoint 3, 1, and 5 in that order

when making the route.

FOLLOWING A ROUTE

To follow a route, press the MENU key, then press the key next to the

"More"label,thenpressthekeynexttothe"RoutePlanning"label. Finally,

press the key next to the “Recall Route” label.The screen shown below

appears. Route number one appears on the right side of the screen. The

list of waypoints used in the

route are shown beneath the

route number and name. If you

wish to recall a different route,

press the key next to the “In-

crease RTE#” or “Decrease

RTE#” label to cycle through

the available routes.

After you’ve selected the de-

siredroute,you’llnoticeablack

box surrounding the first way-

point in the route. This is the

starting waypoint box. If you wish to start the route using the first waypoint

in the route, simply press the key next to the “Start Route” label. However,

if you wish to start the route using a different waypoint, simply use the

down arrow key to move the black box to the desired waypoint number.

Then press the key next to the “Start Route” label.

Tofollowaroutebackwards, pressthekeynexttothe“Reverse”label. For

example, suppose you have three waypoints in a route and they’re

numbered 3, 6, and 2. If you travel forward through the route, the unit will

show navigation data to waypoint number 3 first, then 6, and finally 2. If

you travel backward through the route, the unit will start with waypoint

number 2 first, then 6, and end with waypoint number 3. No matter if you

travel forward or reverse through the route, when you reach the last

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waypoint in the route, the arrival alarm sounds until you turn it off.

IMPORTANT!

Turning the arrival alarm off prevents the LMS-350A from sequencing to

the next waypoint in the route. This, in effect, turns the route off. However,

the unit will still show navigation data to the current waypoint in the route

at the time the arrival alarm was turned off.

CANCEL NAVIGATION

To stop the LMS-350A from navigating to waypoint or navigating to a

waypoint in a route, press the MENU key twice. Now press the key next

to the “CANCEL NAVIGATION” label. This stops all navigation.

NOTE:

Canceling navigation does not erase the route or any waypoints from

memory. It merely stops the LMS-350A from navigating.

MODIFYING A ROUTE

Anypartofaroutecanbechangedatanytime. Forexample, supposeyou

have a route consisting of waypoints number 1, 2, and 3 and you wish to

changewaypointnumber3towaypointnumber5.SimplypresstheMENU

key, then press the key next to the "More" label, then press the key next

to the "Save/Edit Route" label. Using the keys next to the "Increase" or

"Decrease RTE#" labels, se-

lect the route number that you

wish to change. The list of

waypointsusedintherouteare

shown beneath the route num-

ber and name.

Using the down arrow key,

movetheblackboxtowaypoint

number3. Simplyusethenum-

bered keys to change the way-

point from 3 to 5. Next, press

the key next to the “Accept” label. You’ve changed the waypoint from 3 to

5. Now press the key next to the "Save RTE" label. Finally, press the key

next to the “Exit” label and you’re finished.

Remember, any part of the route can be changed at any time.

ERASING A ROUTE

To erase a route, first press the MENU key, then press the key next to the

"More"label.Nowpressthekeynexttothe"RoutePlanning"label.Finally,

pressthekeynexttothe“Save/EditRoute”label. Theroutemenuappears

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as shown above. Now press the key next to the “Increase RTE#” or

“Decrease RTE#” labels to cycle through the available routes.

After you’ve selected the desired route, press the key next to the “ERASE

RTE”label. Thiserasestheroutefrommemory. Finally, pressthekeynext

to the “EXIT” label. This returns you to the GPS display.

GPS ALARMS

TheLMS-350AhasthreeGPSalarms. Oneisanarrivalalarmthatsounds

when you come within a preset distance to a waypoint. Another is a cross

track error alarm that sounds

whenyoumoveoffcoursemore

than the alarm’s setting. The

last GPS alarm is an anchor

alarm that sounds when you

move outside a preset radius.

Allofthesealarmsaresetiden-

tically.

