Furuno Radar Detector 1932 User Manual

Back

Download from Www.Somanuals.com. All Manuals Search And Download.

SAFETY INSTRUCTIONS

"DANGER", "WARNING" and "CAUTION" notices appear throughout this manual. It is the

responsibility of the operator and the installer of the equipment to read, understand and

follow these notices. If you have any questions regarding these safety instructions, please

contact a FURUNO agent or dealer.

WARNING

Do not open the equipment.

WARNING

Do not disassemble or modify the

equipment.

Hazardous voltage which can

cause electrical shock, burn or

serious injury exists inside the

equipment. Only qualified

personnel should work inside

the equipment.

Fire electrical shock or serious injury can

result.

Turn off the power immediately if water

leaks into the equipment or the

equipment is emitting smoke or fire.

Wear a safety belt and hard

hat when working on the

antenna unit.

Continued use of the equipment can cause

fire or electrical shock.

Serious injury or death can

result if someone falls from

the radar antenna mast.

Do not place liquid-filled containers on

the top of the equipment.

Fire or electrical shock can result if a liquid

spills into the equipment.

Stay away from transmitting

antenna.

The radar antenna emits mi-

crowave radiation which can

be harmful to the human body,

particularly the eyes. Never

look directly into the antenna

radiator from a distance of

less than 1 m when the radar

is in operation.

CAUTION

Use the proper fuse.

Use of a wrong fuse can result in fire or

permanent equipment damage.

Do not use the equipment for other than

its intended purpose.

Turn off the radar power

switch before servicing the

antenna unit. Post a warn-

ing sign near the switch

indicating it should not be

turned on while the antenna

unit is being serviced.

Personal injury can result if the equipment

is used as a chair or stepping stool, for

example.

Do not place objects on the top of the

equipment.

Prevent the potential risk of

someone begin struck by the

rotating antenna and expo-

sure to RF radiation hazard.

The equipment can overheat or personal

injury can result if the object falls.

Download from Www.Somanuals.com. All Manuals Search And Download.

FOREWORD

Features

Congratulations on your choice of the

FURUNO MODEL 1832/1932/1942 Marine

Radar. We are confident you will see why the

FURUNO name has become synonymous with

quality and reliability.

Your radar has a large variety of functions, all

contained in a remarkably small cabinet.

The main features of the MODEL 1832/1932/

1942 are:

For over 50 years FURUNO Electric Company

has enjoyed an enviable reputation for innova-

tive and dependable marine electronics equip-

ment. This dedication to excellence is furthered

by our extensive global network of agents and

dealers.

¡ Traditional FURUNO reliability and qual-

ity in a compact, lightweight and low-cost

radar.

¡ Durable brushless antenna motor.

¡ On-screen alphanumeric readout of all op-

Your radar is designed and constructed to meet

the rigorous demands of the marine environ-

ment. However, no machine can perform its

intended function unless properly installed and

maintained. Please carefully read and follow

the recommended procedures for installation,

operation and maintenance.

erational information.

¡ Standard features include EBL (Electronic

Bearing Line), VRM (Variable Range

Marker), Guard Alarm, Display Off Center,

and Echo Trail.

¡ Watchman feature periodically transmits the

radar to check for radar targets which may

be entering the alarm zone.

While this unit can be installed by the purchaser,

any purchaser who has doubts about his or her

technical abilities may wish to have the unit

installed by a FURUNO representative or other

qualified technician. The importance of a

through installation can not be overemphasized.

¡ Ship’s position in latitude and longitude and

Loran C Time Differences, range and bear-

ing to a waypoint, and ship’s speed/ head-

ing/course can be shown in the bottom text

area. (Requires a navigation aid which can

output such data in IEC 1162 format.)

We would appreciate hearing from you, the end-

user, about whether we are achieving our pur-

poses.

¡ Zoom feature provided.

Thank you for considering and purchasing

FURUNO equipment.

iii

Download from Www.Somanuals.com. All Manuals Search And Download.

TABLE OF CONTENTS

FOREWORD ...................................iii

SPECIFICATIONS ...........................v

EQUIPMENT LIST ........................viii

3. MENU OPERATION...................12

3.1 Basic Menu Operation ...................... 12

3.2 Selecting the Presentation Mode ...... 12

3.3 Magnifying Long Range Echoes (echo

stretch).............................................. 13

3.4 Echo Trail.......................................... 13

3.5 Suppressing Radar Interference ........ 14

3.6 Selecting Pulsewidth......................... 15

3.7 Guard Alarm ..................................... 15

3.8 Watchman ......................................... 16

3.9 Displaying Navigation Data ............. 17

3.10 OTHER MENU Description........... 18

3.11 Function Keys ................................. 19

3.12 Suppressing Noise .......................... 19

3.13 Adjusting Brilliance of Markers ..... 19

3.14 Outputting Target Position .............. 19

CONFIGURATION OF

MODEL 1832/1932/1942 .............x

1. PRINCIPLE OF OPERATION ......1

1.1 What is Radar? .................................... 1

1.2 How Ships Determined Position Before

Radar .................................................. 1

1.3 How Radar Determines Range ........... 1

1.4 How Radar Determines Bearing ......... 1

1.5 Radar Wave Speed and Antenna Rota-

tion Speed ........................................... 1

1.6 The Radar Display .............................. 1

4. FALS ECHOES ..........................20

2. BASIC OPERATION ....................3

4.1 Multiple Echoes ................................ 20

4.2 Side-lobe Echoes .............................. 20

4.3 Indirect Echoes ................................. 20

4.4 Blind and Shadow Sectors ................ 21

2.1 Control Description ............................ 3

2.2 Display Indications and Markers ........ 4

2.3 Turning the Radar On and Off ............ 5

2.4 Transmitting ........................................ 5

2.5 Stand-by .............................................. 5

2.6 Selecting the Range ............................ 6

2.7 Adjusting Picture Brilliance ................ 6

2.8 Adjusting Receiver Sensitivity ........... 6

5. MAINTENANCE & TROUBLE-

SHOOTING ................................22

5.1 Preventitive Maintenance ................. 22

5.2 Replacing the Fuse............................ 22

5.3 Troubleshooting ................................ 23

5.4 Self Test ............................................ 24

5.5 Life Expectancy of Magnetron ......... 24

2.9 Adjusting the A/C SEA Control (reduc-

ing sea clutter) .................................... 6

2.10 Adjusting the A/C RAIN Control

(reducing rain clutter)......................... 7

6. INSTALLATION .........................25

2.11 Erasing the Heading Line, North Mark

.......................................................... 8

6.1 Antenna Unit Installation .................. 25

6.2 Display Unit Installation ................... 30

2.12 Measuring the Range ........................ 8

2.13 Measuring the Bearing...................... 9

2.14 Using the Offset EBL ....................... 9

2.15 Shifting (off centering) the Picture . 10

2.16 Zoom ............................................... 11

6.3 Exchange of Fuse for 24/32V Power

Supply .............................................. 32

6.4 Checking the Installation .................. 32

6.5 Adjustments ...................................... 32

MENU TREE ............................. AP-1

ARP-10 (OPTION) .................... AP-2

Declaration of Conformity

Download from Www.Somanuals.com. All Manuals Search And Download.

monochrome CRT

MODEL 1832

SPECIFICATIONS

3. Range scale (nm):

Range, Range interval and no. of Rings:

0.125 (0.0625, 2), 0.25 (0.125, 4), 0.75

(0.25, 3), 1 (0.25, 4), 1.5 (0.5, 3), 2 (0.5, 4),

3 (1, 3), 4 (1, 4), 6 (2, 3), 8 (2, 4), 12 (3, 4),

16 (4, 4), 24 (6, 4), 36 (12, 3)

ANTENNA UNIT

4. Bearing resolution:

4°

5. Bearing accuracy:

6. Range discrimination:

7. Range ring accuracy:

0.9 % or range in use or 8 m, whichever is

larger

8. Minimum range: Better than 25 m

Within 1°

Better than 20 m

1. Radiator:

2. Radiator length:

3. Horizontal beamwidth: 3.9°

4. Vertical beamwidth:

Printed array

60 cm

20°

5. Sidelobe:

Within ± 20° of mainlobe; less than -18 dB

Outside ± 20° of mainlobe; less than -23 dB

9. Markers:

Heading line, Bearing scale, Range ring,

VRM 1/2, EBL 1/2, Tuning indicator,

Cursor, Alarm zone, North mark (heading

sensor input required)

6. Polarization:

Horizontal

7. Antenna rotation speed: 24 rpm

8. Wind resistance:

10. Alphanumeric indication:

Relative wind speed 100 knots (51.5 m/s)

Range, Range ring interval, Pulselength (SP,

MP, LP), Display mode (HU, CU, NU, TM),

Interference rejection (IR1, IR2, IR3), VRM

(1,2), EBL (1, 2), Automatic A/C SEA (A/C

AUTO), Stand-by (ST-BY), Radar alarm:

G(IN)/G(OUT)/G(ACKN), Echo stretch

(ES1, ES2), Range to cursor, Bearing to

cursor, Echo trailing (TRAIL), Trail time,

Trail elapsed time, Navigation data (naviga-

tion input required), heading (HDG, heading

sensor input required)

TRANSCEIVER MODULE

(contained in radome)

1. Transmitting tube:

MG5248, E3571 or

MAF1421B

2. Frequency:

9410 MHz ±30 MHz

3. Peak output power:

4 kW nominal

4. Pulselength & pulse repetition rate:

11. Vibration:

0.08 µs, 2100 Hz (0.125, 0.25, 0.5, 0.75, 1.5)

0.3 µs, 1200 Hz (1.5, 2, 3)

Vibration

5 to 12.5 Hz

12 to 25 Hz

Total amplitude

± 1.6 mm

± 0.35 mm

± 0.10 mm

0.8 µs, 600Hz (3, 4, 6, 8, 12, 16, 24, 36)

5. Warmup time:

6. Modulator:

1:30

FET switching

method

25 to 50 Hz

12. Temperature:

Antenna unit;

Display unit;

13. Humidity:

-25 °C to + 70 °C

-15 °C to + 55 °C

7. I.F.:

60 MHz

8. Tuning:

3Automatic or

manual

Relative humidity 93% or less at + 40°C

14. Waterproofing:

Antenna unit;

IPX6

Display unit;

IPX5

9. Receiver front end:

10. Bandwidth:

MIC (Microwave

IC)

15. Power supply & power consumption:

Tx pulselength 0.3 µs and 0.08 µs: 25 MHz

Tx pulselength 0.8 µs: 3 MHz

12 V, 24 V or 32 VDC (10.2 V to 41.6 VDC)

50W

16. Protection feature:

11. Duplexer:

Circulator with diode

limiter

Protection against reverse polarity, overvolt-

age, overcurrent, and internal fault

17. Compass safe distance:

DISPLAY UNIT

1. Indication system:

2. Display:

PPI raster scan

10-inch rectangular

Download from Www.Somanuals.com. All Manuals Search And Download.

MODEL 1932

MODEL 1942

SPECIFICATIONS

ANTENNA UNIT

1. Radiator:

Slotted waveguide

array

1. Radiator:

Slotted waveguide

array

2. Radiator length:

100 cm

2. Radiator length:

120 cm

3. Horizontal beamwidth: 3.9°

3. Horizontal beamwidth: 1.9°

4. Vertical beamwidth:

27°

4. Vertical beamwidth:

22°

5. Sidelobe:

Within ± 20° of mainlobe; less than -24 dB

Outside ± 20° of mainlobe; less than -30 dB

Within ± 20° of mainlobe; less than -24 dB

Outside ± 20° of mainlobe; less than -30 dB

6. Polarization:

Horizontal

6. Polarization:

Horizontal

7. Antenna rotation speed: 24 rpm

8. Wind resistance:

7. Antenna rotation speed: 24 rpm

8. Wind resistance:

Relative wind speed 100 knots (51.5 m/s)

TRANSCEIVER MODULE

(contained in antenna)

TRANSCEIVER MODULE

(contained in antenna)

1. Transmitting tube:

2. Peak output power:

3. Pulselength & pulse repetition rate:

MG5389 or E3560

6 kW nominal

1. Pulselength & pulse repetition rate:

0.08 µs, 2100 Hz (0.125, 0.25, 0.5, 0.75, 1.5)

0.3 µs, 1200 Hz (1.5, 2, 3)

0.8 µs, 600Hz (3, 4, 6, 8, 12, 16, 24, 36, 48)

0.08 µs, 2100 Hz (0.125, 0.25, 0.5, 0.75, 1.5)

0.3 µs, 1200 Hz (1.5, 2, 3)

0.8 µs, 600Hz (3, 4, 6, 8, 12, 16, 24, 36, 48, 64)

4. Bandwidth:

2. Others:

See MODEL 1832.

