JRC JMA-5104, JMA-5106, JMA-5110 Instruction Manual

JMA-5104/5106/5110

MARINE RADAR

EQUIPMENT

INSTRUCTION

MANUAL

──ABOUT YOUR SAFETY──

Cautions for high voltage

High voltages from hundreds volts to tens of thousands volts are to be applied to the

electronic equipment such radio and radar devices. You do not face any danger during

normal operation, but sufficient cares are required for maintenance, inspection and

adjustment of their internal components. (Authorized maintenance personnel alone are

permitted to implement maintenance, check-ups or adjustment of internal components.)

High voltages of tens of thousands volts are so dangerous as to bring an instantaneous

death from electric shock, but even voltages of hundreds volts may sometimes lead to a

death from electric shock. To prevent such an accident, make it a rule to turn off the

power button, discharge capacitors with a wire surely earthed on an end and make sure

that internal parts are no longer charged before you touch any parts inside these devices.

At the time, wearing dry cotton gloves ensures you further to prevent such danger. It is

also a necessary caution to put one of your hands in the pocket and not to use your both

hands at the same time.

It is also important to select a stable foothold always to prevent additional injuries once

you were shocked by electricity. If you were injured from electric shock, disinfect the

burn sufficiently and get it taken care of promptly.

What to do in case of electric shock

When finding a victim of electric shock, turn off the power source and earth the circuit

immediately. If it is impossible to turn off the circuit, move the victim away promptly

using insulators such as dry wood plate and cloth without touching the victim directly.

In case of electric shock, breathing may stop suddenly if current flows to the respiration

center in the brain. If the shock is not so strong, artificial respiration may recover

breathing. When shocked by electricity, the victim will come to look very bad with weak

pulse or without beating, resulting in unconsciousness and rigidity.

FIRST AID TREATMENTS

☆☆☆☆

First-aid treatments

As far as the victim of electric shock is not in dangerous condition, do not move him and practice

artificial respiration on him immediately. Once started, it should be continued rhythmically.

（1） Do not touch the victim confusedly as a result of the accident, but the rescuer may also get

an electric shock.

（2） Turn off the power source calmly and certainly and move the victim away quietly from the

electric line.

（3） Call a physician or ambulance immediately or ask someone to call a doctor.

（4） Lay the victim on his back and loosen his necktie, clothes, belt, etc.

（5） a. Examine the victim's pulse.

b. Examine his heartbeat bringing your ear close to his heart.

c. Examine his breathing bringing the back of your hand or your face close to his face.

d. Check the size of the pupils of his eyes.

（6） Open the victim's mouth and take out artificial teeth, cigarette or chewing gum if any.

Keep his mouth open, stretch his tongue and insert a towel or the like in his mouth to

prevent the tongue from suffocating. (If it is hard to open his mouth due to set teeth, open it

with a screwdriver and insert a towel in this mouth.)

（7） Then, wipe his mouth so that foaming mucus does not accumulate inside.

☆☆☆☆

When pulse is beating but breathing has stopped

(1) Tilt the victim's head back as far as this face looks back. (A pillow may be inserted under his

neck.)

(2) Push his jaw upward to open his throat wide (to spread his airway).

(3) Pinch the victim's nostrils and take a deep breath, block his mouth completely with yours

and blow into his mouth strongly. Take a deep breath again and blow into his mouth.

Continue this 10 to 15 times a minute (blocking his nostrils).

(4) Carefully watch that he has recovered his natural breathing and stop practicing artificial

respiration.

(5) If it is difficult to open the victim's mouth, insert a rubber or vinyl tube into one of his

nostrils and blow into it blocking the other nostril and his mouth completely.

(6) When the victim recovers consciousness, he may try to stand up suddenly, but let him lie

calmly and serve him with a cup of hot coffee or tea to keep him warm and quiet. (Never give

him alcoholic drinks.)

Method of mouth-to-mouth respiration by raising head

Fig.1 Mouth-to-mouth respiration

③

②

①

(1) Raise the victim's head. Support his

forehead with one of your hand and his
neck with the other hand. → ①
When you tilt his head backward, the
victim, in most cases, opens his mouth to
the air. This makes mouth-to-mouth
respiration easy.

(2) Cover his mouth as widely as possible

with yours and press your cheek against
his nose → ② , or, pinch his nostrils

with your fingers to prevent air from
leaking. → ③

(3) Blow into his lungs.

Continue blowing into his mouth until his
breast swells. Blow into his mouth as

quickly as possible for the first 10 times.

☆☆☆☆

When both pulse and breathing have stopped

When no pulse has come not to be felt, his pupils are open and no heartbeat is heard, cardiac

arrest is supposed to have occurred and artificial respiration must be performed.

(1) Place your both hands, one hand on the other, on the lower one third area of his breastbone

and compress his breast with your elbows applying your weight on his breast so that it is

dented about 2cm (repeat compressing his breast 50 times or so a minute).

(Cardiac massage)

(2) In case of one rescuer,

Repeat cardiac massages about 15 times and blow into his mouth 2 times quickly, and repeat

this combination.

In case of two rescuers,

One person repeats cardiac massages 15 times while the other person blows into his mouth 2

times, and they shall repeat this combination.

(Cardiac massage and mouth-to-mouth respiration)

(3) Examine his pupils and his pulse sometimes. When the both have returned to normal, stop

the artificial respiration, serve him with a cup of coffee or tea and keep him warm and calm

while watching him carefully. Commit the victim to a medial specialist depending on his

condition. To let him recover from the mental shock, it is necessary for persons concerned to

understand his situations and the necessary treatments.

①②

③④

Fig.2 Cardiac massage

I

PREFACE

Thank you very much for purchasing the JRC marine radar equipment,
JMA-5104, JMA-5106 and JMA-5110.
This equipment is a marine radar equipment designed to obtain safe
operation of marine ships. The equipment consists of a radar signal
transceiver unit, a LCD display unit and a scanner unit as its main units.

● Before operating the equipment, be sure to read this instruction manual
carefully for correct operation.

● Maintain this instruction manual so that operators can refer to it at
anytime.

Refer to this manual when any inconvenience or defect occur.

II

●

●●

●Before Operation●

●●

●

Various pictorial indications are included in this manual and are shown
on these equipment so that you can operate them safely and correctly
and prevent any danger to you and / or to other persons and any damage
to your property during operation. Such indications and their meanings
are as follows.
Please understand them before you read this manual:

This indication is shown where any person is possibility to be in danger

of being killed or seriously injured, if this indication is neglected and

these equipment are not operated correctly.

This indication is shown where any person is supposed to be in danger of

being killed or seriously injured if this indication is neglected and these

equipment are not operated correctly.

This indication is shown where any person is supposed to be injured or any

property damage is supposed to occur if this indication is neglected and these

equipment are not operated correctly.

The△mark represents CAUTION (including DANGER and WARNING).

Detailed contents of CAUTION ("Electric Shock" in the example on the

left.) is shown in the mark.

The mark represents prohibition.

Detailed contents of the prohibited action ("Disassembling Prohibited" in

the example on the left) is shown in the mark.

The ● mark represents instruction.

Detailed contents of the instruction ("Disconnect the power plug" in the

example on the left) is shown in the mark.

Pictorial Indication

WARNING

CAUTION

Examples of pictorial indication

Warning label

There is a warning label on the top cover of the equipment.
Do not try to remove, break or modify the label.

Electric

Shock

Disassembling

Prohibited

Prohibition

Disconnect the

power plug

instruction

DANGER

III

●

●●

●

Cautions to be used during operation

●

●●

●

The customer should refrain from inspecting or repairing the internal parts of
this equipment.
Inspection or repair other than by specialized service personnel may cause
death or a serious injury of any person.
Please contact the sales department of Japan Radio Co., Ltd. or your local
branch, outlet or sales office with respect to maintenance and repair.

When performing maintenance in increment weather, please be sure to shut
the main power off.
If maintenance work is performed without shutting the main power off, there
is a risk of dying or getting a serious injury of any person by electric shock.

When performing maintenance or inspection of the scanner unit, be sure to
shut off the main power source.
If the scanner suddenly rotates and it hits the human body violently, there is a
risk of dying or getting a serious injury of any person.

Be sure to shut off the main power source when approaching the scanner unit
for the purposes of maintenance or inspection.
If exposured to electric waves at proximate distances, there is a risk of dying or
getting a serious injury of any person.

High Voltage
Since some sections of the modulator (CME-322 or QME-323) generate a high
voltage of about 4000V, no one except service engineers are allowed to touch
inside of the modulator.
There is a risk of dying or getting a serious injury of any person by electric
shock.

When the above setting is set to OFF, microwaves are radiated even if the
scanner unit is not rotating, it may cause death or a serious injury of any
person. Therefore, utmost care is necessary.
Make the setting is set ON after the required operation is completed.

IV

Make sure that the main power is turned off before maintaining the
equipment.
In particular, when a rectifier is used, a voltage is output from the rectifier
even if the power of the display is turned off and the radar is stopped.
If maintenance work is performed without turning off the main power, there is
a risk of equipments breaking down, and dying or getting a serious injury of
any person by electric shock.

When checking a scanner unit for maintenance, make sure that the main
power is turned off and the safety switch attached to the scanner unit is se to
OFF.
If the power is not turned off, there is a risk of equipments breaking down, and
dying or getting a serious injury of any person may occur by electric shock.
And if the rotating scanner unit is touched, there is a risk of equipments
breaking down, and dying or getting a serious injury of any person by electric
shock.

V

Do not touch the insides of the scanner unit, transceiver and display unit.
Touching any high voltage area, you will get an electric shock. For
maintenance, inspection and adjustment of internal parts of these equipment,
consult with our sales office or distributor in your district.