To adjust a GPS alarm, first

press the MENU key, then

press the key next to the

"Alarms" label. The screen

shown at right appears. Now

press the key next to the desired alarm's label. In this example, the Arrival

alarm is set. Pressing the key moves the black box from "OFF" to "Adjust".

A new box appears at the bottom of the screen as shown at the bottom of

this page. Using the numbered keys, enter the desired alarm "trip"

distance. In this example, we're setting the arrival alarm to sound an alert

if we come within 0.20 nautical miles of a waypoint. Once you've entered

the desired numbers, press the key next to the "Accept" label. The black

boxautomaticallymovestothe"ON"positionandthenumberyouentered

appears at the far right side of

the alarm's label. You can set

any other alarm on this page,

or return to a navigation or

plotter screen by pressing the

key next to the "Exit" label. To

turn an alarm off, simply press

the ALARM key, then press

the key next to the alarm label

untiltheblackboxmovesover

"OFF".

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The following section describes each GPS alarm and its limits.

ARRIVAL ALARM

The arrival alarm sounds a tone when your position is within the alarm’s

radius of a waypoint. For example, the alarm sounds if you come within

.1 mile of a recalled waypoint if the arrival alarm’s setting is .1 mile. The

alarm is adjustable from .01 to 9.9 miles.

XTE ALARM

The XTE (cross track error) alarm sounds a tone when your cross track

error is greater than the alarm’s setting. Changing the XTE alarm also

changes the XTE range on the steering screen. The alarm is adjustable

from 0.0 to 9.9 miles.

ANCHOR ALARM

Theanchoralarmsoundsatonewhenthepresentpositionmovesoutside

apresetradius. Forexample, ifyousettheanchoralarmto.1nauticalmile

(600 feet), then the alarm will sound if you move more than 600 feet from

the location where you set the alarm. It’s adjustable from 0.01 to 9.9 miles.

CHANGING GPS SETTINGS

For the fastest acquisition of satellites, the LMS-350A must be initialized

when it’s turned on for the first time. This is described at the beginning of

the GPS section in this manual. However, if you need to change only one

of the parameters (such as time), use the menu features in the “CHANGE

SETUP” menu. To do this, press the MENU key, then press the key next

to the “Change GPS Settings” label. Finally, press the key next to the “Set

Lat, Lon, Alt, Time, Date” label. The screen shown below appears.

Using the menus on this menu pages, you can change the Initial Position,

Time, Date, or Altitude without

affectinganyotherinitialization

setting.Allofthesemenuswork

identicallytotheonesdescribed

in the initialization section at

the beginning of the GPS sec-

tion. After you make a change,

the unit returns to the GPS or

plotter screen.

You may need to re-initialize

the unit if you move a long

distance (over 100 miles) with the unit off. In this example you would need

to enter a new initial position to help the LMS-350A find the correct

satellites quicker.

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SELECT NMEA

The LMS-350A sends data out the white wire on the power cable

according to standards set by the NMEA (National Marine Electronics

Association). This allows the LMS-350A to send position, depth, and

navigation information to “listener” units, such as charting instruments,

autopilots, and other marine instruments. The LMS-350A uses the

followingNMEAdataprotocols:NMEA0180and0183.NMEA0180sends

steering information only. It’s useful mainly for autopilots. NMEA 0183

sends depth, position, steering, speed, and more. In order to use this

feature,thewhitewireonthepowercablemustbeconnectedtotheNMEA

data input on the other instrument. See the installation section in the front

of this manual for wiring connection information.

The LMS-350A also has the capability to receive differential data from a

beacon receiver. This gives the unit much better accuracy than normal.

However, before purchasing and installing a beacon receiver, make

certain there are transmitters in the area you wish to use. Presently, the

LMS-350A can use the Magnavox MX-50R or StarLink MRB-2A. Please

note that the LMS-350A doesn't send NMEA 0183 data when the

Magnavox MX-50R beacon receiver is activated.