DISPLAY UNIT

Tx pulselength 0.3 µs and 0.08 µs: 25 MHz

Tx pulselength 0.8 µs: 5 MHz

5. Others:

See MODEL 1832.

1. Range scale (nm):

Range, Range interval and no. of Rings:

0.125 (0.0625, 2), 0.25 (0.125, 4), 0.75

(0.25, 3), 1 (0.25, 4), 1.5 (0.5, 3), 2 (0.5, 4),

3 (1, 3), 4 (1, 4), 6 (2, 3), 8 (2, 4), 12 (3, 4),

16 (4, 4), 24 (6, 4), 36 (12, 3), 48 (12, 4)

2. Compass safe distance:

DISPLAY UNIT

1. Range scale (nm):

Range, Range interval and no. of Rings:

0.125 (0.0625, 2), 0.25 (0.125, 4), 0.75

(0.25, 3), 1 (0.25, 4), 1.5 (0.5, 3), 2 (0.5, 4),

3 (1, 3), 4 (1, 4), 6 (2, 3), 8 (2, 4), 12 (3, 4),

16 (4, 4), 24 (6, 4), 36 (12, 3), 48 (12, 4), 64

(16, 4)

Standard compass Steering compass

Display unit

Antenna unit

0.75 m

1.1 m

0.6 m

0.8 m

2. Compass safe distance:

3. Others:

See MODEL 1832.

Standard compass Steering compass

Display unit

Antenna unit

0.75 m

1.0 m

0.6 m

0.74 m

3. Power supply & power comsumption:

12 V, 24 V or 32 VDC (10.2 V to 41.6 VDC)

52W

Download from Www.Somanuals.com. All Manuals Search And Download.

INTERFACE IEC 1162 ARPA FUNCTION

(NMEA0183)

(OPTION)

1. Internal Board

2. Acquisition

Instant selection of auto or manual acquisi-

tion in 0.2 - 16 nm, relative speed 100kt.

3. Tracking

ARP-10

(Input)

Own ship's position:

GGA>RMA>RMC>GLL

RMA>RMC>VTG>VHW

Speed:

Automatic tracking of up to 10 acquired

targets betwen 0.1 to 16 nm.

Heading (True):

4. Prediction of target motion

True or relative vectors, time scaled.

5. Past position

HDT>HDG*>HDM*>VHW>VHW*

Heading (Magnetic):

HDM>HDG*>HDT*>VHW>VHW*

10 past positions of tracked targets.

Course (True):

Course (Magnetic):

RMA>RMC>VTG

6. Alarm

Lost target. CPA/

TCPA

VTG>RMA*>RMC*

7. Automatic tracking range

0.1 - 16 nm

8. Target information (one target selected)

Waypoint (Range, Bearing): RMB>BWC>BWR

Loran time difference:

Water depth:

RMA>GLC>GTD

DPT>DBT

¡Distance and bearing from own ship to

target

¡Moving direction and speed

¡CPA (estimated Closest Point of Approach)

and TCPA (estimated Time to CPA)

Water temperature:

XTE:

*: Calculated value based Magnetic variation.

MDA>MTW

RMB>XTE>APB

9. Vector length

10. Plotting interval

30 sec. - 30 min.

15 sec. - 6 min.

(Output)

TLL: On using "TLL" Key.

RSD: An interval of four seconds.

TTM: ARP-10 (Option)

vii

Download from Www.Somanuals.com. All Manuals Search And Download.

EQUIPMENT LIST

Complete Set

MODEL 1832

Name

1 Antenna Unit

2 Display Unit

Type

RSB-0071-057

RDP-118

Code No.

Qty

Remarks

Installation Materials CP03-16900

000-086-843

000-086-844

000-086-845

000-086-846

sig. cable assy. 10 m

sig. cable assy. 15 m

sig. cable assy. 20 m

sig. cable assy. 30 m

(select one)

CP03-16910

1 set

CP03-16920

CP03-16930

4 Accessaries

Spare Parts

FP03-06400

SP03-12200

000-086-872 1 set

000-086-965

1 set

MODEL 1932/1942

Name

Type

Code No.

Qty

Remarks

For MODEL1932

For MODEL1942

RSB-0061-054A

RSB-0062-055A

RDP-118

1 Antenna Unit

Display Unit

Installation Materials

(select one)

CP03-17000

CP03-17010

000-086-848

000-086-849

000-086-850

000-086-851

000-086-872 1 set

000-086-965 1 set

sig. cable assy. 10 m

sig. cable assy. 15 m

sig. cable assy. 20 m

sig. cable assy. 30 m

1 set

CP03-17020

CP03-17030

FP03-06400

SP03-12200

4 Accessaries

5 Spare Parts

Optional Equipment

Name

Type

Code No.

000-086-852

000-013-484

000-013-485

000-013-486

000-013-487

000-030-443

008-439-000

008-476-060

008-445-070

000-030-097

Qty

Remarks

1 ARP Board

Rectifier

ARP-10

PR-62

1832, 100V AC

1832, 110V AC

1832, 220V AC

1832, 230V AC

1932/1942, AC

RU-3423

3 Magnifying Lens

4 Flush Mount Kit

03-121-1500

OP03-145

5 Mounting Bracket (1) OP03-92

For MODEL1832

*See note 1.

6 External Buzzer

Cable Assy.

OP03-21

MJ-A6SPF0003-050

MJ-A6SPF0009-100

000-117-603

000-125-236

MJ-A6SPF0007-100

MJ-A6SPF00012-100

MJ-A6SPF00012-050

MJ-B24LPF0006-005

000-125-237

000-133-817

000-134-424

000-140-438

*See note 2.

Note 1) Even though the display unit meets waterproof standard IPX-5, the connection of external buzzer, radar

plotter and/or remote display can affect waterproofness. Watertight integrity cannot be guaranteed. When these

modification has been done, the display unit should not be mounted where exposed.

Note 2) Conversion from MCP connector (square type) to MJ connector (circular type).

viii

Download from Www.Somanuals.com. All Manuals Search And Download.

Installation Materials

CP03-169xx (Model 1832)

Name

Type

Code No. Qty

Remarks

Select one.

Connector fitted.

1 Signal Cable 10m

Signal Cable 15m

Signal Cable 20m

Signal Cable 30m

MJ-B24LPF0002-100 000-138-972

MJ-B24LPF0002-150 000-138-970

MJ-B24LPF0002-200 000-138-974

MJ-B24LPF0002-300 000-138-973

Power Cable

03S9332

000-138-928

000-862-308

1 set

3 Slotted Head

Hex Bolt

M10 x 25 SUS304

Flat Washer

Spring Washer

EMC core

M10 SUS304

E04SS251512

000-864-131

000-864-261

000-144-673

CP03-170xx (Model 1932/1942)

Name

1 Signal Cable 10m

Signal Cable 15m

Signal Cable 20m

Signal Cable 30m

2 Power Cable

3 Seal Washer

4 Hex Bolt

Type

Code No.

MJ-B24LPF0002-100 000-138-972

MJ-B24LPF0002-150 000-138-970

MJ-B24LPF0002-200 000-138-974

MJ-B24LPF0002-300 000-138-973

Qty

Remarks

Select one.

Connector fitted.

03S9332

000-138-928

000-850-021

000-862-191

000-863-112

000-864-132

000-864-263

000-866-390

CW1053DX

M12 x 60 SUS304

M12 SUS304

10 x 45 SUS

5 Hex Nut

6 Flat Washer

7 Spring Washer

8 Slotted Pin

Spare Parts (SP03-12200)

Name

Type

Code No. Qty

Remarks

For 24/32 VDC

power supply

1 Fuse

2 Fuse

FGBO-A5A AC125V 000-549-064

For 12 VDC power

supply

FGBO 10A AC125V 000-549-065

03-129-1512-0 100-248-780

3 Label (5A )

For 24/32 VDC

Accessories (FP03-06400)

Name

1 Tapping Screw

2 Knob

Type

Code No. Qty

Remarks

6x20 SUS304

FP03-06402

FP03-06401

FP03-04810

000-802-084

008-479-320

008-479-310

008-441-400

3 Hanger

4 Hood Assy.

Download from Www.Somanuals.com. All Manuals Search And Download.

CONFIGURATION OF

MODEL 1832/1932/1942

Antenna Unit

(1932/1942)

(1832)

IEC 1162* (In/Out)

IEC 1162* (In)

Remote Display

FMD-811/1800

NAV

Display Unit

RDP-118

Video Sounder

External Alarm

Buzzer OP03-21

Gyro Converter

AD-100

Auto Plotter

ARP-10

Gyro

Rectifier

PR-62(1832),

RU-3423(1932/1942)

12 VDC: 5A

24 VDC: 10A

*Equivalent to NMEA 0183

: Option

: Local Supply

12/24/32 VDC

115/230 VAC

Note: Even though the display unit meets waterproof standard IPX-5, the connection of external

buzzer, radar plotter and/or remote display can affect waterproofness. Watertight integrity cannot

be guaranteed. When these modification has been done, the display unit should not be mounted

where exposed.

Download from Www.Somanuals.com. All Manuals Search And Download.

1. PRINCIPLE OF OPERATION

1.1 What is Radar?

1.4 How Radar Determines

Bearing

The term “RADAR” is an acronym meaning

RAdio Detection And Ranging. Although the

basic principles of radar were developed dur-

ing World War II, echoes as an aid to naviga-

tion is not a new development.

The bearing to a target found by the radar is

determined by the direction in which the radar

scanner antenna is pointing when it emits an

electronic pulse and then receives a returning

echo. Each time the scanner rotates pulses are

transmitted in the full 360 degree circle, each

pulse at a slightly different bearing from the

previous one. Therefore, if one knows the di-

rection in which the signal is sent out, one knows

the direction from which the echo must return.

1.2 How Ships Determined

Position Before Radar

Before the invention of radar, when running in

fog near a rugged shoreline, ships would sound

a short blast on their whistles, fire a shot, or

strike a bell. The time between the origination

of the sound and the returning of the echo indi-

cated how far the ship was from the cliffs or the

shore. The direction from which the echo was

heard indicated the relative bearing of the shore.

1.5 Radar Wave Speed and

Antenna Rotation Speed

Note that the speed of the radar waves out to

the target and back again as echoes is extremely

fast compared to the speed of rotation of the

antenna. By the time radar echoes have returned

to the scanner, the amount of scanner rotation

after initial transmission of the radar pulse is

extremely small.

1.3 How Radar Determines

Range

Radar determines the distance to the target by

calculating the time difference between the

transmission of a radar signal and the reception

of the reflected echo. It is a known fact that ra-

dar waves travel at a nearly constant speed of

162,000 nautical miles per second. Therefore

the time required for a transmitted signal to

travel to the target and return as an echo to the

source is a measure of the distance to the tar-

get. Note that the echo makes a complete round

trip, but only half the time of travel is needed to

determine the one-way distance to the target.

This radar automatically takes this into account

in making the range calculation.

1.6 The Radar Display

The range and bearing of a target is displayed

on what is called a Plan Position Indicator (PPI).

This display is essentially a polar diagram, with

the transmitting ship’s position at the center.

Images of target echoes are received and dis-

played at their relative bearings, and at their

distance from the PPI center.

With a continuous display of the images of tar-

gets, the motion of the transmitting ship is also

displayed.

Download from Www.Somanuals.com. All Manuals Search And Download.

Heading line

Targets

Range and bearing

of a target, relative

to own ship, are

readable on the PPI.

Own ship

in center

Own ship

(radar)

(A) Bird's eye view of situation

(B) Radar picture of (A)

Figure 1-1 How radar works

Download from Www.Somanuals.com. All Manuals Search And Download.