Since the scanner unit radiator rotates, do not approach it.
The scanner unit may start rotating suddenly, and consequently any person
may be struck and be injured. We recommend you to install the scanner unit
radiator on the roof of the wheel house, flying bridge, trestle, radar mast or
any other high position so that no person can approach it. When servicing the
scanner unit, set the scanner unit safety button to the OFF position.

Install the scanner unit at any place higher than any person.
If being exposed directly to electric wave at close range, you may suffer
adverse influence.

When approaching the antenna for maintenance or inspection, set the power
button of the display unit to the ST-BY position.
If being exposed directly to electric wave at close range, you may suffer
adverse influence.

Before starting maintenance work or the like, stop power supply by turning off
the power and disconnecting the power connector from the rectifier and the
display.
Even if the power switch is turned off, there are live components in each unit.
In this status, maintenance or inspection work causes an electric shock,
system failure, or accident.

Immediately after switching the keyboards, the modes of the [GAIN/PL],
[AUTO-TUNE], [AUTO-SEA] and [AUTO-RAIN] knobs may be different from
what they were before switching. Sensitivity might also be lowered, and this
could cause a collision.
Each time the active keyboard is switched, be sure to readjust the four knobs
above so that they are at their optimum settings.

Before disposing of used lithium batteries, insulate by affixing tape to the
positive and negative terminals or by other means.
Otherwise, short-circuiting may occur, resulting in heat generation, bursting
or ignition.

VI

Only specialized personnel shall perform installation work.

Installation work performed by personnel other than specialized personnel

may cause breakdown of the equipment, poor performance, fire, severe elec-tric

shock and other property and human damages.

When you directly connect with the ship's power supply without using the

optional rectifier, measure the voltage between the hull's earth and the

positive side of ship's power spply, and the hull's earth and the negative side of

this. And check voltage of 50 volts or more is not required.

If voltage of 50 volts or more is required, take the measures which do not

require 50 volts or more between the above mentioned terminals.

Connection without taking the measures causes system failure or accident.

This adjustment is a function of adjusting tune indication and peak of echo, it

is already made at the factory.

The default value is 64.

The settings must not be changed on the spot.

When the tune indication and peak of echo shift, if the settings are carefully

adjusted, you can not get the tuning.

The gain falles, a collision etc. may occur.

Do not change this adjustment unnecessarily.

An incorrect adjustment may erase the closest target and a collision may

occur.

VII

Use these radar only as assisting devices for navigation.
Also, the officer should make the final decision for maneuvering by himself.
If you make the final decision of maneuvering only on the information which a
radar display, it may become the cause of accidents, such as collision and
stranding.

Do not set the rain/snow clutter function to too high a suppression level.
Otherwise, not only echoes from rain/snow but also the targets of ships or
dangerous objects are suppressed, which may disturb the detection.
Set the best suppression level whenever you use the ran/snow clutter
suppression function.

Do not set the sea clutter suppression function to a level at which it clears all
sea clutters in short range.
Otherwise, not only echoes from waves but also the targets of ships or
dangerous objects are suppressed, which may disturb the detection.
Set the best suppression level whenever you use the sea clutter suppression
function.

The scanner unit shall be installed where there are not large obstacles in the
direction of the ship's heading line in the same plane.
If there is a large impediment in the same plane as the scanner unit, this may
cause the generation of folse echoes. In particular, if such folse echoes appear
at the ship's heading line, monitoring will be difficult and this may cause
inadequate forecasting of danger.

Do not install the scanner unit near chimney's or the exhaust of chimneys.
Soot will cause the performance of the radar to decrease and heat may cause
breakdown.

Do not install direction antenna or VHF antenna in the vicinity of the scanner
unit. Doing so may cause noise in the antenna reception.

Consideration should be given to separating the radar cable from the cables for
the direction antenna and VHF antenna.
These cables should never be bundled into one. Doing so may cause noise in
the antenna reception.

VIII

If felt is not provided where the rope contacts the scanner, or if the scanner is
supported near the both ends of the radiator, you may damage the unit.
Be sure to apply the rope to the antenna support.

When mounting the scanner unit, please check the maximum length of the
holding bolts.
If the bolts are too long, it gives severe damage to inside of the scanner.
When mounting the scanner unit, please use the attached bolts.
The mounting base thickness must not exceed 15mm (0.6inch).

Provide a distance of 1m or more between a processing unit and a magnetic
compass.
If a processing unit is installed in a position too close to a magnetic compass, it
may affect the magnetic compass.

Install a processing unit in the location that is not affected by seawater.
The processing unit is not waterproof.

Use correct fuse ratings.
The use of incorrect ratings may cause an equipment failure.

The GPS compass JLR-10 of JRC always can output absolute azimuth without
gyro setting.
Therefore, do not set a gyro value when connecting JLR-10.

Since the modulation section contains a magnetron with stored magnetism, do
not place a lock or a magnetic card close to the modulation section.
Otherwise, failures or data corruption may occur in such devices.

Do not use solvents such as thinner, gasoline, benzene, trichlene, and ketone.
These solvents cause discoloration or deterioration.

IX

EQUIPMENT APPEARANCE

Scanner Unit Type NKE-2042 (2 feet)

Scanner Unit Type NKE-2062 (4 feet)

X

Scanner Unit Type NKE-2102 (6 feet)

Processing Unit Type NDC-1260

XI

Display Unit Type NWZ-146 (Landscape) and Keyboard Unit NCE-7640

XII

Display Unit Type NWZ-146 (Portrait) and Keyboard Unit NCE-7640

XIII

Contents

PREFACE ······························································································································I

Before Operation···················································································································II

Cautions to be used during operation··················································································III

EQUIPMENT APPEARANCE ···························································································· IX

Chapter 1 Introduction··································································· 1

1.1 Functions ································································································································1

1.2 Features··································································································································1

1.3 Composition····························································································································2

1.4 Configuration ··························································································································4

1.5 General System Diagram·····································································································11

Chapter 2 Names and Functions in the Keyboard Unit and the Menu Structure ·· 14

2.1 Functions of the Keyboard ···································································································14

2.1.1 Outline of the keyboard functions ···········································································14

2.1.2 Configuration and functions of the keys on keyboard ············································16

2.1.3 Structure and the functions of knobs ······································································19

2.1.4 Structure and functions of the jog dial·····································································20

2.1.5 Structure and functions of the track ball ·································································20

2.2 Description of Screen Display······························································································21

2.3 Menu Functions····················································································································23

2.3.1 Menu structure ········································································································23

General menu [MENU] (1/1 page)··········································································24

Installation setting menu [MENU] (1/3 pages)························································25

Installation setting menu [MENU] (2/3 pages)························································26

Installation setting menu [MENU] (3/3 pages)························································27

Menu by a direct key [TRAILS] (1/1 page) ·····························································28

Menu by a direct key [DIMM] ··················································································29

Menu by a direct key [ALARM ACK] ······································································30

Menu by a direct key [ATA] (1/3 pages)··································································31

Menu by a direct key [ATA] (2/3 pages)··································································32

Menu by a direct key [ATA] (3/3 pages)··································································33

Menu initialization by pressing a key at Power ON················································34

Setting menu language by pressing a key at Power ON ·······································34

Chapter 3 Operation Procedures················································ 35

3.1 Operation Flow ·····················································································································35

3.2 Power-on Operation ·············································································································36

3.2.1 Power-on and start ··································································································36

XIV

1. Turning on the power [STBY] ············································································36

2. Transmitting [TX/PRF] ·······················································································36

3.2.2 Tuning [AUTO-TUNE] ·····························································································36

1. Switching the tuning mode·················································································36

2. Turning the tuning control [AUTO-TUNE]··························································36

3.2.3 Observation and image adjustment [+RANGE-] ····················································36

3.2.4 Data acquisition and measuring ·············································································36

3.2.5 Operation termination and stop [STBY], [TX/PRF]·················································37

1. Canceling transmission [STBY] ·········································································37

2. Turning off the power ·························································································37

3.3 Preparation for Observation·································································································38

3.3.1 Changing the brightness of the LCD ······································································38

3.3.2 Changing the brightness of the keyboard [DIMM]··················································38

3.3.3 Switching the display language [DIMM]··································································38

3.3.4 Setting the volume of the buzzer [ALARM ACK]····················································39

3.3.5 Switching the day/night mode [DIMM] ····································································40

1. Switching the day/night mode [DIMM]·······························································40

2. Switching the display color [DIMM]····································································40

3. Switching the brightness of the screen [DIMM]·················································41

3.4 Basic Operation····················································································································43

3.4.1 Transmitting [TX/PRF]·····························································································43

3.4.2 Halting transmission [STBY] ···················································································43

3.4.3 Changing the range [+RANGE-] ·············································································43

3.4.4 Erasing/displaying the fixed range marker [RR/HL] ···············································43

3.4.5 Erasing the ship's heading marker [RR/HL] ···························································43

3.4.6 Tuning······················································································································43

3.4.7 Adjusting sensitivity [GAIN/PL] ···············································································43

3.5 General Operation················································································································44