NMEA SETUP

Once you connect the wiring properly, the LMS-350A must be told which

NMEAdataformattouse.Con-

sult the owner’s manual of the

other equipment to see which

format it needs. Then set the

LMS-350A as follows:

First, press the MENU key.

Next, press the key next to the

“Change GPS Settings” label.

Now press the key next to the

“Select NMEA/DGPS” label.

The screen shown at right ap-

pears.

The data format currently in use shows at the top of the screen. To change

it, press the key next to the desired data output. Now press the CLEAR

key. The Accura will return to the last used GPS screen and send NMEA

data out the white wire on the power cable.

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DGPS (Differential GPS) BEACON RECEIVER SETUP

You'll have to tell the LMS-350A which beacon receiver's data to expect

and set up the parameters for that data. To do this, first press the MENU

key, then press the key next to the "Change GPS Settings" label. Now

press the key next to the "Select NMEA/DGPS" label. The screen on the

previouspageappears.Pressthekeynexttothedesiredbeaconreceiver.

The beacon receiver is selected, now you'll need to set it up for the

frequency and bit rate of the station you'll be using in your area.

Now press the key next to the "Setup Beacon Receiver" label. The screen

shown below appears.

The station frequency and bit

rate are shown on the right side

of the screen. Press the key

adjacent to the "INC FREQ" to

increase the station frequency

orthe"DECFREQ"todecrease

it. Do the same for the bit rate.

(Note: If you set the frequency

to zero, the Starlink MRB-2A

will automatically change fre-

quencies and bit rates for new

stations as you travel. Otherwise, you will have to manually change the

frequency and bit rate when you move out of range of the current station.)

When the station frequency and bit rate are adjusted to their proper

settings, press the key next to the "EXIT" label. The LMS-350A returns to

the last used GPS screen. The letters "DGPS" appear next to the

"POSITION" on all screens that show your present position, showing that

the beacon receiver is working.

To view the status of the beacon signal, press the MENU key until the

fourthmenupageappears.Now

press the key adjacent to the

"DifferentialGPSStatus"label.

Ifthebeaconreceiverisreceiv-

ing data from the transmitter

and is connected properly to

the LMS-350A, a screen simi-

lar to the one shown at right

appears.

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This page shows the station ID

number, its frequency and bit

rate, the "health" of the station

(0 = best, 5 = worst), signal

strength (the higher the num-

ber, the better), and the signal-

to-noise ratio (SNR). The high-

er the SNR number, the better.

The lower half of the screen

shows statistics for each of the

receiver's five channels. This

includes the satellite number

(PRN), its status (STAT), the User Differential Range Error (UDRE), Time

status (TIME), and if SA (Selective Availablity) is on or off. The UDRE is

the range error from your position to the satellite. If there is an "OK" in this

field, then the range error to that satellite is 8 meters or less 68 percent of

the time.

For more information, read your beacon receiver's manual.

TRUE and MAGNETIC POSITION

True and magnetic north are not the same. True north is the top of the

world. It’s where all lines of longitude converge. Magnetic north is the

location our compasses point. It lies several hundred miles to the south of

true north, at a location in Canada.

Charts are usually laid out according to a Mercator projection that uses

true north. If you plot a course on a chart using the Mercator projection,

you’ll either have to convert magnetic to true or use true readings.

The LMS-350A can display navigation information in magnetic or true.

When it’s turned on for the first time magnetic is used. To switch to true,

press the MENU key while a GPS screen is displayed. Next, press the key

next to the “Change GPS Settings” label. Now press the key next to the

“Select Units of Measure” label. Now simply press the key next to the

“Bearing” label. This moves the black box from “MAG” to “TRU.” Press the

key next to the “Exit” label when you’re finished.