2. BASIC OPERATION

2.1 Control Description

Omnipad

Brief press:

Shifts cursor, VRM and EBL;

select items and options on

menu.

Displays the data of target

selected with the cursor.

Long press:

Terminates plotting of the target

selected with the cursor.

(1) Acquires the target selected

with the ominipad.

(2) Registers selection on

SELECT

CANCEL

ACQ

ENTER

Opens/closes menus.

menus.

Selects

EBL1/EBL2/VRM1/VRM2.

Sets guard zone area.

Selects radar range.

GUARD

Control:

Adjusts sensitivity.

RANGE

Switch:

EBL/VRM

SELECT

EBL/VRM

CONTROL

Temporarily erases heading

line (and north mark if

displayed).

Enables/erases

EBL1/EBL2/EBL3/EBL4.

GAIN

TLL

Outputs target position data.

Control:

Reduces sea clutter.

Switch*:

HM-OFF

Automatically reduces sea and

rain clutters.

A/C SEA

A/C AUTO

BRILL

(Long press) Shifts your vessel’s

position to cursor location.

(Brief press) Doubles size of

area between your vessel and

location selected by cursor.

Adjusts display brilliance.

A/C RAIN

ST BY

Sets radar in stand-by;

transmits radar pulse.

Control:

Reduces rain clutter.

Switch*:

Displaces the EBL origin.

Turns power on/off.

POWER

Lights when the economy mode

is on.

*Default switch function.

Figure 2-1 Control panel

Download from Www.Somanuals.com. All Manuals Search And Download.

2.2 Display Indication and Markers

Tuning indicator (P.6)

Echo trail elapsed time (P.13)

Heading (requires heading data)

Heading line (P.8)

Echo trail time (P.13)

Guard Zone (P.15)

Zoom (P.11)

AUTO

HDG 234.5°

TRAIL

Range (P.6)

25 : 38

. 125NM

. 0625

Echo Stretch (P.13)

30M

G (OUT)

ZOOM

Range ring interval (P.6)

Pulselength (P.6)

ES1

OFFCENTER

Off center (P.10)

EBL2 (P.9)

Display mode (P.12)

Cursor (P.8, 9)

Guard zone area (P.15)

EBL1 (P.9)

VRM1 (P.8)

Range ring (P.8)

VRM2 (P.8)

North mark (P.8)

A/C

AUTO

EBL

345.6°R

23.0°R

A/C AUTO (P.7)

IR2

VRM

0.048NM

0.100NM

EBL1 bearing (P.9)

EBL2 bearing (P.9)

13.5°R

0.142NM

Interference rejector (P.14)

Cursor bearing (P.9)

VRM1 range (P.8)

VRM2 range (P.8)

Cursor range (P.8)

Figure 2-2 Display indications

Download from Www.Somanuals.com. All Manuals Search And Download.

2.3 Turning the Radar On/Off

2.5 Stand-by

Press the [POWER] key to turn the radar on or

off.

When you won’t be using the radar for an ex-

tended period, but you want to keep it in a state

of readiness, place it in stand-by by pressing

the [STBY TX] key. The display shows

“STBY,” navigation data, or goes into the

economy mode depending on menu setting.

(More on menu operation later.)

The control panel lights and a timer displays

the time remaining for warm up of the magne-

tron (the device which produces radar pulses),

counting down from 1:30 to 0:01.

Economy mode

2.4 Transmitting

The CRT can be set to automatically turn itself

off when in stand-by, to reduce power consump-

tion. This feature is called the “economy mode.”

Power consumption in the economy mode is 28

W. When the economy mode is on, the lamp

next to the [POWER] key lights.

After the power is turned on and the magnetron

has warmed up, STBY (Stand-By) appears at

the screen center. This means the radar is now

fully operational. In stand-by the radar is avail-

able for use at anytime - but no radar waves are

being transmitted.

Navigation data display during

stand-by

Press the [STBY TX] key to transmit.

When transmitting, any echoes from targets

appear on the display. This radar displays ech-

oes in eight tones of green according to echo

strength.

If a navigation aid inputs navigation data to this

radar, navigation data can be displayed during

stand-by. You can turn the navigation data dis-

play on/off through the menu. Figure 2-3 shows

a typical navigation data display during stand-

by.

SPEED

TRIP

Time-to-go to Stand-by

ST-BY

000.3 nm

Speed

10.5

DEPTH

^TEMPERA+^TU1^RE7.3

Depth

125

Trip distance since power on

°C

To Waypoint

bearing Heading

HDG

092.5°

Heading

Course

CRS 180.0°M

Time-to-go to

TO Waypoint

WPT

BRG

RNG

TTG

01:08

45.0° M

12.0NM

OWN SHIP

Bearing TO Waypoint

Range to TO Waypoint

LAT 30°00.00N

LON 135°00.00E

Ship's position in

latitude and longitude

and Loran TDs

36378.1

59096.4

XTE

R 0.3NM

Cross Track Error

Mark "

direction and amount

of error.

" shows

XTE

0.5

1.0

0.5

Figure 2-3 Typical navigation data display

during stand-by

Download from Www.Somanuals.com. All Manuals Search And Download.

Note 1: Availability of a particular display item

depends on incoming data.

2.8 Adjusting Receiver Sensitivity

The [GAIN] control adjusts the sensitivity of

the receiver. It works in precisely the same

manner as the volume control of a broadcast

receiver, amplifying the signals received.

Note 2: When Range to Waypoint reaches 0.1

nm, the WPT mark jumps to dead

ahead even though a difference may

exist between heading and BRG to

WPT.

The proper setting is such that the background

noise is just visible on the screen. If you set up

for too little sensitivity, weak echoes may be

missed. On the other hand excessive sensitivity

yields too much background noise; strong tar-

gets may be missed because of the poor con-

trast between desired echoes and the

background noise on the display.

Note 3: When cross track error exceeds 1 nm

on either side, the XTE mark starts

blinking.

2.6 Selecting the Range

The range selected automatically determines the

range ring interval, the number of range rings,

pulselength and pulse repetition rate, for opti-

mal detection capability in short to long ranges.

To adjust receiver sensitivity, transmit on long

range, and adjust the [GAIN] control so back-

ground noise is just visible on the screen.

You can select which ranges and pulselength

(for 1.5 and 3 mile ranges) to use through the

menu. The range, range ring interval and

pulselength appear at the top left-hand corner

of the display.

2.9 Adjusting the A/C SEA

Control (reducing sea

clutter)

Echoes from waves can be troublesome, cover-

ing the central part of the display with random

signals known as “sea clutter.” The higher the

waves, and the higher the scanner above the

water, the further the clutter will extend. Sea

clutter appears on the display as many small

echoes which might affect radar performance.

(See the left-hand figure in Figure 2-4.) When

sea clutter masks the picture, adjust theA/C SEA

control to reduce the clutter.

To select a range;

Press the [- RANGE +] key. The range and range

ring interval appear at the top left corner on the

display.

Tips for selecting the range

¡ When navigating in or around crowded har-

bors, select a short range to watch for pos-

sible collision situations.

How the A/C SEA control works

The [A/C SEA] control reduces the amplifica-

tion of echoes at short ranges (where clutter is

the greatest) and progressively increases am-

plification as the range increases, so amplifica-

tion will be normal at those ranges where there

is no sea clutter.

¡ If you select a lower range while on open

water, increase the range occasionally to

watch for vessels that may be heading your

way.

2.7 Adjusting Picture Brilliance

The [BRILL] key adjusts the brilliance of the

radar picture in sixteen levels.

Press the [BRILL] key to set the brilliance level.

The current level momentarily appears on the

screen.

Download from Www.Somanuals.com. All Manuals Search And Download.

Adjusting the A/C SEA control

2.10 Adjusting the A/C RAIN

Control (reducing rain

clutter)

The proper setting of the A/C SEA should be

such that the clutter is broken up into small dots,

and small targets become distinguishable.

The vertical beamwidth of the antenna is de-

signed to see surface targets even when the ship

is rolling. However, by this design the unit will

also detect rain clutter (rain, snow, hail, etc.) in

the same manner as normal targets. Figure 2-5

shows the appearance of rain clutter on the dis-

play.

If the control is set too low, targets will be hid-

den in the clutter, while if it is set too high, both

sea clutter and targets will disappear from the

display. In most cases adjust the control until

clutter has disappeared to leeward, but a little

is still visible windward.

1. Confirm that the sensitivity is properly ad-

justed, and then transmit on short range.

Adjusting A/C RAIN

When rain clutter masks echoes, adjust the [A/

C RAIN] control. This control splits up these

unwanted echoes into a speckled pattern, mak-

ing recognition of solid targets easier.

2. Adjust the [A/C SEA] control so small tar-

gets are distinguishable but some clutter re-

mains on the display.

Appearance of

rain clutter

A/C RAIN control adjusted;

rain clutter suppressed.

Sea clutter at

display center

A/C SEA control adjusted;

sea clutter suppressed.

Figure 2-4 How to adjust the A/C SEA control

Figure 2-5 Effect of A/C RAIN

Tip for adjusting the A/C SEA

Note: In addition to reducing clutter, the [A/C

RAIN] control can be used in fine weather

to clarify the picture when navigating in

confined waters. However, with the cir-

cuit activated the receiver is less sensi-

tive. Therefore, turn off the circuit when

its function is not required.

A common mistake is to over-adjust the circuit

so all the clutter is removed. As an example set

up for maximum A/C SEA. You will see how

the center of the display becomes dark. This

dark zone can be dangerous (targets may be

missed), especially if the sensitivity is not prop-

erly adjusted. Always leave a little clutter vis-

ible on the display to be sure weak echoes will

not be suppressed. If there is no clutter visible

on the display, turn off the circuit.

Automatic adjustments of A/C SEA

and A/C RAIN

Push the [A/C AUTO] key. “A/C AUTO” ap-

pears at the bottom left-hand corner of the dis-

play when theA/CAUTO circuit is on. You can

fine tune by adjusting the [A/C SEA], [A/C

RAIN] and [GAIN] controls.

Download from Www.Somanuals.com. All Manuals Search And Download.

2.11 Erasing the Heading Line,

North Mark

VRM

5.3°NM

12.5°NM

EBL

345.6°R

23.0°R

The heading line or north mark (available with

gyrocompass connection) may occasionally

mask a target. To view the target, you can tem-

porarily erase the heading line and north mark

by pressing and holding down the [GAIN (HM

OFF)] control. Release the control to re-display

the marks.

Figure 2-7 Display bottom, showing location

of EBL and VRM readouts

2. Press the [EBL/VRM CONTROL] key to

enable control of the VRM by the omnipad.

3. Operate the omnipad to place the outside

edge of the VRM on the inside edge of the

target.

Heading

line

4. Check the VRM readout at the bottom right-

hand corner of the display to find the range

to the target.

5. To anchor the VRM, press the [EBL/VRM

CONTROL] key.

North mark

To erase the VRM, press and hold down the

[EBL/VRM CONTROL] key about two sec-

onds.

Figure 2-6 Heading line and north mark

2.12 Measuring the Range

Range

6.0 NM

Range ring

interval

2.0

You can measure the range to a target three

ways: by the range rings, by the cursor, and by

the VRM (Variable Range Marker).

Target

Cursor

VRM1

VRM2

By range ring

Count the number of rings between the center

of the display and the target. Check the range

ring interval and judge the distance of the echo

from the inner edge of the nearest ring.

VRM1

range

VRM

4.0 NM

3.0 NM

Cursor range

4.0 NM

VRM2

range

By cursor

Figure 2-8 Measuring range by the cursor,

range rings and VRM

Operate the omnipad to place the cursor inter-

section on the inside edge of the target echo,

The range to the target, as well as the bearing,

appears at the bottom of the display.

Note: You can display the range readout of the

VRM and cursor in nautical miles, statute miles

or kilometers. For details see the next chapter.

By VRM

1. Press the [EBL/VRM SELECT] key to cir-

cumscribe a VRM readout (at the bottom

right-hand corner). Each press of the key

selects the readout of EBL1, EBL2, VRM1

or VRM2 in that order.

Download from Www.Somanuals.com. All Manuals Search And Download.