3.5.1 Eliminating radar interference [MENU] ···································································44

3.5.2 When it is raining or snowing [AUTO-RAIN]···························································45

3.5.3 When the sea is rough [AUTO-SEA] ······································································46

3.5.4 Using the trackball [TRACK BALL] ·········································································47

3.5.5 Using VRM [VRM1/VRM2], [JOG DIAL]·································································48

1. Selecting VRM#1/VRM#2 [VRM1/VRM2] ·························································48

2. Operating VRM#1/VRM#2 [VRM1/VRM2]························································48

3. Erasing VRM#1/VRM#2 [VRM1/VRM2]····························································48

4. Measuring the distance from own ship using VRM#1 [VRM1/VRM2]··············49

5. Measuring the distance from own ship using VRM#2 [VRM1/VRM2] ············49

6. Setting KM as range units··················································································50

3.5.6 Using EBL (electronic bearing cursor) [EBL1/EBL2], [TRACK BALL]···················51

1. Selecting EBL#1/EBL#2 [EBL1/EBL2] ······························································51

2. Operating EBL#1/EBL#2 [EBL1/EBL2]·····························································51

3. Erasing EBL#1/EBL#2 [EBL] ·············································································51

4. Measuring the bearing from own ship using EBL#1 [EBL1/EBL2]···················52

5. Measuring the bearing from own ship using EBL#2 [EBL1/EBL2]···················52

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6. Using EBL2 as a floating EBL ···········································································52

7. Setting EBL display ····························································································53

3.5.7 Changing the bearing presentation method of the PPI screen [AZI MODE]·········54

3.5.8 Changing the center of the PPI screen [OFFCENT] ··············································55

1. Setting a position to which the center is moved ················································55

2. Canceling the position as the new center··························································55

3. Continuously moving the center ········································································56

4. Canceling the position as the new center··························································56

3.5.9 Using the trail display function [TRAILS] ································································56

1. Setting the trail display function to ON/OFF [TRAILS]······································56

2. Setting a trail interval [TRAILS]··········································································57

3. Clearing stored trail data [TRAILS] ····································································57

4. Setting a trail reference level (trail threshold) [TRAILS] ····································57

5. Setting a trail storage suppression distance [TRAILS]······································58

6. Setting a range trail storage [TRAILS]·······························································58

3.5.10 Using the target expansion function [MENU] ·························································59

1. Setting the target expansion function ································································59

2. Canceling the target expansion function ···························································59

3.5.11 Changing the transmitter pulse length [GAIN/PL] ··················································59

Changing the pulse length ······················································································60

3.5.12 Using the zoom function [MENU] ···········································································60

1. Setting the zoom function ··················································································60

2. Canceling the zoom function ·············································································60

3.5.13 Highlighting a target by decreasing unnecessary noise (image processing) [MENU] ·······61

1. Setting image processing [MENU] ····································································61

2. Canceling image processing [MENU] ·······························································62

3. Setting an image processing range [MENU]·····················································62

3.5.14 Switching true/relative motion display [TM/RM] ·····················································63

1. Switching the motion mode ···············································································63

2. Resetting own ship's position in true motion display (TM) ································63

3.5.15 Suppressing the power consumption of the radar [MENU] ···································65

1. Using the intermittent transmitting function [MENU] ·········································65

2. Canceling the intermittent transmitting function [MENU] ··································65

3. Setting the period of the transmitting state (the number of antenna rotations) [MENU] ·······65

4. Setting the period of the standby state [MENU]················································66

3.5.16 Monitoring the heading of other ships (targets) [ALARM ACK] ·····························67

1. Using the radar alarm [ALARM ACK]································································67

2. Canceling the radar alarm function····································································67

3. Creating a radar guard zone [ALARM ACK] ·····················································67

4. Setting a radar guard zone [ALARM ACK]························································68

5. Setting a radar guard zone detection level [ALARM ACK] ·······························68

3.5.17 Resetting an alarm (stopping a warning) [ALARM ACK] ·······································69

3.5.18 Displaying parallel line cursors [MENU], [VRM], [EBL] ··········································69

3.5.19 Using the MOB function [MOB]···············································································70

1. Displaying the MOB mark ··················································································70

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2. Erasing the MOB mark ······················································································70

3.5.20 Using the WAYPOINT function [MENU]·································································71

1. Displaying WAYPOINT ······················································································71

2. Erasing WAYPOINT···························································································71

3.5.21 Own ship display function [MENU] ·········································································72

Switching own ship display ·····················································································72

3.5.22 Function to convert time difference display to latitude/longitude display [MENU] ······72

1. Setting the LORAN chain (base station number) ············································72

2. Setting time difference (TD1 or TD2)·································································73

3. Setting the correction value (of TD1 or TD2) ····················································73

3.5.23 Cursor/own-ship position output function [CSR POS]············································73

3.6 Use of Function Keys ···········································································································75

3.6.1 Overview··················································································································75

3.6.2 Operation procedures ·····························································································76

1. Calling a function································································································76

2. Changing the setting of a function key ······························································76

3. Changing a function key title··············································································76

4. Initializing the setting of a function key (Returning to the factory setting)·········77

Function key menu lists (display only)····································································78

3.7 Other Procedures Required·································································································79

3.7.1 Confirming software versions [MENU]····································································79

3.7.2 Confirming the operating status of connected units [MENU] ·································79

3.7.3 Displaying magnetron current [MENU] [+RANGE-] ···············································80

3.7.4 Confirming error logs [ALARM ACK] ······································································81

3.7.5 Clearing the error log [ALARM ACK] ······································································82

3.7.6 Operating the self-diagnostic function [MENU] ······················································82

3.7.7 Displaying the help menu························································································82

3.7.8 Replacing the battery (BT1) ····················································································83

3.7.9 Procedure if an incomprehensible symptom occurs during use of the radar ········84

3.8 Options ·································································································································85

3.8.1 Operating a second keyboard unit [GAIN/PL] [JOG DIAL] ····································85

Chapter 4 How to Interpret the PPI Screen ································ 87

4.1 Height of and the Distance to the Target ·············································································87

Distance and Target ································································································87

4.2 Returns from a Target···········································································································88

4.3 Propagation Path of Radio Waves·······················································································88

4.3.1 Sea returns ··············································································································89

4.3.2 False echoes ···········································································································89

4.4 Display of Radar Transponder·····························································································91

Chapter 5 Maintenance and Inspection······································ 92

5.1 General Maintenance···········································································································92

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5.2 Scanner Unit·························································································································93

5.3 Display Unit···························································································································93

5.4 Special Parts·························································································································94

5.5 Circuit Blocks for Repair·······································································································95

5.6 Actions to Deal with Abnormalities and Breakdown····························································96

Chapter 6 After-sales Service ····················································· 97

When asking for repair ····························································································97

Recommendation of maintenance inspection ························································97

RADAR FAILURE CHECKLIST ·············································································98

Chapter 7 Disposal······································································ 99

7.1 Equipment Disposal ·············································································································99

7.2 Disposal of Used Batteries···································································································99

7.3 Disposal of Used Magnetron································································································99

Chapter 8 Specifications ··························································· 100

8.1 General Specifications ·······································································································100

8.2 Scanner Unit Specification·································································································101

8.2.1 Scanner unit (NKE-2042 : Redome type)·····························································101

8.2.2 Scanner unit (NKE-2062 : 6kW rotation type) ······················································101

8.2.3 Scanner unit (NKE-2102 : 10kW rotation type) ····················································102

8.3 Processing Unit Specifications···························································································103

8.4 Keyboard Unit Specifications ·····························································································105

8.5 Display Unit Specifications·································································································106

8.6 Option ·································································································································107

8.6.1 Interunit cable ········································································································107

8.6.2 Rectifier unit···········································································································107

8.6.3 Flash mounting kit ·································································································107

8.6.4 MARPA ··················································································································107

8.6.5 NSK unit·················································································································107

8.6.6 Sub indicator unit signal out ··················································································108

8.6.7 Sub keyboard unit ·································································································108

8.7 Rectifier·······························································································································109

8.8 Cable Length between Equipment Units ···········································································109

Chapter 9 Installation··································································110

This chapter has been written for the service technicians to read in case of installation.

9.1 General ·······························································································································110

9.2 Installing the Scanner Unit ································································································· 111

9.2.1 Selecting the installation location ·········································································· 111

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9.2.2 Installation procedure···························································································· 113

1. Stand ················································································································113

2. Suspending the Scanner ················································································· 114

3. Paint ·················································································································114

4. Magnetism········································································································ 114

9.2.3 Connection of cables to be assembled································································· 115

1. Radome scanner unit (NKE-2042) ·································································· 115

2. Rotary scanner unit (NKE-2062/NKE-2102) ··················································· 117

9.3 Installing an Indicator Unit ·································································································· 119

9.3.1 Specifying the installation position ········································································119

9.3.2 Installation method ································································································119

9.3.3 Rear of the processing unit ···················································································120

9.3.4 Signals of option connectors ·················································································121

9.3.5 Installing and display unit ······················································································123

1. Setting vertically or horizontally ·······································································123

2. Connecting cables ···························································································123

9.3.6 Installing a keyboard unit·······················································································125

Connecting a cable ·······························································································125

9.3.7 Attaching a power cable (CFQ-6911-5)································································126

9.3.8 Attaching a cable between a processing unit and a scanner unit (CFQ-6912-20/30) ·····129

9.3.9 Connecting a GPS receiver and NMEA equipment ·············································131

1. Connecting GPS receiver of JRC····································································131

2. Connecting another manufacturer's GPS receiver or NMEA data output equipment ·······131

3. NMEA0183 standard input/output sentences ·················································133

9.3.10 Connecting a GPS compass (JLR-10) ·································································134

1. Using a dedicated cable ··················································································134

2. When not using a dedicated cable ··································································135

9.3.11 Connecting an electromagnetic compass ····························································136

9.3.12 Connecting gyro ····································································································137

1. Connections to an external buzzer ··································································139

2. Connections to a gyro and log ·········································································139

9.3.13 Connecting a PC plotter and NMEA equipment···················································146

1. Outputting NMEA0183 data to a PC plotter (RS232C output) ·······················146

2. Outputting NMEA0183 data to NMEA equipment (RS422 output) ················146

3. Switching RS232C/RS422 signal output·························································147

9.3.14 Connecting external buzzers ················································································148

9.4 Changing Ship's Power······································································································149