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PRESET

The Preset feature returns all sonar and GPS units to their original factory

settings. This resets the units of measure, speaker volume, display

contrast, and more. This doesn’t erase any waypoints or routes, however.

To preset the unit, press the MENU key until the “Preset Sonar and GPS”

label appears. Press the key next to that label. The menu screen

disappears and the LMS-350A returns to the GPS position screen. All

units will be returned to their factory settings.

MAN OVERBOARD

Oneofboating’smostterrifyingeventsishavingafriendorfamilymember

fall overboard. This situation can be deadly on any body of water, fresh or

salt. 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 try all standard safety

measures to try and rescue the person. If you lose sight of the person, you

can use the LMS-350A to help start a search pattern.

Once you’re back at the helm after initial rescue efforts have failed, press

the LMS-350’s MAN OVERBOARD key. The screen shown below ap-

pears. Your position at the time you pressed the Man Overboard key is

shown in the top left corner of the display. Beneath the position is the time

that you pressed the Man Overboard key. At the bottom of the screen are

the navigation data displays

showing the Distance (DTG),

Bearing(BRG),Course(COG),

Speed Over Ground (SOG),

and Time To Go (TTG) back to

the postion at the top of the

display. Using these displays

along with the plotter in the

lower right corner of the screen

gives you the information you

need to steer back to the man

overboard position.

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The LMS-350A doesn't save the Man Overboard position in the waypoint

table. However, it does save the position on the Man Overboard screen.

TheLMS-350Aalwaysshowsnavigationdatatothepositionshownonthe

Man Overboard screen whenever the Man Overboard key is pressed. To

stop the unit from navigating to the Man Overboard position, press the key

next to the "DISABLE MOB" label. This resets the Man Overboard

navigtion. Forexample, supposeyouareviewingthePositionscreen, and

you press the Man Overboard key, then press the GPS key. The LMS-

350A first displays then stores your present position on the Man Over-

board screen, then switches back to the Position screen. If you press the

Man Overboard key again, it will still show navigation data to the position

you were in when you first pressed the Man Overboard key - not your

present position. Repeated pressing of the Man Overboard key does not

repeatedlysaveyourpresentposition!Theunitonlysavesthepositionthe

first time the Man Overboard key is pressed. To save a new Man

Overboardpostion,youmustfirstcleartheoldpositionbypressingthekey

adjacent to the "DISABLE MOB" label.

You can navigate to a waypoint using the Waypoint Recall feature,

however when you go back to the Man Overboard screen, the AccuNavII

stops navigating to the recalled waypoint and show navigation data to the

Man Overboard location.

Remember, saving the victim is the primary goal. Try all options to rescue

the person immediately after the accident happens. Training and educa-

tion are also good accident preventatives. The Coast Guard has

excellentsafety courses. Instruct all members on board your boat on

safetyproceduresbeforeleavingthedock.Makecertainallonboardknow

what to do before any emergency occurs.

GPS MODULE SELF-TEST

This feature tests the GPS module and returns a special code. This code

is of interest only to the service department. However, the LMS-350A

interpretsthiscodeanddisplaysastatusmessage.Thismessageiseither

“MODULE HAS PASSED” or “MODULE HAS FAILED” and shows at the

bottom of the screen. The current software version number also appears

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near the bottom of the screen. Contact the factory customer service

department if the module fails the self test. Do not attempt to use this

product if it fails the self test.

To use the self test feature, press the MENU key, then press the key next

to the "More" label. Finally, press the key next to the “GPS Module Self

Test” label. The screen shown at right appears.

To exit from this screen, press the key next to the "Exit" label.

GPS SIMULATOR

Thisfeatureplacespositionand

navigation data on all screens,

including the plotter. The unit

“navigates” a closed course. It

shows bearing and distance to

go, course over ground, and

other information. A recurring

messageappears, alertingyou

that the simulator mode is en-

abled. Don’t navigate when the simulator is on!