Note: The bearing readout for the EBL and the

cursor can be displayed in relative or true

bearing (true bearing requires heading

sensor input). For north up and course

up display modes the bearing reference

is always true. For details see the next

chapter.

2.13 Measuring the Bearing

There are two ways to measure the bearing to a

target: by the cursor, and by the EBL(Electronic

Bearing Line).

By cursor

Tips for measuring bearing

Operate the omnipad to bisect the target with

the cursor intersection. The bearing to the tar-

get appears at the bottom of the display.

¡ Bearing measurements of smaller targets are

more accurate; the center of larger target pips

is not as easily identified.

By EBL

¡ Bearings of stationary or slower moving tar-

gets are more accurate than bearings of faster

moving targets.

1. Press the [EBL/VRM SELECT] key to cir-

cumscribe an EBL readout (at the bottom

left-hand corner). Each press of the key se-

lects the readout of EBL1, EBL2, VRM1 or

VRM2 in that order.

¡ To minimize bearing errors keep echoes in

the outer half of the picture by changing the

range scale; angular difference becomes dif-

ficult to resolve as a target approaches the

center of the display.

2. Press the [EBL/VRM CONTROL] key to

enable control of the omnipad.

3. Operate the omnipad to bisect the target with

the EBL.

2.14 Using the Offset EBL

The offset EBL provides two functions: predict

collision course of radar target and measure the

range and the bearing between two targets.

4. Check the EBL readout at the bottom left-

hand corner of the display to find the bear-

ing to the target.

5. To anchor the EBL, press the [EBL/VRM

CONTROL] key.

Predicting collision course

1. Press the omnipad to place the cursor on the

center of the target.

To erase the EBLand its readout, press and hold

down the [EBL/VRM CONTROL] key about

two seconds.

2. Press the [EBL/VRM SELECT] key to

choose EBL1 readout and then press the

[EBL/VRM CONTROL] key.

6.0 NM

2.0

3. Select EBL OFFSET on the menu and press

the [ACQ/ENTER] key.

Target

Cursor

EBL1

4. Press the [EBL/VRM CONTROL] key.

5. Operate EBL1 so it passes through the cen-

ter of the target.

EBL2

If the target tracks along the EBL towards the

center of the display (your vessel’s position),

the target may be on a collision course.

Cursor

Bearing

EBL

40.0° R

135.0° R

EBL1 bearing

40.0°R 4.0 NM

To cancel, select EBL OFFSET and press the

[ACQ/ENTER] key.

Figure 2-9 How to measure bearing by EBL

and cursor

Download from Www.Somanuals.com. All Manuals Search And Download.

6.0 NM

2.0

EBL1

EBL1 origin

(initial position

of target)

VRM1

Target moved

here.

Offset EBL

(EBL1)

EBL

70.0° R

VRM

6.0 NM

EBL1

bearing

VRM1

range

VRM

4.5 NM

EBL1

bearing

70.0° R

VRM1

range

Figure 2-10 Predicting collision course by

using the offset EBL

Figure 2-11 Measuring the range and bearing

between two targets by using the offset EBL

Measuring range and bearing between

two targets

2.15 Shifting (off centering) the

Picture

The procedure which follows shows how to

measure the range and bearing between target

“A” and target “B” in Figure 2-11.

Your vessel’s position can be shifted up to 75%

of the range in use to view the situation around

your vessel without changing the range or size

of targets.

1. Press the omnipad to place EBL1’s origin

(cursor) on the center of target “A”.

2. Press the [EBL/VRM SELECT] key to

choose EBL1 readout and then press the

[EBL/VRM CONTROL] key.

1. Press the omnipad to set cursor where de-

sired.

2. Press the [F1 (A/C SEA)] control if its func-

tion is set for SHIFT (default setting), or se-

lect SHIFT on the menu. OFFCENTER

appears at the top right corner of the display

when the picture is shifted.

3. Select EBL OFFSET on the menu and press

the [ACQ/ENTER] key. EBL1’s origin shifts

to cursor.

4. Press the [EBL/VRM CONTROL] key.

5. Press the omnipad to bisect target “B” with

EBL1. Check the EBL1 readout to find the

bearing between target “A” and target “B”.

6. Press the [EBL/VRM SELECT] key to

choose VRM1 readout. Press the omnipad

to place the outside edge of VRM1 on the

inside edge of target “B.” Check the VRM1

readout to find the range between target “A”

and target “B”.

Cursor

1 Place cursor

where desired.

2 Press SHIFT ZOOM

key to off center display.

7. To cancel, select EBL OFFSET on the menu

and press the [ACQ/ENTER] key.

Figure 2-12 Shifting the picture

Cancelling shifted picture

Press the [F1 (A/C SEA)] control again.

Download from Www.Somanuals.com. All Manuals Search And Download.

2.16 Zoom

The zoom feature allows you to double the size

of the area between your vessel and any loca-

tion within the current range to take a closer

look at an area of interest.

1. Select location with the cursor.

2. Press and hold down the [F1 (A/C SEA)]

control about two seconds if its function is

set for ZOOM (default setting), or select

ZOOM on the menu. Zoom appears at the

top right corner when the ZOOM function is

on.

Cursor

Press [F1] to zoom.

Place cursor

where desired.

Figure 2-13 Zoom function

Note 1: Zoom is cancelled when range or pre-

sentation mode is changed.

Cancelling zoom

Press the [F1 (A/C SEA)] control again.

Download from Www.Somanuals.com. All Manuals Search And Download.

3. MENU OPERATION

3.1 Basic Menu Operation

3.2 Selecting the Presentation

Mode

The menu mostly contains less-often used

functions which once preset do not require

regular adjustment. To open or close the menu,

press the [MENU] key. You can select items

on the menu with the omnipad. The complete

menu appears on page AP-1.

This radar provides four presentation modes:

head-up, course-up, north-up and true motion.

1. Press the [MENU] key.

2. Operate the omnipad to select “MODE”.

3. Press the [ACQ/ENTER] key.

1. Press the [MENU] key to display the main

menu.

With heading sensor connection the display

and the display mode indication at the top left-

hand corner of the display change in the se-

quence of HU (heading up), CU (course up),

NU (north up) and TM (true motion) when

the [ACQ/ENTER] key is pressed. If there is

no heading sensor connection, the display

mode is always HU.

SSel by omnipad & press ENT.S

EBL

OFFSET

RINGS

MODE

SHIFT

ZOOM

ECHO

DISP

DATA

ECHO

TRAIL

STRTCH

Change brill

from 3 to max.

OTHER

ARP-10

4. Press the [MENU] key to close the menu.

Note: The radar begins operation with last se-

lected display mode (except course up) when-

ever the unit is turned on. Note however that

head up is selected when course up was the

last used mode.

Figure 3-1 Main menu

2. Press the omnipad to select the item. For

example, select RINGS.Amessage appears

at the bottom of the menu window.

3. Press the [ACQ/ENTER] key to select set-

ting. Each time this key is pressed,

the message changes. For the RINGS

menu, the message sequence is as shown

below.

Head up

The picture is oriented so the heading line is

at the top of the display. This mode is useful

for navigation in congested waters.

Course up

Change brill from Off to 1.

Change brill from 1 to 2.

Change brill from 2 to 3.

Change brill from 3 to max.

Change brill from max to Off.

The course up mode shows ship’s heading by

the heading line, at the top of the display. To

get heading desired, steer vessel in direction

desired, and then show “CU” at the top left-

hand corner of the display.

North up

North is at the top of the display and the head-

ing line moves with ship’s heading. This mode

is useful for determining ship’s position and

as a navigation monitor on a nautical chart.

The picture is stabilized against yaw of ves-

sel, thereby reducing of target echoes.

Figure 3-2 Messages for RINGS menu

4. Press the [MENU] key to close the menu.

Download from Www.Somanuals.com. All Manuals Search And Download.

True motion

3.4 Echo Trail

True motion displays own ship and moving

objects in their true motion.

You can show the movement of all radar tar-

gets relative to your vessel in afterglow. This

function is useful for alerting you to possible

collision situations.

3.3 Magnifying Long Range

Echoes (echo stretch)

Starting echo trail

Normally, the reflected echoes from long

range targets appear on the display as weaker

and smaller blips even though they are com-

pensated by the radar’s internal circuitry. The

echo stretch function magnifies these small

blips in all ranges. Two types of echo stretch

are available: ES1 which stretches echoes in

bearing direction and ES2 which stretches

them in both range and bearing directions.

1. Press the [MENU] key to open the menu.

2. Select “ECHO TRAIL” by the omnipad.

3. Select “ACTIVATE” by pressing the

[ACQ/ENTER] key.

To turn the echo stretch on or off;

1. Press the [MENU] key to open the menu.

2. Select “ES”.

3. Each press the [ACQ/ENTER] key changes

the echo stretch function in the sequence

of ES1, ES2 and OFF. ES1 or ES2 appears

at the top right-hand corner of the display

when echo stretch is on.

Figure 3-4 How the echo trail feature works

TRAIL, the echo trail time selected (on

“OTHER MENU”) and elapsed time appear

at the top right-hand corner of the display.

Then, afterglow starts extending from all tar-

gets.

Bearing

direction

Bearing

direction

Note: Trails are restarted when range or mode

is changed or zoom or shift is turned on.

Range

direction

Fixed time trail

1. When the elapsed time clock counts up to

the trail time selected, the elapsed time dis-

play freezes.

Echo stretch 2

Echo stretch 1

2. The oldest portions of trails are erased so

only the latest trail, equal in length to the

trail time selected, is shown.

Figure 3-3 Echo stretch

Note: This function magnifies not only tar-

gets but also sea clutter and radar interference.

For this reason be sure the controls for ad-

justment of sea clutter and radar interference

are properly adjusted before activating the

echo stretch.

3. Trail continues.

For example, the one minute trail time is se-

lected. When the elapsed time clock counts

up to 60 seconds, the elapsed time display

freezes at “60,” but the latest one minute of

trail are erased and then trail continuous.

Note: ES2 is not available on Short Range.

Download from Www.Somanuals.com. All Manuals Search And Download.

Continuous trail

The maximum continuous trail time is 99 min-

utes and 59 seconds. When the elapsed time

clock counts up to that time the elapsed time

display is reset to zero and trail begins again.

Cancelling echo trail

Select “OFF (deactivate)” at “ECHO TRAIL”

on the menu.

Changing trail attributes

Trail gradation and trail time can be selected

on the OTHERS menu.

Figure 3-5 Radar interference

Four levels of interference are available, in-

cluding off; IR1, IR2, IR3 and OFF. IR3 pro-

vides the highest level of rejection.

Table 3-1 Trailing attributes

Item in

OTHERS

1. Press the [MENU] key.

Description

2. Select “OTHER MENU” and press the

[ACQ/ENTER] key.

Trails can be shown in

single or multiple

gradations. Multiple paints

trails getting thinner with

time just like the afterglow

on an analog PPI radar.

[ OTHERS ]

Select item by omnipad

and press ENTER key.

Trail

Tone

¡. Panel Dimmer

2 . Mark Brill

Single

Multiple

3 . HD Mark

4 . Characters

5 . Trail Tone

6 . Int Reject

Single

Off

Short

Off

15S

Multi

Trail time can be set for 15

sec., 30 sec., 1 min., 3 min.,

6 min., 15 min., 30 min., or

continuous.

7 . Pulselength

8 . Noise Reject

9 . Trail Time

Long

30S

Trail Time

3M 6M

15M 30M

Manu

Cont

10. Tune

Auto

Off

11. Disp Data

12. WPT Mark

13. EBL Ref

Nav

ARP All

Off

Rel

True

3.5 Suppressing Radar

Interference

14. VRM Unit

15. Watchman

16. STBY Disp

17. Guard Mode

18. Own Position

19. Cursor Posi

20. Alm sense LV

21. Dead Sector

22. Range

Off

10M 20M

Nav

Norm

Econo

Out

L/L

Radar interference may occur when near an-

other shipborne radar operating in the same

frequency band as your radar. Its on-screen

appearance is many bright dots either scat-

tered at random or in the form of dotted lines

extending from the center to the edge of the

display. Figure 3-5 illustrates interference in

the from of curved spokes. Interference ef-

fects are distinguishable form normal echoes

because they do not appear in the same place

on successive rotations of the antenna.