1. Display··············································································································149

2. Scanner unit ·····································································································149

9.5 Checking and Adjustment After Installation·······································································150

9.5.1 Checking after installation ·····················································································150

9.5.2 Checking operation ·······························································································150

9.5.3 Various adjustments······························································································150

9.5.4 Rectifier··················································································································151

9.6 Adjustment··························································································································152

XIX

9.6.1 General adjustment·······························································································152

9.6.2 Adjusting a scanner unit························································································152

1. Adjusting AVR output voltage of a modulator··················································152

2. Adjusting a tuning indication level of a receiver ··············································152

9.6.3 Adjusting an indicator unit ·····················································································153

Adjusting AVR output ····························································································153

9.7 Initialization ·························································································································154

9.7.1 Adjusting a receiver [+RANGE-] [TX/PRF] [AUTO-TUNE] [MENU] ····················155

1. Tuning preset ···································································································155

2. Center frequency adjustment ··········································································155

3. Tuning indicator level adjustment ····································································156

9.7.2 Noise level adjustment [MENU] ············································································157

9.7.3 Azimuth adjustment [TM/RM] [AZI MODE] [MENU] ············································157

9.7.4 0 mile adjustment [TM/RM] [AZI MODE] [MENU] ················································158

9.7.5 Setting a scanner unit height [MENU] ··································································158

9.7.6 Setting a gyro value [MENU] [AZI MODE]····························································159

9.8 Various Initial Settings ········································································································160

9.8.1 Sensitivity preset [AUTO-SEA] [AUTO-RAIN] [GAIN/PL] [MENU] ······················160

9.8.2 Sea clutter preset [+RANGE-] [AUTO-TUNE] [AUTO-SEA] [AUTO-RAIN] [GAIN/PL] [MENU] ·······160

9.8.3 Control of main bang [+RANGE-] [AUTO-TUNE] [AUTO-SEA] [AUTO-RAIN] [GAIN/PL] [MENU] ···161

9.8.4 Setting a close range dynamic range [MENU] ·····················································162

9.8.5 Setting a video gradation level [MENU] ································································163

9.8.6 Setting video noise suppression display [MENU]·················································163

9.8.7 Setting a small target detection mode [MENU] ····················································164

9.8.8 Setting a float mode [MENU] ················································································165

9.8.9 Setting an inference suppression function level [MENU] ·····································165

9.8.10 Setting a short distance dynamic range [MENU] ·················································166

9.8.11 Setting a value of the target expansion function [MENU] ····································166

9.8.12 Setting target expansion function control [MENU] ···············································167

9.8.13 Setting a sensitivity correction value [MENU]·······················································167

9.8.14 Setting transmission power control [MENU]·························································168

9.8.15 Setting a scanner unit rotation speed [MENU] ·····················································168

9.8.16 Setting information in a GPS receiver···································································169

1. Setting the position of your own ship [MENU]·················································169

2. Setting a height of own ship [MENU]·······························································169

3. Setting geodetic information [MENU] ······························································170

4. Setting a position fixing mode [MENU]····························································173

5. Setting a HDOP level [MENU] ·········································································173

6. Setting an averaging level [MENU] ·································································174

7. Setting a prohibited satellite number [MENU] ·················································174

8. GPS receiver master reset [MENU] ································································175

9. Sending updated set values [MENU] ······························································175

10. Setting UTC time [MENU]················································································176

11. Setting a UTC time difference [MENU]····························································176

12. Sending updated setting values [MENU] ························································176

XX

9.8.17 Setting information in a DGPS receiver································································178

1. Setting a DPGS mode [MENU] ·······································································178

2. Setting a frequency used by a beacon station [MENU] ··································178

3. Setting a baud rate for communication with a beacon station [MENU]··········178

4. Setting a DPGS mode [MENU] ·······································································179

5. Sending updated setting values [MENU] ························································179

9.8.18 Setting information in a WAAS receiver································································180

1. Setting a WAAS mode [MENU]·······································································180

2. Setting a position fixing satellite [MENU]·························································180

3. Setting information whether a prohibited satellite can be used [MENU] ········180

4. Setting a satellite number [MENU] ··································································181

5. Sending updated setting values [MENU] ························································181

9.8.19 Displaying GPS receiving status···········································································182

9.8.20 Initializing ATA [MENU] ·························································································182

9.8.21 Setting a course data input type [MENU] ·····························································183

9.8.22 Setting manual course data [MENU] ····································································184

9.8.23 Setting a speed data input type [MENU] ······························································184

9.8.24 Setting manual speed data [MENU] ·····································································185

9.8.25 Setting own ship's position input selection [MENU] ·············································185

9.8.26 Setting own ship's position input [MENU]·····························································186

9.8.27 Setting a compass input baud rate [MENU] ·························································186

9.8.28 Setting connection of the 2nd keyboard [MENU] ·················································187

9.8.29 Setting a NMEA data output frequency [MENU]··················································187

9.8.30 Setting selection of a magnetic azimuth sensor correction value [MENU]··········188

9.8.31 Setting manual data for a compass correction value [MENU] ·····························189

9.8.32 Setting a PC output baud rate [MENU]·································································189

9.8.33 Setting a keyboard port baud rate [MENU] ··························································189

9.8.34 Setting a display direction of the indicator [MENU] ··············································190

9.8.35 Setting a display timing of the indicator [MENU] ··················································190

9.8.36 Setting reading/writing setting values to non-initialization memory [MENU]········191

9.8.37 Initializing a menu storage area [MENU]······························································192

9.8.38 Displaying simulator images ·················································································192

9.8.39 Special mode·········································································································193

9.9 Resetting Adjustments to the Initial State··········································································194

9.10 Maintenance·······················································································································195

9.10.1 General maintenance····························································································195

1. Cleaning the equipment···················································································195

2. Checking the tightening of screws···································································195

3. Checking connections······················································································195

9.10.2 Scanner unit ··········································································································196

1. Radiation section······························································································196

2. Rotation driving section····················································································197

9.10.3 Display···················································································································198

Cleaning display ····································································································198

XXI

Attached Figures

[Fig. 101 INTERCONNECTION DIAGRAM OF JMA-5104]

[Fig. 102 INTERCONNECTION DIAGRAM OF JMA-5106]

[Fig. 103 INTERCONNECTION DIAGRAM OF JMA-5110]

[Fig. 104 PRIMARY POWER SYSTEM DIAGRAM OF JMA-5104]

[Fig. 105 PRIMARY POWER SYSTEM DIAGRAM OF JMA-5106]

[Fig. 106 PRIMARY POWER SYSTEM DIAGRAM OF JMA-5110]

[Fig. 107 INTERNAL CONNECTION OF SCANNER UNIT NKE-2042]

[Fig. 108 INTERNAL CONNECTION OF SCANNER UNIT NKE-2062]

[Fig. 109 INTERNAL CONNECTION OF SCANNER UNIT NKE-2102]

[Fig. 110 CIRCUIT DRAWING OF MODULATOR UNIT CME-322]

[Fig. 111 CIRCUIT DRAWING OF MODULATOR UNIT CME-323]

[Fig. 112 CIRCUIT DRAWING OF POWER SUPPLY UNIT CBD-1645 (1/2)]

[Fig. 113 CIRCUIT DRAWING OF POWER SUPPLY UNIT CBD-1645 (2/2)]

[Fig. 114 CIRCUIT DRAWING OF MODULATOR UNIT CPA-248]

[Fig. 115 INTERNAL CONNECTION OF DISPLAY UNIT NCD-4310]

[Fig. 116 CIRCUIT DRAWING OF POWER SUPPLY UNIT CBD-1638]

1

Chapter 1 Introduction

1.1 Functions

This device is a marine radar device that utilizes a scanner unit including transmitter and
receiver and 10.4 inch liquid crystal display unit and uses a compact raster scan method for
achieving a fully semiconductor adopted (except for special electron tubes) system.
This equipment comprises radar as defined in the Wireless Telegraphy Act.

1.2 Features

Enhanced fundamental performance of the radar

Through switching among 4 steps in terms of pulse width/cycle switching of frequency and
switching among 3 steps in receiver bandwidth, enhanced fundamental performance of the
radar has been achieved towards display of clearer and high quality images. Moreover,
through the incorporation of advanced digital signal processing, performance in target
de-tection during increment weather has been improved.

Confirmation of the ship's position and identifying the waypoint at a glance

Through connecting to external navigation equipment such as GPS, the location of the ship
(numerical values) or a mark on the waypoint may be displayed on the screen. This allows for
confirmation of the difference between the waypoint and the ship's heading at a glance.

High operability

A jog dial has been incorporated for simple operation of menu selections, EBL/VRM.
The track ball may also be used to capture the MARPA target in a simple manner.
A system for the direct display of menu items that are frequently used with dedicated keys has
been adopted.

2

1.3 Composition

Radar configuration and ship's power

Comprehensive

model name

Scanner unit

Processing

unit

Keyboard

unit

Display unit Ship's power supply

JMA-5104
JMA-5106
JMA-5110

NKE-2042
NKE-2062
NKE-2102

NDC-1260 NCE-7640 NWZ-146

DC (12V/24V/32V )
DC (12V/24V/32V)
DC (24V/32V)

When an optional rectifier unit is used: (AC100V/110V/115V/200V/220V/230V) 50/60Hz single
phase

Rectifier unit model name (optional) : NBA-797

Note

When AC power supply is used, an optional rectifier unit is necessary.

The English presentation of the nameplate of each unit is as follows.