To turn the simulator on, press the MENU key, then press the key next to

the "More" label. Finally, press the key next to the “GPS Simulator OFF

ON” label. The simulator mode starts immediately. To turn the simulator

off, either press and hold the OFF key or repeat the above steps.

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PCF OFFSET

The GPS navigation system relies on complex mathematical calculations

to determine your position based on satellite data and other factors. One

factor is the Earth's shape. Since the Earth is not a true sphere, variations

in the calculations have to be made to accommodate deviations. To make

matters more complex, not everyone uses the same data to determine

what the deviations are. The size and shape of the ellipsoids that are used

to approximate the earth's surface are improved often. This can lead to

errors if your navigation device uses one ellipsoid, while your chart uses

a different one. The term used for these ellipsoids is "Datum."

Toreducetheerrorfactorbetweendatum,thisunitgivesyouthecapability

to move or "offset" the position shown on the display to match the one on

the chart. The unit will add this offset to all position displays at all times.

For example, suppose you are anchored at a location that is accurately

marked on a chart. Your unit shows a longitude position that is .010

degrees less than the one on the chart. Using the Position Correction

Factor(PCF)Offsetfeature, youmaketheunitreadthesameasthechart.

If you raise anchor and move, the unit will continuously add the change to

all position displays. This makes it more closely match the datum used by

the chart. For this reason, you should be careful when entering the PCF

offset. This offset is saved in memory. It doesn't change when the unit is

turned off. However, a Preset does erase the PCF factor.

To set the PCF factor, first

press the MENU key, then

press the key next to the

"Change GPS Settings" label.

Now press the key next to the

"PCFOffset"label. Thescreen

shown at right appears.

Now press the key adjacent to

the "Change Offset" label to

enter the correction factor for

your location. The screen

shown at the top of the next page appears. Remember, this is the

differencebetweenthelocationshownonthepresentpositiondisplayand

the position shown on the chart.

Use the arrow keys to move the black box to the number that you wish to

change in the latitude, then enter the numbers. Press the key next to the

"Latitude N S" to change the latitude from north to south, if necessary.

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Press the key next to the "Ac-

cept Offset" label when you've

enteredthedesiredlatitudeoff-

set. Repeat this procedure to

change the longitude. In this

example, we have entered 0

degrees,.012 minutes north

lattitude and 0 degrees, .068

minutes east longitude as the

PCF offset. That is the differ-

ence between the present po-

sition shown on the unit and

ourpositionshownbythechart.

In other words, our position shown on the unit is 0.012 minutes north and

0.068 minutes east of the position shown on the chart.

After you've entered the desired offset, press the key next to the "PCF

Offset OFF ON" label. This turns the PCF correction factor that you

entered on. To leave this

screen, press the key next to

the "Exit" label. This also puts

your changes into effect.

To turn these changes off, re-

turn to this screen and press

the key next to the "PCF OFF-

SET OFF ON" label. Remem-

ber, Presetting the unit also

erasesanyPCFoffset,thereby

turning it off.

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LMS-350A GPS RECEIVER SPECIFICATIONS

GPS Module Dimensions ..........2.5"H x 4.1"W x 7" D

Channels ...................................Five Parallel

Four continuous for position

All satellites in view tracked

Update rate ...............................One second

Accuracy ...................................Maximum accuracy achievable with

Standard Positioning Service

Position: ....................................25 meters CEP

Velocity:.....................................0.25 meters/sec RMS

Without SA PDOP<6.0

NMEA 0183 SENTENCES

RMB ................Minimum Recommended Sentence, Part B

RMC ................Minimum Recommended Sentence, Part C

GLL ................. Present Position - Latitude/Longitude

APB ................. Autopilot Steering Data

DBT ................. Water Depth

MTW ............... Water Temperature (oC)

VHW ................Speed Through Water (KPH)

VLW ................Distance Travelled/LOG (NM)

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LITHO IN U.S.A.

988-0133-01

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