R/B

Low

Off

L/L

Mid

Hig

1/ 2 3/4

1/8 1/4

1.5

⁄

‹

23. Self Test

24. Installation Setup

Figure 3-6 OTHER MENU

Download from Www.Somanuals.com. All Manuals Search And Download.

Out alarm

3. Select “6. IntReject”.

The alarm sounds on targets exiting the guard

zone. “G (OUT)” appears at the top right-hand

corner when the Out alarm is selected.

4. Select level desired by operating the

omnipad.

5. Press the [ACQ/ENTER] key.

6. Press the [MENU] key to close the menu.

IR and level selected appears at the bottom

right corner on the display when the interfer-

ence rejection circuit is turned on.

Dashed line:

no alarm

Guard

zone

3.6 Selecting Pulsewidth

IN ALARM

OUT ALARM

Pulsewidth is the transmission time of a single

radar pulse. The longer the pulsewidth the

greater the direction range capability, however

range accuracy and range resolution are re-

duced.

Figure 3-7 In and Out alarm

Setting a guard zone

Preparation

1. Press the [MENU] key, and then select

“OTHER MENU” and pressing the [ACQ/

ENTER] key.

Pulsewidth can be selected to short or long

on the 1.5 and 3 nautical mile ranges.

1. Press the [MENU] key.

2. Select “17. Guard Mode” and “In” (alarm

on target entering zone) or “Out” (alarm

on target exiting zone) by operating the

omnipad.

2. Select “OTHER MENU” and press the

[ACQ/ENTER] key.

3. Select “7. Pulselength”.

3. Press the [ACQ/ENTER] key.

4. Press the [MENU] key to close the menu.

To set a guard zone

4. Select Short or Long by pressing the

omnipad.

5. Press the [ACQ/ENTER] key to select.

6. Press the [MENU] key to close the menu.

1. Mentally create the guard zone you want

to set.

3.7 Guard Alarm

2. Operate the omnipad to set the cursor on

pointAor B. Press the [GUARD] key. “*G

(IN)” or “*G (OUT)”, with asterisk blink-

ing, appears at the top right-hand corner of

the display. See Figure 3-8 (2). (The aster-

isk indicates the guard zone is partially set.)

The guard alarm allows the operator to set the

desired range and bearing for a guard zone.

When ships, islands, landmasses, etc. violate

the guard zone an audible alarm sounds and

the offending target brinks to call the

operator’s attention.

3. Operate the omnipad to set the cursor on

point C or D. See Figure 3-8 (3).

Selection of guard zone type

4. Press the [GUARD] key. The asterisk dis-

appears. See Figure 3-8 (4).

The guard alarm can be set to sound when a

target either enters or exits the guard zone.

You can select which type of guard alarm you

want through the menu.

In alarm

The alarm sounds on targets entering the guard

zone. “G (IN)” appears at the top right-hand

corner when the In alarm is selected.

Download from Www.Somanuals.com. All Manuals Search And Download.

¡ Atarget echo does not always mean a land-

mass, reef, ships or surface objects but can

imply returns from sea surface or precipi-

tation. As the level of these returns varies

with environment, the operator should

properly adjust the A/C SEA, A/C RAIN

and GAIN to be sure the alarm system does

not overlook target echoes.

Asterisk blinking

Guard zone

* G (IN)

to set

Drag cursor

here.

(1) Mentally create

the guard zone to set.

(2) Drag cursor to

top left corner of

zone and press

[GUARD].

3.8 Watchman

The watchman function periodically transmits

the radar for minute to check for targets in a

guard zone. If it finds change in the zone from

the previous transmission it sounds the radar

continuously. This feature is useful when you

do not need the radar’s function continuously

but want to be alerted to radar targets in a spe-

cific area.

G (IN)

Guard

zone

Drag cursor

here.

(3) Drag cursor to

(4) Guard zone

completed.

bottom right corner

of zone and press

[GUARD].

St-by

1 min

5, 10 or

20 min

1 min

5, 10 or

20 min

Figure 3-8 How to set the guard zone

Watchman

starts.

Silencing the audible alarm

Any radar targets violating the guard zone will

trigger the audible alarm. You can silence the

audible alarm by pressing the [GUARD] key.

When this is done, “G(ACKN)” replaces

“G(IN).” This means the alarm is

acknowledgrd. Press the key again to reacti-

vate the alarm.

Figure 3-9 How watchman works

How watchman works

When the time selected for the watchman rest

period has elapsed, the radar automatically

transmits for one minute to check the condi-

tion inside the guard zone. If there is no

change, the radar goes into stand-by

(“WATCHMAN” appears during stand-by.) If

there is change, the radar sounds the audible

alarm, cancels the watchman function and

transmits continuously.

Cancelling the guard zone and guard

alarm

Press and hold down the [GUARD] key until

the guard zone disappears.

Notes on the guard alarm

Turning on watchman

¡The alarm is a useful anti-collision aid, but

does not relieve the operator of the respon-

sibility to also keep a visual lookout for

possible collision situations.

1. Create a guard zone (usually 360 degrees)

with the guard alarm function.

2. Press the [MENU] key.

3. Select “OTHER MENU”.

4. Press the [ACQ/ENTER] key.

5. Select “15. Watchman”.

¡When the radar range is less than one half

of the guard zone range, the guard zone dis-

appears and “G (IN)” or “G (OUT)” ap-

pears in inverse video. If this happens, raise

to re-display the guard zone.

6. Press the omnipad to select watchman rest

period; 5 minutes, 10 minutes or 20 min-

utes.

Download from Www.Somanuals.com. All Manuals Search And Download.

“WATCHMAN” appears at the top of the

screen, the radar transmits for one minute to

check for targets inside the guard zone, and

then the CRT shuts off and the radar goes into

stand-by.

¡range, bearing and time-to-go to both

waypoint selected on the navigator and the

cursor

¡speed.

(If the navigation input includes destination

data, waypoint position is denoted on the ra-

dar display by a dashed ring.)

Cancelling watchman

Go into the “OTHERS” menu, and set “15.

Watchman” for off.

To turn navigation data on or off;

1. Press the [MENU] key.

Note 1: Watchman can be used without a

guard zone.

2. Select the “DISP DATA”.

3. Press the [ACQ/ENTER] key.

Note 2: The alarm sounds just before the ra-

dar starts and stops transmitting.

4. Press the [ACQ/ENTER] key to select the

message for Navigation display.

3.9 Displaying Navigation Data

5. Prss the [ACQ/ENTER] key to set.

Navigation data can be displayed at the screen

bottom if this radar receives navigation input

in IEC 1162 format. Navigation data include

6. Press the [MENU] key to close the menu.

¡position in latitude and longitude or Lo-

ran-C time difference

AUTO

TRAIL

HDG 234.5°

25:38

30M

. 125NM

G (OUT)

ZOOM

ES1

0625

Waypoint Mark

A/C

AUTO

EBL

345.6°R

23.0°R

VRM

0.048NM

1.5 NM

13.5°R

0.06

0.142NM

0.100NM

OWN SHIP

34° 56. 12N

135° 34. 56E

SPD 35.0KT

CURSOR

WAYPOINT

0.09 NM

Navigation

Data

34° 29. 98N

136° 35. 77E

TTG 01:00

50.0°M

TTG 00:20

Figure 3-10 Typical navigation data display

Download from Www.Somanuals.com. All Manuals Search And Download.

3.10 OTHER MENU Description

The following summarizes the OTHER MENU.

Table 3-2 OTHER MENU Description

Item

1. Panel Dimmer

2. Mark Brill

3. HD Mark

4. Charactors

5. Trail Tone

6. Int Reject

7. Pulselength

8. Noise Reject

9. Trail Time

10. Tune

Description

Select level of panel backlight.

Select brilliance of VRM, EBL, cursor, guard zone and WP marks.

Select brilliance of heading mark.

Select brilliance of charactors.

Select brilliance of echo trails.

Select level of interference rejection.

Select pulselength for 1.5 and 3 mile ranges.

Select “On” to reject noise.

Select the trail time.

Select automatic or manual tuning.

To tune manually;

1. Select “Menu” by the omnipad.

2. Press the [ENTER] key to enable manual tuning.

3. While pressing and holding down the [GAIN] control, operate

the omnipad.

4. Press the [ENTER] key.

“MANUAL” appears at the top right-hand corner when manual

tuning is in effect.

11. Disp Data

Select the down sourse to display.

12. WPT Mark

13. EBL Ref

Select “On” to display the waypoint mark.

select EBL reference for relative or true.

14. VRM Unit

Select distance unit of VRM and cursor for nm, km or sm.

15. Watchman

16. STBY Disp

Turn watchman on (set rest period) or off.

Select the display on stand-by; display “STBY” or navigation data,

or go into the economy mode.

17. Guard Mode

18. Own Position

19. Cursor Posi

20. Alm sense LV

21. Dead Sector

22. Range

Select condition which triggers guard alarm; in or out.

Display the cursor position in strength whitch trigger guard alarm.

Dispalay the cursor position in range/bearing or lat/long.

Select minimau echo strength which triggers guard alarm.

Select “On” to display the dead sector.

Select ranges in use.

23. Self Test

Test keys, ROM and RAM, check antenna rotation speed, and

display program no.

24. Installation Setup Go to the installation setup menu.

Download from Www.Somanuals.com. All Manuals Search And Download.

3.11 Function Keys

3.12 Suppressing Noise

The function keys (F1 and F2) work like the

auto-dialing feature of a telephone, automati-

cally executing the function assigned to them.

The function can be turned off by pressing

appropriate function key again.

Electrical noise can be suppressed by turning

on “8. NOISE REJ” on the OTHERS menu.

3.13 Adjusting Brilliance of

Markers

Default settings

“2. Mark Brill” on the OTHER menu adjusts

the brilliance of markers such as the cursor.

F1: Shift (brief press) or Zoom (long press)

F2: Ring brillience

3.14 Outputting Target Position

How to register menu items

1. Press the [MENU] key.

Target position data can be output to the

navaid in IEC 1162 format. Press and hold

down the [TLL] key to output the data. This

function requires position data and heading

signal.

2. Press [A/C SEA] (F1) or [A/C RAIN] (F2)

to open the function menu.

[ SETTING FOR F1 KNOB ]

SSel by omnipad & press ENT.S

EBL

OFFSET

SHIFT/

ZOOM

SHIFT

ZOOM

DISP

DATA

STBY

DISP

RINGS

MODE

INT

REJECT

NOISE

REJECT

PULSE

LENGTH

ECHO

STRTCH

TRAIL

TONE

TRAIL

ON/OFF

TRAIL

TIME

TUNE

A/M

ALARM

LEVEL

GUARD

IN/OUT

DEAD

SECTOR

WATCH

MAN

PANEL

DIMMER

MARK

BRILL

CHARA

CTERS

OTHER

VRM

UNIT

EBL

REF

NAV

TALKER

WPT

MARK

OWN

POSITN

CUSOR

POSITN

VECTOR

REF

VECTOR

LENGTH

HIS

TORY

COLLI

SION

AUTO

ACQ

FNCTN

Figure 3-11 Function menu

3. Select function desired.

4. Press the [ACQ/ENTER] key.

5. Press the [MENU] key to close the menu.

Download from Www.Somanuals.com. All Manuals Search And Download.

sented on both sides of the true echo at the same

range, as shown in Figure 4-2. Side-lobes show

usually only at short ranges and from strong tar-

gets. They can be reduced through careful re-

duction of the sensitivity or proper adjustment

of the A/C SEA.

4. FALSE ECHOES

Occasionally false echoes appear on the screen

at positions where there is no target. In some

cases the effects can be reduced or eliminated.

The operator should familiarize himself or her-

self with the appearance and effects of these

false echoes, so as not to confuse them with

echoes from legitimate contacts.

True echo

Main-lobe

Side-lobe

4.1 Multiple Echoes

Sprious

target

Multiple echoes occur when a short range,

strong echo is received from a ship, bridge, or

breakwater. A second, a third or more echoes

may be observed on the display at double, triple

or other multiples of the actual range of the tar-

get as shown in Figure 4-1. Multiple reflection

echoes can be reduced and often removed by

decreasing the sensitivity or properly adjusting

the A/C SEA.