SCANNER UNIT
PROCESSING UNIT
KEYBOARD UNIT
DISPLAY UNIT
RECTIFIER UNIT

Attachments

Item name Quantity JRC code Remarks

Instruction manual 1 7ZPRD0590 This manual (English)

Cable between a scanner
unit and a processing unit

1 CFQ6912-20

19-core composite cable
Standard length 20m

Power cable 1 CFQ-6911-5 5m

Spare parts

Spare parts are provided for each of the indicator unit and the scanner unit.
The following table lists spare parts for each unit.

Spare parts for the indicator unit (7ZRD0010) included in the same package as the processing unit

Item name Quantity JRC code Remarks

Fuse (M60NR-10A) 3 5ZFAD00018 (Processing unit F1 : 10A)

6-pin connector 1 5JCDX00014 For NMEA data communication

8-pin connector 1 5JCDX00015 For NMEA data communication

Note

Only a 10A fuse is available for processing unit F1 (fuse for the indicator unit power) regardless of the

input power voltage and transmission output.

3

NKE-2042 (spare parts for 4kw scanner unit) included in the same package as scanner unit 7ZXRD0012

Item name

(model name)

Quantity JRC code Remarks

Fuse (SM6.3) 4 5ZFAD00543

For modulator
(processing unit F2 : 6.3A)

12V
input

Not required −

For motor
(processing unit F3:)

Fuse (SM3.15) 4 5ZFAD00359

For modulator
(processing unit F2 : 3.15A)

24/32V
input

Not required −

For motor
(processing unit F3:)

Note

For the 4kw scanner unit, insertion of F3 in the processing unit (fuse for motor) is not required since the

power supply is shared between the modulator and the motor. Therefore, there are no spare parts.

NKE-2062 (spare parts for 6kw scanner unit) included in the same package as scanner unit 7ZXRD0013

Item name

(model name)

Quantity JRC code Remarks

Fuse (SM6.3) 4 5ZFAD00543

For modulator
(processing unit F2 : 6.3A)

12V
input

Fuse (SM5) 4 5ZFAD00393

For motor
(processing unit F3 : 5A)

Fuse (SM3.15) 4 5ZFAD00359

For modulator
(processing unit F2 : 3.15A)

24/32V
input

Fuse (SM5) 4 5ZFAD00393

For motor
(processing unit F3 : 5A)

Carbon brush
(54531-01)

2 BRXP05247

NKE-2102 (spare parts for 10kw scanner unit) included in the same package as scanner unit 7ZXRD0014

Item name

(model name)

Quantity JRC code Remarks

Fuse (SM5) 4 5ZFAD00393

For modulator
(processing unit F2 : 5A)

24/32V
input

Fuse (SM8) 4 5ZFAD00544

For motor
(processing unit F3 : 8A)

Carbon brush
(54583-01)

2 BRSW00101

4

1.4 Configuration

Fig. 1.1 OUTLINE DRAWING OF SCANNER UNIT NKE-2042

5

Fig. 1.2 OUTLINE DRAWING OF SCANNER UNIT NKE-2062

6

Fig. 1.3 OUTLINE DRAWING OF SCANNER UNIT NKE-2102

7

Fig. 1.4 OUTLINE DRAWING OF PROCESSING UNIT NDC-1260

8

Fig. 1.5 OUTLINE DRAWING OF KEYBOARD UNIT NCE-7640

9

Fig. 1.6 OUTLINE DRAWING OF DISPLAY UNIT NWZ-146 (LANDSCAPE)

10

Fig. 1.7 OUTLINE DRAWING OF DISPLAY UNIT NWZ-146 (PORTRAIT)

11

1.5 General System Diagram

Fig. 1.8 GENERAL SYSTEM DIAGRAM OF JMA-510

4

NOTES :
ELIMINATING THE INTERFERENCE ON FREQUENCIES USED FOR MARINE
COMMUNICATIONS AND NAVIGATION DUE TO OPERATION OF THE RADAR.
ALL CABLES OF THE RADAR ARE TO BE RUN AWAY FROM THE CABLES OF RADIO
EQUIPMENT.
(EX. RADIOTELEPHONE.COMMUNICAITONS RECEIVER AND DIRRECTION FINDER.ETC.)
ESPECIALLY INTER-WIRING CABLES BETWEEN SCANNER UNIT AND DISPLAY UNIT OF
THE RADAR

SHOULD NOT BE RUN PARALLEL WITH THE CABLES OF RADIO

EQUIPMENT.

Interunit cable (20m)
CFQ-6912-20

GPS Receiver or
NMEA signal input

GPS COMPASS(JLR-10)
or Magnetic compass

Rectifier
(Option)

NBA-797

AC100/110/115/
200/220/230V, single phase

Power cable (for 5m)
CFQ-6911-5
From DC10.8V to DC42V
(Cable length 20m)
From DC21.6V to DC42V
(Cable length 30m)

Scanner unit (NKE-2042)

Processing unit (NDC-1260)

NMEA signal out (for other equipment)
NMEA data: GLL, etc.

Cursor data: RSD
Own ship data: OSD

MARPA data out: TTM

Keyboard unit (NCE-7640)

Display unit (NWZ-146)

Indicator unit (NCD-4310)

VGA signal out

10.4 inches
color LCD

EXT.Buzz signal out

GYRO in
(SYNC/STEP)
LOG in
(SYNC/STEP)

NSK unit
(Option)
NCT-4106

Sub keyboard unit
(NCE-7640)

Slave Indicator signal out

5m

5m

Option

MARPA
Unit (Option)

NCA-868

PC
plotter

5m

Control unit (NCM-770)

H-7ZCNA0855

H-7ZCNA0855

H-7ZCRD0853

CFQ-6900(power cable)
CFQ-6901(signal cable)

Landscape or Portrait

27rpm
4kW
2ft

H-CFQ-6934

12

Fig. 1.9 GENERAL SYSTEM DIAGRAM OF JMA-5106

NOTES :
ELIMINATING THE INTERFERENCE ON FREQUENCIES USED FOR MARINE
COMMUNICATIONS AND NAVIGATION DUE TO OPERATION OF THE RADAR.

A

LL CABLES OF THE RADAR ARE TO BE RUN AWAY FROM THE CABLES OF RADIO
EQUIPMENT.
(EX. RADIOTELEPHONE.COMMUNICAITONS RECEIVER AND DIRRECTION FINDER.ETC.)
ESPECIALLY INTER-WIRING CABLES BETWEEN SCANNER UNIT AND DISPLAY UNIT OF
THE RADAR

SHOULD NOT BE RUN PARALLEL WITH THE CABLES OF RADIO

EQUIPMENT.

GPS Receiver or
NMEA signal input

GPS COMPASS(JLR-10)
or Magnetic compass

Rectifier
(Option)

NBA-797

AC100/110/115/
200/220/230V, single phase

Processing unit (NDC-1260)

NMEA signal out (for other equipment)
NMEA data: GLL, etc.

Cursor data: RSD
Own ship data: OSD

MARPA data out: TTM

27rpm
6kW
4ft/6ft

Scanner unit (NKE-2062)

Interunit cable (20m)
CFQ-6912-20

Keyboard unit (NCE-7640)

Display unit (NWZ-146)

Indicator unit (NCD-4310)

VGA signal out

10.4 inches
color LCD

EXT.Buzz signal out

GYRO in
(SYNC/STEP)
LOG in
(SYNC/STEP)

NSK unit
(Option)
NCT-4106

Sub keyboard unit
(NCE-7640)

Slave Indicator signal out

5m

5m

Option

MARPA
Unit (Option)

NCA-868

PC
plotter

5m

Control unit (NCM-770)

H-7ZCNA0855

H-7ZCNA0855

H-7ZCRD0853

CFQ-6900(power cable)
CFQ-6901(signal cable)

Landscape or Portrait

H-CFQ-6934

Power cable (for 5m)
CFQ-6911-5
From DC10.8V to DC42V
(Cable length 20m)
From DC21.6V to DC42V
(Cable length 30m)

13

Fig. 1.10 GENERAL SYSTEM DIAGRAM OF JMA-5110

NOTES :
ELIMINATING THE INTERFERENCE ON FREQUENCIES USED FOR MARINE
COMMUNICATIONS AND NAVIGATION DUE TO OPERATION OF THE RADAR.
ALL CABLES OF THE RADAR ARE TO BE RUN AWAY FROM THE CABLES OF RADIO
EQUIPMENT.
(EX. RADIOTELEPHONE.COMMUNICAITONS RECEIVER AND DIRRECTION FINDER.ETC.)
ESPECIALLY INTER-WIRING CABLES BETWEEN SCANNER UNIT AND DISPLAY UNIT OF
THE RADAR

SHOULD NOT BE RUN PARALLEL WITH THE CABLES OF RADIO

EQUIPMENT.

27rpm
10kW
6ft

GPS Receiver or
NMEA signal input

GPS COMPASS(JLR-10)
or Magnetic compass

Rectifier
(Option)

NBA-797

AC100/110/115/
200/220/230V, single phase

Scanner unit (NKE-2102)

Power cable (for 5m)
CFQ-6911-5
From DC21.6V to DC42V

Processing unit (NDC-1260)

NMEA signal out (for other equipment)
NMEA data: GLL, etc.