Antenna

Figure 4-2 Side-lobe echoes

4.3 Indirect Echoes

Indirect echoes may be returned from either a

passing ship or returned from a reflecting sur-

face on your own ship, for example, a stack. In

both cases, the echo will return from a legiti-

mate contact to the antenna by the same indi-

rect path. The echo will appear on the same

bearing of the reflected surface, but at the same

range as the direct echo. Figure 4-3 illustrates

the effect of an indirect echo. Indirect echoes

may be recognized as follows:

True

echo

• they usually occur in a shadow sector

Own ship

Multiple

echo

• they appear on the bearing of the obstruc-

tion but at the range of the legitimate con-

tact

• when plotted, their movements are usually

abnormal, and

Figure 4-1 Multiple echoes

• their shapes may indicate they are not direct

echoes.

4.2 Side-lobe Echoes

Every time the antenna rotates, some radiation

escapes on each side of the beam—called

“side-lobes.” If a target exists where it can be

detected by the side-lobes as well as the

main-lobe, the side-lobe echoes may be repre-

Download from Www.Somanuals.com. All Manuals Search And Download.

4.4 Blind and Shadow Sectors

Heading

line

Direct

path

Funnels, stacks, masts, or derricks in the path

of antenna may reduce the intensity of the ra-

dar beam. If the angle subtended at the antenna

is more than a few degrees a blind sector may

be produced. Within the blind sector small tar-

gets at close range may not be detected while

larger targets at much greater ranges may be

detected. See Figure 4-4.

Target

Indirect

path

Obstruction

(mast, funnel.

etc.)

Antenna

Target

True

echo

Indirect

path

Indirect

echo

Vessel taller

Direct

path

Mast, etc. in

than wharf

path of radar

beam

Wharf

Heading

line

Own

ship

True

echo

Bridge

Wharf

Blind sector

(no echo)

Indirect

echo

Size of blind sector

depends on target

size and range.

Indirect

echo

Figure 4-4 Blind and shadow sectors

Figure 4-3 Indirect echoes

Download from Www.Somanuals.com. All Manuals Search And Download.

5. MAINTENANCE & TROUBLESHOOTING

This chapter tells you how to keep your radar

in good working order. Before reviewing this

5.1 Preventative Maintenance

chapter please read the safety information which

follows.

Regular maintenance is important for good per-

formance. Always keep the equipment as free

as possible from dirt, dust, and water splashes.

Make sure all screws securing the components

are properly tightened.

DANGER

Turn off the power before

performing any maintenance or

troubleshooting procedure.

A maintenance program should be established

and should at least include the items listed in

table 5-1.

Hazardous voltages can shock, burn or cause death.

Only qualified personnel totally famillier with electrical

circuits should work inside the units.

5.2 Replacing the Fuse

The fuse in the power cable protects the equip-

ment against reverse polarity or ship’s mains,

overcurrent, and equipment fault. If the fuse

blows, find the cause before replacing it. Never

use an incorrect fuse – serious damage to equip-

ment may result and void the warranty.

RF RADIATION HAZARD

The radar antenna emits high frequency

radio radiation which can be harmful,

particularly to your eyes.

Never look directly into the antenna from a distance of

less than two feet when the radar is in operation as

you could injure the cornea of your eyes. Always

make sure the radar is set to stand-by or is turned off

before starting work on the antenna unit.

12 V:

10 A fuse

24/32 V: 5 A fuse

Table 5-1 Recommended maintenance program

Period

Item

Check point

Remarks

3 to 6

months

Exposed

nuts and

bolts on

Check for corroded or loosened

nuts and bolts. If necessary,

clean and repaint them thickly.

Sealing compound may be used

instead of paint. Apply a small

amount of grease between nuts

and bolts for easy removal in

future.

antenna unit Replace them if heavily

corroded.

Antenna

radiator

Check for dirt and cracks on

radiator surface. Thick dirt

Do not use plastic solvent

(acetone) for cleaning. If you

need to remove ice from

antenna unit, use a wooden

(1932/1942) should be wiped off with soft

cloth dampened with fresh

water. If a crack is found, apply a hammer or plastic head

slight amount of sealing

compound or adhesive as a

temporary remedy, then call for

hammer. Crack on the unit may

cause water ingress, causing

serious damages to internal

Radome

cover

(1832)

Check for wear. Permanent

damage to the antenna's internal temporarily repaired by using a

circuitry will result if water leaks

into the radome.

If a crack is found it should be

small amount of sealing

compound or adhesive. You

should then contact your dealer

for service.

6 months Display unit

to 1 year connectors

Check for tight connection and

corrosion.

If corroded, contact your dealer

for replacement.

Download from Www.Somanuals.com. All Manuals Search And Download.

5.3 Troubleshooting

Table 5-2 contains simple troubleshooting pro-

cedures which you can follow to try to restore

normal operation. If you cannot restore normal

operation, do not attempt to check inside any

unit of the radar system.Any repair work is best

left to a qualified technician.

Table 5-2 Troubleshooting table

If...

But...

Then...

you pressed the

[POWER] key to

turn on the radar

the control panel

does not light

• try adjusting the control panel back-

lighting on the OTHERS menu.

• battery may have discharged.

• check fuse in power cable.

nothing appears on

the display or display

contrast is poor

• try adjusting the brilliance.

characters are

distorted

• request service.

the radar has

warmed up and you

pressed the

[STBY TX] key to

transmit

the antenna does not

rotate

• the problem may be in antenna unit.

Request service.

characters and

indications are

abnormal

• have a qualified technician check the

set.

you have adjusted

the gain with A/C

RAIN and A/C SEA

off

neither noise nor

targets appear

(indications and

markers do)

• check signal cable for damage.

neither indications nor • check signal cable for damage.

markers appear

(noise and targets do)

the sweep (radial line • the problem may be in the antenna

sweeping around the

display) is not

unit. Request service.

synchronized with

antenna rotation

there is no change in

sensitivity

• request service.

a key is pressed

nothing happens

• key may be faulty. Request service.

Download from Www.Somanuals.com. All Manuals Search And Download.

7. Press the [MENU] key to back to the selftest

menu.

5.4 Self Test

The self test facility checks the keyboard, ROM

and RAM for proper operation.

8. To escape from the test, press the [MENU]

key.

1. Press the [MENU] key.

2. Select “OTHER MENU”.

5.5 Life Expectancy of

Magnetron

3. Select “23. Self Test” and press the [ACQ/

ENTER] key. The following display appears.

The following table shows the life expectancy

of the magnetron.

[ Self Test ]

Key test: Press each key and

check on-screen indication

lights.

Table 5-3 Life expectancy of magnetron

ARP-10 TEST

OK 18990871xx

ROM

RAM

SPEED OK NAV 0.0KT

Model

Type

Code no.

Life expectancy

COURSE OK

TRIGGER NG

167.6°

E3571

000-137-527

VIDEO

1832/

1932

MG5248

MAF1421B

E3560

000-116-121

–

2,000 - 3,000 hours

(Including stand-by)

MIN-HIT

0003

SCAN-TIME

MAN-ACQ

AUTO-ACQ

FE-DATA1

FE-DATA2

0854

0000

000-139-050

000-135-146

1942

MG5389

Program No.: 0359139-1XX

ROM

RAM

: N

: OK

Hours in use: 000006.9H

Tx hours : 000001.1H

Figure 5-1 Self test screen

4. The ROM and RAM are automatically

checked. If NG (No Good) appears to the

right of ROM or RAM indication, contact

your dealer for advice.ARP-10 TEST results

appear only when optional ARP-10 board is

mounted.

5. To check the keyboard, press any key ex-

cept the omnipad, ACQ and power keys. Its

corresponding location on the display lights

in black if the key is operating properly.

6. Press the [ACQ] key to check the display

circuit. The following pattern should appear.

Figure 5-2 Test pattern

Download from Www.Somanuals.com. All Manuals Search And Download.

6. INSTALLATION

¡The compass safe distance should be ob-

served to prevent deviation of the magnetic

compass.

This chapter provides the procedures neces-

sary for installation. Installation mainly con-

sists of the following:

¡siting and mounting the display unit and

Model Standard compass

Steering compass

0.7 m

antenna unit

1832

1932

1942

0.9 m

1.1 m

1.0 m

0.8 m

0.74 m

¡connection of the signal cable and the

power cable

¡establishing the ground

¡checking the installation, and

¡adjustments.

¡Do not paint the radome (Model 1832) or

radiator aperture (Model 1932, 1942), to

ensure proper emission of the radar waves.

¡When this radar is to be installed on larger

vessels, consider the following points:

6.1 Antenna Unit Installation

(1) The signal cable run between the an-

tenna and the display comes in lengths

of 10 m, 15 m, 20 m and 30 m. What-

ever length is used it must be unbro-

ken; namely, no splicing allowed.

Siting, handling considerations

¡ The antenna unit is generally installed either

on top of the wheelhouse or on the radar mast

on a suitable platform. Locate the antenna

unit where there is a good all-round view

rigging intercepting the scanning beam.Any

obstruction will cause shadow and blind

sectors. Amast for instance, with a diameter

considerably less than the width of the

radicator, will cause only a small blind sec-

tor, but a horizontal spreader or crosstrees in

the same horizontal plane as the antenna unit

would be a much more serious obstruction;

you would need to place the antenna unit well

above or below it.

(2) Deposits and fumes from a funnel or

other exhaust vent can adversely affect

the aerial performance and hot gases

may distort the radiator portion. The

antenna unit must not be mounted

where the temperature is more than

70°C.

Mounting (Model 1832)

¡ It is rarely possible to place the antenna unit

where a completely clear view in all direction

is available. Thus, you should determine the

angular width and relative bearing of any

shadow sectors for their influence on the

radar at the first opportunity after fitting.

(The method of determining blind and

shadow sectors appears later in this chapter.)

¡ If you have a radio direction finder on your

boat, local its antenna clear of the antenna

unit, to prevent interference to the direction

finder.Aseparation of more than two meters

is recommended.

Figure 6-1 Typical antenna unit location

Unpacking the antenna unit

1. Open the antenna unit packing box care-

fully.

¡To lessen the chance of picking up electri-

cal interference, avoid where possible rout-

ing the signal cable near other onboard

electrical equipment. Also avoid running

the cable in parallel with power cables.

2. Unbolt the four bolts at the base of the ra-

dome to remove the radome cover.

Download from Www.Somanuals.com. All Manuals Search And Download.

SHIP'S BOW

Radome cover

CABLE

ENTRY

Figure 6-2 Antenna unit

4-Ø12 HOLES

Mounting platform

Holes for antenna unit:

FLAT WASHER

SPRING WASHER

M10 X 25 HEX BOLT

The mounting surface must be parallel with

the waterline and provided with five holes

whose dimensions are shown in the outline

drawing attached at the end of this manual.

PLATFORM

Antenna base plate

The unit is adjusted so a target echo returned

from the bow direction will be shown on the

zero degree (heading line) position on the

screen. When drilling holes, be sure they are

parallel with the fore and aft line.

Effective

thread length

Packing

Radome

25 mm

5 - 10 mm

Platform

Flat

washer

3. Prepare a platform of 5 to 10 millimeters

in thickness for the antenna unit. (A mount-

ing bracket for mounting the antenna unit

on a sailboat mast is optionally available.

See the below for details.) Find the cable

entry on the radome base. Next, position

the radome base so the cable entry faces

the stern direction. This alignment must be

as accurate as possible. Fasten the radome

base to the mounting platform with four

each of M10 x 25 hex bolts, flat washers

and spring washers.

Spring

washer

Apply silicone sealant

M10 x 25

Hex bolt

Figure 6-4 How to fasten the radome base

to the mounting platform

Wiring and final preparation

4. Drill a hole of at least 20 millimeters di-

ameter through the deck or bulkhead to run

the signal cable between the antenna unit

and the display unit. (To prevent electrical

interference avoid running the signal cable

near other electrical equipment and in par-

allel with power cables.) Pass the cable

through the hole. Then, seal the hole with

sealing compound for waterproofing.

Mask size;

φ70 to φ125 mm

5. Remove the shield cover in the radome.

Type: OP03-92

Code no.: 008-445-070

Figure 6-3 Assembling the sailboat mast

mounting bracket (option)

Download from Www.Somanuals.com. All Manuals Search And Download.

6. Remove the cable clamping plate by un-

fastening four screws and removing a gas-

ket.

10. Attach the EMC core supplied as shown

below.

J801

Pan head screws

M4x8 4 pcs.

MD9208

J806

J802

J805

J804

Cable clamping plate

Shield cover

J803

Cable

entrance

Cable

clamping

plate

Pan head

Gasket

screws

M4x8 7 pcs.

Shield cover

Motor

Pan head

screws

M4x8 7 pcs.

EMC core

E04SS251512

(Above cable

clamping

plate)

J613

J611

PTU-9335

Figure 6-5 Antenna unit, inside view

IF9214

7. Pass the cable through the hole at the bot-

tom of the radome base.

8. Secure the cable with the cable clamping

plate and gasket. Ground the shield and

vinyl wire by one of the screws of the cable

clamping plate.

Figure 6-8 How to attach EMC core

11. Fix the shield cover. Do not pinch the

cable.

12. Attach the radome cover, aligning triangle

mark on radome cover with that on ra-

dome base.

9. Connect the wire to the RF unit.

to one of the screws

of the cable clamping plate

Radome cover

9-pin connector:

to J801 on MD-9208

Radome base

4-pin connector:

to J802 on MD-9208

Figure 6-9 How to position the radome

cover

13-pin connector:

to J611 on IF-9214

13. Loosely fasten the radome fixing bolts.

You will tighten them after confirming

magnetron heater voltage.

Figure 6-6 Signal cable, antenna unit side

J802

J801

MD-9208

Cable

entry

Mounting (Model 1932, 1942)

PTU-9335

Figure 6-10 Typical antenna unit mounting

locations

J611

IF-9214

1. Drill four fixing bolt holes (13 millimeters

dia.), one cable entry hole (approx. 50 mil-

limeters dia.) in the mounting platform. See

the outline drawing.

Figure 6-7 RF unit

Download from Www.Somanuals.com. All Manuals Search And Download.

2. Detach the antenna housing cover from the

antenna housing by loosening four fixing

bolts. The antenna housing cover fitted with

the transceiver module can be stored in a

convenient place until the wiring to the an-

tenna unit is done.

Connections

Only the signal cable runs from the display

unit to the antenna unit. Make the hole for

passing the cable through the bulkhead or deck

at least 20 millimeters diameter. In order to

minimize the chance of picking up electrical

interference, avoid where possible routing the

signal cable near other onboard electrical

equipment. Also, avoid running the cable in

parallel with power cables. Pass the cable

through the hole and apply sealing compound

around the hole for waterproofing.

3. Place the antenna housing on the mount-

ing platform and orient it as shown in Fig-

ure 6-11.

The procedure for connecting the signal cable

to the antenna unit is as following.

Ship's

bow

Ship's

bow

1. Through a pipe or waterproof cable grand

fitted on the wheelhouse top or bulkhead.

Figure 6-11 How to orient the antenna unit

4. Insert four M12 x 60 hex head bolts with

the seal washers from inside the antenna

housing, to prevent the bolts from contact-

ing the transceiver module. Install the seal

washer with the larger diameter next to the

head of the bolt. Coat flat and spring wash-

ers and nuts and then use them to fasten

the antenna housing to the mounting plat-

form. Finally, coat exposed parts of nuts,

bolts and flat and spring washers as shown

in Figure 6-12.

2. Unfasten four screws at bottom of the scan-

ner base to remove the cable gland assem-

bly.

3. Pass the signal cable through the antenna

base and the cable gland assembly (re-

moved in step 2.)

4-M4x10

CLAMP PLATE

PACKING

FLAT

WASHER

Note: Tighten the bolts by their nuts to pre-

vent damage to the seal washer. Do not turn

the bolts to secure the antenna housing.

Figure 6-13 Passing the signal cable

through the antenna housing

Hex head bolt

(M12 x 60)

Seal washer

4. Fasten the cable gland assembly.

5. Connect the lead wires to RTB-9100 in the

antenna housing by referring to the Inter-

connection Diagram. Fasten the ground

washer at the bottom of the antenna hous-

ing as shown in Figure 6-13.

Scanner

housing

Silicone

sealant

Flat washer

Spring washer

Hex head nut

Figure 6-12 How to mount the antenna

housing

GROUND WIRE

Fasten

shield here.

RTB-9100

Figure 6-14 Connection in the antenna

housing

Download from Www.Somanuals.com. All Manuals Search And Download.

Final preparation

Scanner

radiator

Apply silicone sealant

into threaded holes.

O-ring

1. Place the antenna housing cover on the

housing. Loosely fasten the four fixing

bolts on the cover.

Radiator bracket

Flat washer

Scanner housing

cover

Spring washer

Hex head bolt

(M8 x 30)

Fixing

holes

Coat bolts with

silicone sealant.

Pinning

hole

Note: Apply anticorrosive sealant

to hached areas, antenna bracket

for XN12A type radiator.

Figure 6-18 Fastening the radiator to the

radiator bracket

Figure 6-15 Fastening the antenna

housing cover

4. Open the antenna housing cover and fix the

stay as shown in Figure 6-19.

2. Apply grease to the two slot pins. Using a

wooden hammer to prevent damage to

paint, insert slotted pins into the pinning

holes until the pin head is flush with the

scanner housing surface.

5. One end of the cable with 15-, 9- and 7-

way plugs has already been connected to

RTB-9100 inside the scanner housing.

Mate the 15- and 9-way plugs with jacks

J812 and J811 on the transceiver module,

respectively. Connect the 7-way plug to

jack J701 on the MP Board. Secure the

cable between RTB-9100 and J701 with the

cable tie as shown in Figure 6-19.

Radiator

bracket

Face in

stern direction.

Ship’s

bow

Cable

tie

Slotted pin

MP Board

Figure 6-16 How to insert slot pins

J812

Fasten ground

wire here.

J811

Stay

3. Now is the time to fix the radiator to the

radiator bracket. Apply anticorrosive seal-

ant (silicone sealant) to hatched areas, to

prevent corrosion. See the figure below.

Apply silicone sealant into threaded holes

on the scanner radiator. Remove the cap

on the radiator bracket and orient the ra-

diator bracket as shown in Figure 6-13.

Apply grease to the O-ring and set it to the

center of the radiator bracket. Coat the ra-

diator fixing bolts with silicone sealant.

Fasten the radiator to the radiator bracket

with the FURUNO logo on the radiator fac-

ing ship’s bow.

Figure 6-19 Antenna unit, cover opened

6. Fasten the ground wire (black) of the sig-

nal cable to the chassis as shown in Figure

6-19.

7. Loosely fasten the antenna housing cover.

You will tighten the fixing bolts after con-

firming magnetron heater voltage.

Groove

Waveguide

Note: Apply anticorrosive

sealant to hatched areas,

antenna radiator bottom

view of XN8 type radiator.

Figure 6-17 How to coat radiator with

silicone sealant for XN8 type radiator

Download from Www.Somanuals.com. All Manuals Search And Download.

Mounting

6.2 Display Unit Installation

The display unit is designed to be mounted

on a tabletop or bulkhead.

Mounting considerations

When selecting a mounting location for the

display unit keep in mind the following points.

1. Using the hangar as a template, mark screw

locations in the mounting location.

¡Even though the display unit is waterproof,

it is recommended that the display unit

must be mounted inside an enclosed cabi-

net.

2. Fix the hanger to the mounting location

with five M6 tapping screws (supplied).

3. Fit the knob bolts to the display unit. In-

stall the display unit in the hunger. Tighten

the knob bolts securely.

¡Provide adequate space behind and around

the unit to permit circulation of air and to

provide convenient access to the rear con-

nectors.

Connections

1. Connect the power cable to the power cable

connector on the rear of the display unit.

¡Even though the picture is quite legible

even in bright sunlight, keep the display

unit out of direct sunlight or at least shaded

because of heat that can build up inside the

cabinet.

2. Connect the signal cable to connector DJ-

1 on the rear of the display unit.

3. Run a ground wire (local supply) between

the ground terminal on the rear of the dis-

play unit and the ship’s superstructure.

¡Locate the display unit in a position where

you can view and operate it conveniently

but where there is no danger of salt or fresh

water spray or immersion.

Navigation aid, video sounder con-

nection

¡The orientation of the display unit should

be so the radar screen is viewed while the

operator is facing in the direction of the

bow. This makes determination of your

position much easier.

If your navigation aid can output data in

IEC1162(NMEA 0183) data format, your

vessel's position in latitude and longitude, the

range and bearing to waypoint, speed and

course may be input to this radar, and be seen

on the screen.

¡Make sure you allow enough clearance

both to get to the connectors behind the unit

and to allow you to get your hands in on

both sides to loosen or tighten the mount-

ing knobs. Make sure you leave at least a

foot or so of “service loop” of cables be-

hind the unit so it can be pulled forward

for servicing or easy removal of the con-

nectors.

Further if your video sounder can output depth

in IEC1162 (NMEA 0183) data format, depth

can be displayed on the radar screen.

You will need an NMEA cable:

Type

Code no.

Remarks

MJ-A6SPF0012-050 000-134-424 6P-6P (5m)

MJ-A6SPF0012-100 000-133-817 6P-6P (10m)

MJ-A6SPF0003-050 000-117-603 w/connector

MJ-A6SPF0009-100 000-125-236 w/connector

¡The compass safe distance of 0.8 meters

(standard compass) and 0.6 meters (steer-

ing compass) should be observed to pre-

vent deviation of the magnetic compass.

This radar can output NAVdata received from

a navaid to an echosounder.

¡ Even though the display unit meets water-

proof standard IPX-5, the connection of ex-

ternal buzzer, radar plotter and/or remote

display can affect waterproofness. Water-

tight integrity cannot be guaranteed. When

these modification has been done, the dis-

play unit should not be mounted where ex-

posed.

J1352 (NMEA)

SPU9211

INT9213

Navaid

(TLL)

Echo-

sounder

J1354

1832/1932/1942

Download from Www.Somanuals.com. All Manuals Search And Download.

Heading Sensor Connection

Heading signal can be connected to the

“HDG” connector.

Type

Code no.

Remarks

MJ-A6SPF0007-100 000-125-237 6P-6P 10m

MJ-A6SPF0009-100 000-125-236 w/connector(10m)

MJ-A6SPF0003-050 000-117-603 w/connector(5m)

Input/Output Data List

Connector

Name

Model

Data

Pin In/Out

FCV561M2 J1

183 (1.5)

In/Out

FCV581

FCV582

FCV291

FCV292

FCV668

GP1810

NMEA

183 (1.5)

NMEA

IN/OUT

183 (1.5/2.0)

183 (1.5)

183 (1.5/2.0)

183 (1.5)

GP3100M2 IN/OUT

GP8000M2 NMEA

PS8000M2 NMEA

183 (1.5/2.0)

GP80

DATA1

DATA2

GP1800M2 IN/OUT

Note: All plotter in the table except the GP-

1800M2 can receive TLL data.

Download from Www.Somanuals.com. All Manuals Search And Download.

CAUTION

Replace the fuses to

5 A for 24/32 VDC set.

Power cable connector

External equipment

connector

(To be used for Remote

Display, External Alarm

Buzzer, OP03-21 and

Radar Plotter, RP-110)

Signal cable connector

(DJ-1, waterproof)

Ground terminal

Left: HDG connector

Mid: NMEA connector (for NAV)

Right:NMEA connector (for E/S)

CAUTION

Ground the equipment. Ungrounded

equipment can give off or receive

electro-magnetic interference or give

electrical shock.

Figure 6-20 Connections on the display unit

6.5 Adjustments

6.3 Exchange of Fuse for

24/32V Power Supply

This section covers adjustment of the radar

after installation. You will need to

The power cable comes with a 10A fuse in

the fuse holder. This fuse is for use with a

12V DC power supply. For 24V/32V DC

power supply, replace the fuse with the 5A

fuse (supplied) and attach 5A label (supplied)

to fuse holder.