Cursor data: RSD
Own ship data: OSD

MARPA data out: TTM

Interunit cable (20m)
CFQ-6912-20

Keyboard unit (NCE-7640)

Display unit (NWZ-146)

Indicator unit (NCD-4310)

VGA signal out

10.4 inches
color LCD

EXT.Buzz signal out

GYRO in
(SYNC/STEP)
LOG in
(SYNC/STEP)

NSK unit
(Option)
NCT-4106

Sub keyboard unit
(NCE-7640)

Slave Indicator signal out

5m

5m

Option

MARPA
Unit (Option)

NCA-868

PC
plotter

5m

Control unit (NCM-770)

H-7ZCNA0855

H-7ZCNA0855

H-7ZCRD0853

CFQ-6900(power cable)
CFQ-6901(signal cable)

Landscape or Portrait

H-CFQ-6934

14

Chapter 2

Names and Functions in the Keyboard

Unit and the Menu Structure

2.1 Functions of the Keyboard

The normal operations of this radar equipment can be performed using the switches, volume knob,
jog dial, and track ball on the keyboard unit.
The operations are simple, however it is important to understand that the function of each
operation unit is to obtain the required information on the LCD screen of the display unit.

2.1.1 Outline of the keyboard functions

The keyboard unit consists of the following four main components.
[Key], [Knob], [Jog dial], and [Track ball]
Each of these components is described below.

The correspondence between the operation method and the function is described below.

The notation enclosed by brackets [ ] indicates a key, a knob, a jog dial, or a track ball on the
keyboard.

Example of a key : [CLEAR]
Example of a knob : [AUTO-SEA]
Jog dial : [JOG DIAL]
Track call : [Track Ball]

A boxed notation ( XXXX ) indicates display of a menu item.

Example : BASIC

15

(1)

Tuning knob

Rain/snow reflection knob

Sea clutter knob

Sensitivity knob

(2) (3) (5) (8) (14) (17) (18) (19)

Track ball

(15)

Jog dial

(4) (6) (7) (9) (10) (11) (13) (12) (16)

16

2.1.2 Configuration and functions of the keys on keyboard

Nineteen keys on keyboard are available in total.
The keys on keyboard are classified into two major types based on the operation mode; keys in
short mode

short modeshort mode

short mode

and keys in long mode

long modelong mode

long mode.

A short mode is mainly used for setting key functions to ON/OFF and a long mode is used for
displaying detail menus related to the key functions.
This method enables users to set related key functions directly with fewer keys.
A short mode refers to the pressing of a key for short time and a long mode refers to the pressing
of a key for two seconds or more continuously.

The functions of the keys in short mode and those in long mode are described below.

(1) [STBY] key

Short mode : Power ON

Long mode : The power is turned off when this key is pressed together with [TX/PRF] key in

long mode.

(2) [TX/PRF] key

Short mode : When this key is pressed from a standby state, the equipment is set to a

transmission state. When this key is pressed in a transmission state, the
repetition frequency is changed.

Long mode : The power is turned off when this key is pressed together with the [STBY] key

in long mode.

(3) [EBL1/EBL2] key

Short mode : EBL ON/OFF of EBL

Long mode : Switches EBL1/EBL2.

(4) [VRM1/VRM2] key

Short mode : VRM ON/OFF

Long mode : Switches VRM1/VRM2

(5) [ALARM ACK] key

Short mode : Stops alarm buzzer.

Long mode : Displays alarm detail setting/error log.

(6) [MOB] key

Short mode : Starts the MOB function.

Long mode : Stops the MOB function.

(7) [CLEAR] key
In short mode, the operation varies depending on whether it is during menu operation and

other states, which are described later.

17

During menu operation

Short mode : During item selection on a menu, this key stops the current item selection.

When item selection is completed, this key returns control to the menu one
level above.

State other than menu operation

Short mode : When this key is pressed while the cursor overlaps with the ATA symbol, this

operation erases the ATA symbol.

When the key is pressed while cursor does not overlap with the ATA symbol, the

target of the symbol number that is selected by numeric display is erased.

Long mode : Erases the entire ATA symbol.

(8) [DIMM] key

Short mode : Changes the brightness of the key on the keyboard unit.

Long mode : Displays a day/night menu.

(9) [FUNC] key

Short mode : Switches the function setting.

Long mode : Displays a function setting menu.

(10) [OFF CENT] key

Short mode : Moves the center to the cursor position/returns to the center.

Long mode : Continuously moves the center.

(11) [RR/HL] key

Short mode : FIXM ON/OFF

Long mode : Sets the display of a highlighted line of the bow of the ship to OFF.

(12) [TM/RM] key

Short mode : Switches TM/RM/CTM (unlimited TM).

Long mode : Applies manual reset in TM mode.

(13) [AZI MODE] key

Short mode : Switches an azimuth mode (HUP/NUP/CUP).

Long mode : Displays a gyro setting menu.

(14) [TGT DATA] key

Short mode : Displays target information or the next target information.

(When a target is being displayed)

Long mode : Set ATA display to ON/OFF.

Switches the display when MOB/WPT is set to ON.

MOB → ATA → WPT → MOB

18

(15) [TRAILS] key

Short mode :

Switches to time track/continuous track/time track + continuous track/non-display.

Long mode : Displays a track menu (track erase, track time setting change, and so on).

(16) [CSR POS] key

Short mode : Outputs the information of the bearing and distance from the current own

ship's position to cursor position. It is output by the serial communication from
the RS232C port.

Long mode : Outputs the information of the bearing and distance when the cursor is the own

ship's position. It is output by the serial communication from the RS232C port.
(Outputs "distance = 0NM", "bearing=0 degree").

(17) [+RANGE-] key

Short mode : Switches the range (+: range up, -: range down).

Long mode : Switches the continuous range (+: continuously range up, -: continuously range

down)

* When the [+RANGE-] key is pressed while the zoom function is ON, the zoom function is

automatically released.

(18) [ACQ/ENT] key

Short mode : Target capture

Long mode : ACQ mode menu

(19) [MENU] key

Short mode : Set a menu to ON/OFF.

Long mode : Set an initialization menu to ON/OFF

* Initialization refers to the settings made at installation.

19

2.1.3 Structure and the functions of knobs

Four knobs are available.
The knobs are classified into three main modes based on the operation. One type is a knob

knob knob

knob

operation mode

operation modeoperation mode

operation mode and other two are a short mode

short modeshort mode

short mode and a long mode

long modelong mode

long mode, similar to the key operations.

In knob operation mode, the values change according to the rotation of the knob. The short mode
and the long mode are the same operation as for the keys.

The function of each knob is described below.

[AUTO-TUNE] knob

Short mode : Switches to automatic/manual.

Long mode : When the power supply is set to ON while this key is pressed, horizontal

orientation display is set (12 o'clock).

Knob operation : The equipment is tuned when the knob is set to the center.

[AUTO-RAIN] knob

Short mode : Switches to automatic/manual.

Long mode : When the power supply is set to ON while this key is pressed, vertical

clockwise rotation display is set (3 o'clock).

Knob operation : The control function reaches the maximum when the knob is turned to the

full position in the clockwise direction and the minimum when the knob is
turned to the full position in the anti-clockwise direction.

[AUTO-SEA] knob

Short mode : Switches to automatic/manual.

Long mode : When the power supply is set to ON while this key is pressed, horizontal

reverse orientation display is set (6 o'clock).

Knob operation : When the knob is turned to the full position in clockwise direction, the

control function reaches the maximum level and when the knob is turned
to the full position in the anti-clockwise direction, the control function
reaches the minimum level.

[GAIN/PL] knob

Short mode : Switches a transmission pulse width.

Long mode : Displays a panel 1/2 switching menu while the power is supplied.

When the power is not supplied, vertical anti-clockwise rotation display is

set if the power supply is set to ON (9 o'clock).

Knob operation : When the knob is turned to the full position in the clockwise direction, the

sensitivity reaches the maximum level and when the knob is turned to the
full position in the anti-clockwise direction, the sensitivity reaches the
minimum level.

20

2.1.4 Structure and functions of the jog dial

Two jog dial operation modes are available.
One mode is roration mode

roration moderoration mode

roration mode

, and other mode is short mode

short modeshort mode

short mode.

Rotation mode : In this mode, items displayed on EBL/VRM/ATA display/menu changes when the

jog dial is turned. The cursor on the bottom-right of the screen and the
characters displayed on the right-hand side indicates which rotation mode is the
current mode.

Rotation modes an mode display

Purpose Mode name

Characters that are displayed on the

bottom-right of the screen

EBL setting EBL mode JOG EBL1*

VRM setting VRM mode JOG VRM1*

Switching MARPA value
data display

MARPA display mode JOG ATA

Menu display Menu selection mode JOG MENU

*At operation 1 and 2, EBL1, EBL2, VRM1, and VRM2 are displayed respectively.

Short mode : When menu display is not set, the mode is switched to EBL/VRM/ATA operation

mode whenever the jog dial is pressed.

This mode determines the menu of the line that was selected when a menu is

displayed.

(Same operation as

(Same operation as (Same operation as

(Same operation as [ACQ/ENT]))))

2.1.5 Structure and functions of the track ball

Normally [TRACK BALL] is used for operating a cross cursor.
When [TRACK BALL] is moved, the distance from own ship and the azimuth are displayed at the
bottom-left corner of the screen. When navigation equipment is connected, the latitude and
longitude are also displayed. When a MARPA function is attached, a required target can be
captured by moving the cross cursor by operating [TRACK BALL] to the target.

By pressing the [OFF CENT] key, the center of PPI can be moved to the cross cursor position.
By moving [TRACK BALL] while pressing the [OFF CENT] key in long mode, the center of PPI can
be moved to the position of [TRACK BALL] consecutively.