¡ adjust tune/video amplifier level input

¡ enter antenna height

¡ align heading

¡ adjust sweep timing

6.4 Checking the Installation

¡ adjust main bang suppression

¡ setting a blanking area, and

¡ confirm magnetron heater voltage.

After completing the installation, it is a good

idea to recheck it to be sure all steps were

correctly done. Use the table 6-1 to check the

installation.

These adjustments are done through the radar

install menus.

Tick box

Preparation

The signal cable is securely retained

against the mast or mounting platform and

is free of interference from running rigging.

1. Turn off the radar. While pressing and hold-

ing down the [GAIN] control (at least three

seconds), press the [POWER] key.

The cable gland or entry on the deck, if

provided, is waterproofed.

2. Press the [MENU] key, and select “OTH-

ERS” by using the omnipad, and pressing

[ACQ/ENTER] key.

The power connections to the battery are

of correct polarity.

3. Select “24. Installation setup”.

The plugs at the rear of the display unit

are tightly fastened.

4. Press the [ACQ/ENTER] key to open the

installation setup menu.

The fuse in the power cable is 10A (12V)

or 5A (24V/32V DC).

Download from Www.Somanuals.com. All Manuals Search And Download.

Entering antenna height

[ Installation Setup ]

Select item by omnipad

and ress ENTER key.

The STC curve changes with respect to an-

tenna height above the waterline. Enter an-

tenna height above the waterline to optimize

the STC curve.

All

GPS

¡. Nav Talker

2 . Depth Unit

3 . Temp Unit

4 . Hdg Sensor

5 . Key Beep

˚C

˚F

Magnet

Off

Gyro

Stop

1. Select “12. Antenna Height” on the instal-

lation setup menu and press the [ACQ/EN-

TER] key.

Rotate

180˚~180˚

Auto Adjustment

6 . Ant on Tx

7 . Dead Sector

8 . Tuned/Video

9 . Heading Alignment

10. Sweep Timing

2. Operate the omnipad to select antenna

height above the waterline; Low (~3 m),

Mid (3~6 m) or High (6~10 m).

Adjustment

11. MBS Adjustment

12. Ant Height

13. STC Curve

14. Ope Mode

15. Hours in Use

16. Tx Hours

Low

Mid

Hig

Sharp

Master

Gntl

Std

3. Press the [ACQ/ENTER] key.

Slave

000001.5H

000000.0H

Aligning heading

(Adjustment sector:0~359.90)

Figure 6-21 Installation setup menu

You have mounted the antenna unit facing

straight ahead in the direction of the bow.

Therefore, a small but conspicuous target dead

ahead visually should appear on the heading

line (zero degrees).

Adjusting tune/video

Do the following to adjust tune and video am-

plifier level input.

In practice, you will probably observe some

small error on the display because of the dif-

ficulty in achieving accurate initial position-

ing of the antenna unit. The following

adjustment will compensate for this error.

1. Press the [ST BY/TX] key to transmit.

WARNING

1. Identify a suitable target (for example, ship

or buoy) at a range between 0.125 to 0.25

nautical miles, preferably near the head-

ing mark. To lessen error, keep echoes in

the outer half of the picture by changing

the range. Also, be sure the zoom and off

center functions are off.

Before transmitting the radar make sure

no one is near the antenna unit, to pre-

vent the potential risk of being struck

by the rotating antenna and exposure

to RF radiation hazard.

2. On the Installation setup menu, select “8.

Tune/Video Adjustment” and press the

[ACQ/ENTER] key.

2. Select “9. Heading Alignment” on the in-

stallation setup menu and press the [ACQ/

ENTER] key. The following message ap-

pears on the display.

3. The unit automatically adjusts, displaying

the following message.

[ Heading alignment ]

Set EBL1 to center of target

dead ahead and press ENTER.

[ Tune/Video Auto Adjustment ]

Now under correction.

Correction 0.0°

Return to illustration setup.

menu after the correction.

Figure 6-22 Tune/Video Auto

Adjustment messages

Figure 6-23 Heading alignment message

3. Operate the omnipad to bisect target se-

lected at step 1 with the heading line.

4. When adjustment is completed, the mes-

sages disappears.

4. Press the [ACQ/ENTER] key.

Download from Www.Somanuals.com. All Manuals Search And Download.

5. As a final test, move the boat towards a

small buoy and confirm that the buoy

shows up dead ahead on the radar when it

is visually dead ahead.

[ Sweep Timing Adjustment ]

Use omnipad to straighten

target and press ENTER key.

Correction 0.000 nm

Adjusting sweep timing

(Adjustment range:0.000~4.266nm)

Figure 6-25 Sweep timing adjustment

message

This adjustment ensures proper radar perfor-

mance, especially on short ranges. The radar

measures the time required for a transmitted

echo to travel to the target and return to the

source. The received echo appears on the dis-

play based on this time. Thus, at the instant

the transmitter is fired, the sweep should start

from the center of the display (sometimes

called sweep origin.)

4. Operate the omnipad to straighten the tar-

get selected at step 2, and then press the

[ACQ/ENTER] key.

Adjusting MBS

(Adjustment: 0.00~0.25)

Main bang (black hole), which appears at the

display center on short ranges, can be sup-

pressed as follows.

A trigger pulse generated in the display unit

goes to the antenna unit through the signal

cable to trigger the transmitter (magnetron).

The time taken by the signal to travel up to

the antenna unit varies, depending largely on

the length of signal cable. During this period

the display unit should wait before starting

the sweep. When the display unit is not ad-

justed correctly, the echoes from a straight

local object (for example, a harbor wall or

straight pier) will not appear with straight

edges - namely, they will be seen as “pushed

out” or “pulled in” near the picture center. The

range of objects will also be incorrectly

shown.

1. Transmit on long range about 10 minutes.

2. Adjust the gain to show a small amount of

noise on the display.

3. Change to the 0.125 nautical mile range

and adjust the [A/C SEA] control.

4. Select “11. MBS adjustment” on the instal-

lation setup menu.

5. Press the [ACQ/ENTER] key. The follow-

ing message appears.

[ MBS Adjustment ]

Set value by omnipad

and press ENTER key.

Correction 000

(1) Correct

(2) Target pushed

inward

(3) Target pushed

outward

Figure 6-26 MBS Adjustment message

6. Operate the omnipad to suppress main

bang. (left: low, right: high, between 0 and

25)

Figure 6-24 Examples of improper and

correct sweep timing

1. Transmit on the shortest range and confirm

that the [GAIN] and [A/C SEA] controls

are properly adjusted.

7. Press the [ACQ/ENTER] key.

2. Visually select a target which forms straight

line (harbor wall, straight pier).

3. Select “10. Sweep Timing Adjustment” on

the installation setup menu and press the

[ACQ/ENTER] key. The message appears.

Download from Www.Somanuals.com. All Manuals Search And Download.

Setting a blanking area

Magnetron heater voltage

When the antenna is installed at a close dis-

tance in front of the wheelhouse, the radar

should be set not to transmit within that area.

No echoes appear in the blanking areas.

Magnetron heater voltage is formed at the MD

Board of the antenna unit and preadjusted at

the factory for use with any length of signal

cable. Therefore no adjustment is required.

However, verify heater voltage by following

the procedure below.

1. Select "7. Dead Sector".

2. Press the [ENTER] key.

1. Turn on the radar (if it is not already on)

and set it in stand-by.

3. Operate the omnipad to enter starting point

of area (in figures).

2. Open the antenna housing (radome) cover.

Connect a multitester, set to 10 VDC range.

4. Press the [ENTER] key.

5. Operate the omnipad to enter ending point

of area (in figures).

Model

M1832

M1932

Check Point

Rating

Adjustment

point

6. Press the [ENTER] key.

TP802 #4, #6 on

PTU Board

7.4~7.6V

R106

TP803 #4, #6 on

MD Board

VR801

M1942

TP803 #4, #6 on

MD Board

7.5~7.7V

VR801

3. Close the antenna housing cover and tighten

the fixing bolts.

Area of no

transmission

Figure 6-27 Blank areas where

transmission is suspended

This area can be turned on/off on the OTHER

MENU. For detail, see the description on page

18.

Note: This setting should be done after other

adjustments are finished.

Download from Www.Somanuals.com. All Manuals Search And Download.

MENU TREE

MENU KEY

RINGS (Off, 1, 2, 3, max)

EBL OFFSET (Off, On)

SHIFT (Off, On)

ZOOM (Off, On)

MODE (HU, CU, NU, TM)

DISP DATA

ECHO TRAIL (Off, On)

ECHO STRTCH (Off, ES1, ES2)

ARP-10 MENU

1. Display

2. All Cancel

3. Vector ref

4. Vector Length

5. History

6. CPA SET

7. TCPA SET

8. AUTO ACQ

OTHER MENU

Panel Dimmer (1, 2, 3, 4)

Mark Brill (1, 2, 3, 4)

HD Mark (1, 2, 3, 4)

Characters (1, 2, 3, 4)

Trail Tone (Single, Multi)

Int Reject (Off, 1, 2, 3)

Pulselength (Short, Long)

Noise Reject (Off, On)

Trail Time

(15S, 30S, 1M, 3M, 6M, 15M, 30M, Cont)

Tone (Auto, Manu)

Disp Data (Off, Nav, ARP, All)

WPT Mark (Off, On)

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

21.

22.

EBL Ref (Rel, True)

VRM Unit (nm, km, sm)

Watchman (Off, 5M, 10M, 20M)

STBY DISP (Norm, Econo, Nav)

Guard Mode (In, Out)

Own Position (L/L, TD)

Cursor Posi (B/R, L/L)

Alm Sense LV (Low, Mid, High)

Dead Sector (Off, On)

Range

36) :1832

36, 48) :1932

36, 48, 64) :1942

(1/8, 1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24,

Self Test

23.

24.

Installation Setup

1.Nav Talker (All, GPS, LC)

2.Depth Unit (m, fa, ft)

3.Temp Unit (°C, °F)

4.Hdg Sensor (Magnet, Gyro)

5.Key Beep (Off, On)

6.Scan Stop (Rotate, Stop)

7.Dead Sector

8.Tune/Video Adjustment

9.Heading Alignment

10.Sweep Timing Adjustment

11.MBS Adjustment

12.Ant Height (Low, Mid, high)

13.STC Curve (Sharp, Std, Gntl)

14.Ope Mode (Master, Slave)

15.Hours in Use

16.TX Hours

AP-1

Download from Www.Somanuals.com. All Manuals Search And Download.

ARP-10 (OPTION)

NOTICE

WARNING

Hazardous voltage can

shock, burn, or cause death.

The installation must be done by a

FURUNO representative or suitably

qualified radar technician.

Only qualified personnel should

work in the unit.

Authorities require this.

This auto plotter is not designed to

replace the human eye nor make

decisions for the navigator. It is

intended for use as an aid to navigation.

Always maintain a watch while

underway. Data obtained from this auto

plotter should always be double checked

against other sources to verify the

reliability of the data.

Keep magnets and magnetic fields

away from the equipment.

Magnetic fields will distort the picture and

can cause equipment malfunction. Be sure

the unit is well away from equipment

which gives off magnetic fields

(speaker, power transformer, etc.).

The following items affect calculation

accuracy.

This auto plotter automatically tracks a

acquired radar target and calculates its

course and speed, indicating it by a vector.

Since the data generated by this unit are

based on what radar targets are selected,

the radar must always be optimally tuned

for use with it to ensure that required

targets will not be lost or unwanted targets

such as sea returns and noise will not be

acquired and tracked.

• echo intensity

• radar transmission pulsewidth

• radar bearing error

• gyrocompass error

• own vessel or other vessel course

change

Data for CPA, TCPA, etc. are

approximations only. Always use data

obtained prudently.

A target echo does not always mean a

landmass, reef, ships or other surface

objects but can imply returns from sea

surface or precipitation. As the level of

these returns varies with environment, the

operator is required to properly adjust the

STC (ant-clutter sea), FTC (anti-clutter rain)

and GAIN controls to ensure that target

echoes within the affected area are not

eliminated from the radar screen. The

optimum settings of these controls may

slightly differ between the normal radar

operation and plotting, and it is