21

2.2 Description of Screen Display

<Horizontal display>

Own ship information
Own ship course
Own ship speed
Position information/navigation equipment
Latitude
Longitude
EBL1 value display
EBL2 value display
VRM1 value display
VRM2 value display
ATA target information
Target number
Distance to the target
Azimuth to the target
Course of the target
Target speed

Closest approach distance of the target
Closest approach time of the target
Vector length
Various alarm display area

Distance range
Fixed distance scale interval
Transmission status display
Motion display
PPI azimuth display

Function setting status

Sea clutter/rain and snow reflection
suppression mode display

Guard zone operation displayed

Tune bar displa

y

Jog dial mode display

Zoom function display
Interference suppression function display
Target expansion function display
Correlation processing function display
Trail function display
Trail time display

Cursor information
Azimuth to the cursor
Distance to the cursor
Latitude to the cursor
Longitude to the cursor

Pulse width displa

y

Day/night mode displa

y

22

<Vertical display>

Own ship information
Own ship course
Own ship speed
Position information/navigation equipment
Latitude
Longitude
EBL1 value display
EBL2 value display
VRM1 value display
VRM2 value display

ATA target information
Target number
Distance to the target
Azimuth to the target
Course of the target
Target speed

Closest approach distance of the target
Closest approach time of the target
Vector length

Various alarm display area

Cursor information
Azimuth to the cursor
Distance to the cursor
Latitude to the cursor
Longitude to the cursor

Function setting status

Sea clutter/rain and snow reflection
suppression mode display

Guard zone operation displayed

Pulse width displa

y

Tune bar displa

y

Jog dial mode displa

y

Trail time display

PPI azimuth display

Motion display

Transmission status display

Fixed distance scale interval

Distance range

Trail function display

Correlation processing function display

Target expansion function display

Interference suppression function display

Zoom function display

Day/night mode displa

y

23

2.3 Menu Functions

This radar equipment has the functions available through menus in addition to the functions
available on the keyboard unit and volume knobs. This section describes the structure of the
menus, the functions, and the setting method.

2.3.1 Menu structure

This radar equipment can display information in Japanese, English, and other languages (French,
Spanish, Italian, Danish, and Norwegian) on the screen by switching.

●●●● See 3.3.3, "Switching the display language [DIMM]" for switching a display

language.

Opening a menu

Press the [MENU] key to display a menu.

Closing a menu

To close a menu, press the [MENU] key or keep pressing the [CLEAR] key until the menu is
closed.

Moving to a menu at a lower level

Menus are organized in a hierarchical structure. To move control to a menu at a lower level,
select the characters of a required menu item using [JOG DIAL] and press the [JOG DIAL] or

[ACQ/ENT] key. Consequently, the menu at the lower level is displayed.

Moving to a menu at an upper level

To return control to a menu at the immediate upper level, press the [CLEAR] key. The menu
at the immediate upper level is displayed.

Determining an item

To determine an item after changing the value using [TRACK BALL] or displaying the setting
item in reverse video, press the [JOG DIAL] or [ACQ/ENT] key.

Menu lists are described below.
Menus are classified into general function setting menus that are displayed by
pressing a key in short mode and setting menus at installation that are displayed
by pressing a key in long mode.

24

General menu [MENU] (1/1 page)

1st level 2nd level

BASIC >

DISP OPTIONS >
TX PLAN >
INFORMATION >
HELP >

MENU

INTERFERENCE IR1

TGT EXPANSION OFF
PROCESS OFF
PROC SW RANGE 3.0
ECHO POWER FULL
ZOOM OFF

EBL BEARING TRUE

FROATING EBL OFF
PARALLEL LINE OFF
VRM1 UNITS NM
VRM2 UNITS NM
WAYPOINT OFF
POSITION LL
LL-TD CONV >

TX PLAN OFF

TX PERIOD 10 SCAN
STBY PERIOD 3 MIN

SOFTWARE VER.

PORT CONNECT

INITIALIZE ALL ACQENT+MENU
SELF TEST EBL+VRM
LANGUAGE DIMM
DISP MOUNT UP TUNE
DISP MOUNT R RAIN
DISP MOUNT REV SEA
DISP MOUNT L GAIN

INFORMATION

HELP

BASIC

DISP OPTIONS

TX PLAN

→ BASIC (3rd level menu available)

Sets operation and processing mainly related to radar images.

↑
Display method
Press [MENU] in short mode.

→ HELP

Displays explanation of keys and menu operation.

→ INFORMATION (3rd level menu available)

Displays the software version and operation status of the connected equipment.

→ TX PLAN (3rd level menu available)

Sets an intermittent transmission mode and detail operation.

→ DISP OPTIONS (3rd and 4th level menus are available)

Sets markers that are displayed in graphic mode and functions that displa

y

data from navigation equipment.

25

Installation setting menu [MENU] (1/3 pages)

1st level 2nd level

GYRO SETTING

123.4°
RADAR >
GPS >
ATA　SETTING >
DATA/IN OUT >
BAUD RATE >
DISPLAY MOUNT>
LCD SETTING >
BACKUP MEMORY>
INIT MENU >

INSTALLATION

GYRO SETTING 123.4°

SIMULATION OFF
RADAR >
GPS >
ATA　SETTING >
DATA/IN OUT >
BAUD RATE >
DISPLAY MOUNT>
LCD SETTING >
BACKUP MEMORY>
INIT MENU >

GYRO SETTING 123.4°

SIMULATION OFF
OFF

INTERNAL
EXTERNAL
DATA/IN OUT >
BAUD RATE >
DISPLAY MOUNT>
LCD SETTING >
BACKUP MEMORY>
INIT MENU >

RADAR ADJUST >

RADAR ADJUST2>
RADAR SETTING>
ROT SPEED >

INSTALLATION

INSTALLATION

RADAR

→ GYRO SETTING

Sets gyro data.

↑
Display method
Press [MENU] in long mode.

→ RADAR ADJUST (3rd and 4th level menus available)

Sets basic information at installation of radar equipment such as tuning,
distance, and azimuth.

→ SIMULATION

Switches between a simulator mode and a normal mode alternately.

26

Installation setting menu [MENU] continued (2/3 pages)

1st level 2nd level

GYRO SETTING 123.4°
SIMULATION OFF
RADAR >

GPS >

ATA　SETTING >
DATA/IN OUT >
BAUD RATE >
DISPLAY MOUNT>
LCD SETTING >
BACKUP MEMORY>
INIT MENU >

INSTALLATION

GPS SETTING >

GPS SETTING2 >
DGPS SETTING >
WAAS SETTING >
GPS INFO >

ATA OFF

LEVEL H 64

LEVEL L 64
LEVEL G 64
VECTOR CONST 4
AUTO ACQ OFF
TEST VIDEO OFF
NUMBERING AUTO
GATE DISP OFF

COURSE IN COMPASS GYRO
MANUAL COURSE 000°

SPEED IN GPS BT

MANUAL SPEED 00.0 KT
POSITION IN GPS
MANUAL POS. N 36°36.000'

E136°36.000'

COMPASS PORT JLR-10(9600)
2ND PANEL DISABLE
NMEA OUT >
CALIBRATION

PC 4800

PANEL 4800

BAUD RATE

GPS

ATA　SETTING

DATA/IN OUT

→ GPS SETTIGN (3rd and 4th level menus available)

Sets initial values in the GPS receiver.

↑
Display method
Press [MENU] in long mode.

→ BAUD RATE (3rd level menu available)

Sets a communication speed with a personal computer.

→ DATA/IN OUT (3rd and 4th level menus)

Sets information for receiving data from a sensor such as speed, course, an

d

position.

→ ATA SETTING (3rd level menu available)

Initializes the optional MARPA.

27

Installation setting menu [MENU] Continued (3/3 pages)

1st level 2nd level

GYRO SETTING 123.4°
SIMULATION OFF
RADAR >
GPS >
ATA　SETTING >
DATA/IN OUT >
BAUD RATE >

DISPLAY MOUNT HORIZONTAL

LCD SETTING >
BACKUP MEMORY>
INIT MENU >

INSTALLATION

GYRO SETTING 123.4°
SIMULATION OFF
RADAR >
GPS >
ATA　SETTING >
DATA/IN OUT >

DISPLAY MOUNT
HORIZONTAL

VERTICAL-RIGHT
INVERSION
VERTICAL-LEFT

HS DISP START 143

VS DISP START 37

STORE >

LOAD >

DISPLAY MOUNT

LCD SETTING

BACKUP MEMORY

→ DISPLAY MOUNT

Sets a display orientation of the display unit.

↑
Display method
Press [MENU] in long mode.

→ BACKUP MEMORY

→ LCD SETTING (3rd level menu available)

Sets a display position of the LCD.

28

Menu by a direct key [TRAILS] (1/1 page)

1st level 2nd level

TRAIL INTERVAL 6M

TRAIL REF LVL 8
TRAIL SUPRESS 0.0NM
TRAIL CLEAR OFF
RANGE TRAIL CLEAR

TRAILS

TRAIL INTERVAL 6M

6M 8
TRAIL SUPRESS 0.0NM
TRAIL CLEAR OFF
RANGE TRAIL CLEAR

TRAIL INTERVAL 6M

TRAIL REF LVL 8

8 0.0NM
TRAIL CLEAR OFF
RANGE TRAIL CLEAR

TRAIL INTERVAL 6M
TRAIL REF LVL 8

TRAIL SUPRESS 0.0NM

0.0NM OFF
RANGE TRAIL CLEAR

TRAIL INTERVAL 6M
TRAIL REF LVL 8

TRAIL CLEAR 0.0NM
OFF OFF

ON CLEAR

TRAIL INTERVAL 6M
TRAIL REF LVL 8

RANGE TRAIL 0.0NM
CLEAR OFF

KEEP CLEAR

TRAILS

TRAILS

TRAILS

TRAILS

TRAILS

→ TRAIL SUPPRESS

Sets the range for suppressing the trail from own ship.

↑
Display method
Press the

[TRAILS]

key in long mode

→ RANGE TRAIL

Sets that trail information is not cleared even if the range is changed.

→ TRAIL CLEAR

Clears the trail information from the memory.

→ TRAIL REF LVL

Sets a threshold value for determining whether trail information is stored.

→ TRAIL INTERVAL

Sets a time interval of time trail.

29

Menu by a direct key [DIMM] : Setting day/night mode and color and brightness of the selected screen

1st level 2nd level

MODE DAY1

COLOR >
BRILLIANCE >

DAY/NIGHT

MODE DAY1
DAY1

DAY2
NIGHT1
NIGHT2

DAY1 >

DAY2 >
NIGHT1 >
NIGHT2 >

DAY1 >

DAY2 >
NIGHT1 >
NIGHT2 >

DAY/NIGHT

COLOR

BRILLIANCE

→ BRILLIANCE (3rd and 4th levels available)

Sets the brightness of the selected mode and screen.

↑
Display method
Press the [DIMM] key in lone mode.

→ COLOR (3rd and 4th levels available)

Sets the color of the selected mode and screen.

→ DAY/NIGHT

Select one of the four day/night modes.

30

Menu by a direct key [ALARM ACK] : Setting various alarm functions

1st level 2nd level

BUZZER >

ALARM >
ERROR LOG >
ERROR LOG CLR>

ALARM

VOLUME 255

255

ALARM ZONE OFF

GUARD ZONE >
ATA GUARD RING

BACK

CPA/TCPA 1
GZ 3
LOST 2
PRC-TRIGER 1

NEXT

BUZZER >

ERROR LOG CLR
OFF

ON

ERROR LOG

BUZZER

ALARM

ALARM

→ ERROR LOG (several pages are available for the 2nd page)

Displays various types of error log.

↑
Display method
Press the

[ALARM ACK]

key in lon

g

mode.

→ ALARM

Sets various alarms. (3rd level available)

→ BUZZER

Sets a buzzer volume.

→ ERROR LOG CLR

Clears the error log.

31

Menu by a direct key [ATA] (1/3 pages) : Setting functions : This menu is displayed at installation of the option only.

1st level 2nd level

VECTOR TRUE

VECTOR LENGTH 6MIN
CPA 0.0NM
CPA RING OFF
TCPA 0MIN
COLLISION OFF
TARGET NUMBER ON
GATE SIZE S

ATA

VECTOR TRUE
RELATIVE 6MIN

TRUE 0.0NM
CPA RING OFF
TCPA 0MIN
COLLISION OFF
TARGET NUMBER ON
GATE SIZE S

VECTOR TRUE

VECTOR LENGTH 6MIN
1～60 0.0NM

6MIN OFF
TCPA 0MIN
COLLISION OFF
TARGET NUMBER ON

GATE SIZE S

VECTOR TRUE
VECTOR LENGTH 6MIN

CPA 0.0NM

0.0～9.9 OFF

0.0NM 0MIN
COLLISION OFF
TARGET NUMBER ON
GATE SIZE S

ATA

ATA

ATA

→ CPA

Sets CPA.

→ VECTOR LENGTH

Sets a vector length.

→ VECTOR

Sets a vector.

32

Menu by a direct key [ATA] (2/3 pages) : Setting functions : This menu is displayed at installation of the option only.

1st level 2nd level

VECTOR TRUE

VECTOR LENGTH 6MIN
CPA 0.0NM
CPA RING OFF
TCPA 0MIN
COLLISION OFF
TARGET NUMBER ON
GATE SIZE S

ATA

VECTOR TRUE
VECTOR LENGTH 6MIN
CPA 0.0NM

CPA RING OFF
OFF 0MIN

ON OFF
TARGET NUMBER ON
GATE SIZE S

VECTOR TRUE
VECTOR LENGTH 6MIN
CPA 0.0NM
CPA RING OFF

TCPA 0MIN
0～99 OFF

0MIN ON
GATE SIZE S

VECTOR TRUE
VECTOR LENGTH 6MIN
CPA 0.0NM
CPA RING OFF
TCPA 0MIN

COLLISION OFF
OFF ON

ON S

ATA

ATA

ATA

→ INTERCEPT

→ TCPA

Sets TCPA

→ CPA RING

Sets a CPA ring.

33

Menu by a direct key [ATA] (3/3 pages) : Setting functions : This menu is displayed at installation of the option only.

1st level 2nd level

VECTOR TRUE

VECTOR LENGTH 6MIN
CPA 0.0NM
CPA RING OFF
TCPA 0MIN
COLLISION OFF
TARGET NUMBER ON
GATE SIZE S

ATA

VECTOR TRUE
VECTOR LENGTH 6MIN
CPA 0.0NM
CPA RING OFF
TCPA 0MIN

TARGET NUMBER OFF
OFF ON

ON S

VECTOR TRUE
VECTOR LENGTH 6MIN
CPA 0.0NM
CPA RING OFF

GATE SIZE 0MIN
S OFF

MON
LS

ATA

ATA

→ GATE SIZE

Sets a tracking gate size.

→ TARGET NUMBER

Sets a display method of a target number.

34

Menu initialization by pressing a key at Power ON

1st level

INITIALIZE ALL SETTING

ARE YOU SURE?

NO

YES

INITIALIZE ALL

Setting menu language by pressing a key at Power ON

1st level

SELECT YOUR LANGUAGE

表示言語を選んでください

ENGLISH

NORSK
FRANCAIS
ESPANYOL
ITALIANO
DUTCH

日本語

LANGUAGE SELECTION

言語選択

↑
Display method
Set the power to ON by pressing the

[ACQ/ENT]

key and

[MENU]

together.

→ INITIALIZE ALL

Performs initialization operation.

↑
Display method
Set the power to ON by pressin

g

the [DIMM] key.

→ LANGUAGE SELECTION

Sets a language.

35

Chapter 3 Operation Procedures

3.1 Operation Flow

Power-on and start

▼

Tuning

▼

Observation and image adjustment

▼

Data acquisition and measuring

▼

Operation termination and stop

This chapter explains operations roughly divided into the following:

- Power-on operation

- Basic operation

- General operation

- Function key operation

Power-on operation must be set before this radar is turned on/off or the equipment is operated.
Basic operation is the minimum operation for operating the radar.
General operation is necessary for customizing the settings used with basic operation to best suit

your needs or for using more useful functions.
Function key operation is necessary for storing the settings determined through general
operation by the user or for implementing more advanced usage.

The following explains each basic operation:

36

3.2 Power-on Operation

3.2.1 Power-on and start

1. Turning on the power [STBY]

To turn on the power, press the [STBY] key.
When the power is turned on, the countdown timer is displayed on the screen, and the standby
state is placed after 1 minute and 30 seconds.
The total duty time and total transmitting time are displayed. Refer to the time display when
carrying out maintenance work. The time display includes a slight error.

2. Transmitting [TX/PRF]

To transmit data from the standby state, press the [TX/PRF] key.
To change the transmitting state back to the standby state, press the [STBY] key.

3.2.2 Tuning [AUTO-TUNE]

This radar can be tuned manually or automatically. To switch between manual tuning and
automatic tuning, press the [AUTO-TUNE] control key. When automatic tuning is selected, "A" is
displayed to the left of the tuning indicator at the right bottom of the screen.

1. Switching the tuning mode

If manual tuning is currently selected, pressing the [AUTO-TUNE] control key changes to
automatic tuning. If automatic tuning is currently selected, pressing the key changes to
manual turning. The automatic tuning mode and manual tuning mode are switched back
and forth each time the key is pressed.

2. Turning the tuning control [AUTO-TUNE]

If manual tuning is currently selected, enlarge the image by turning the tuning control on the
keyboard. The tuning indicator serves as a rule of thumb for manual tuning. Adjust the
image so that the pointer of the indicator reads the maximum value.
Automatic tuning does not need the turning of the tuning control.
If no image appears, turn the sensitivity control on the keyboard fully to the right, and turn the
sea clutter control and the rain/snow clutter control fully to the left.

3.2.3 Observation and image adjustment [+RANGE-]

Display the optimum image by turning the tuning control (if manual tuning is selected),
sensitivity control, sea clutter control, and rain/snow clutter control on the keyboard.
The image observation range can be changed by pressing the [+RANGE-] key.
The currently selected range is displayed at the upper left of the screen. (See 2.2, "Description of
Screen Display.")

3.2.4 Data acquisition and measuring

For each operation, see 3.4, "Basic Operation" and Chapter 4, "Interpret the PPI Screen."

37

3.2.5 Operation termination and stop [STBY], [TX/PRF]

1. Canceling transmission [STBY]

Press the [STBY] key.
Transmission is canceled and the screen enters the standby state.

2. Turning off the power

Press the [STBY] key and [TX/PRF] key at the same time.
The radar enters the stopped state and all the functions stop.

Before starting maintenance work or the like, stop power supply by turning off the
power and disconnecting the power connector from the rectifier and the display.
Even if the power switch is turned off, there are live components in each unit. In
this status, maintenance or inspection work causes an electric shock, system
failure, or accident.

38

3.3 Preparation for Observation

3.3.1 Changing the brightness of the LCD

(a) Turning the BRILL control of the display clockwise increases the brightness. Turning it

counterclockwise decreases the brightness. Use the BRILL control to change the
brightness of the overall LCD.

3.3.2 Changing the brightness of the keyboard [DIMM]

(a) Pressing the [DIMM] key changes the brightness of the keyboard.
Each time the [DIMM] key is pressed, the value indicating the brightness changes 1 → 2 →

3 → 4 ... 7 → 8 , 8 → 7 → 6 → ... 2 → 1 , 1 → 2 → 3. As a greater value is selected, the
brightness increases.

When the key is pressed again at the brightness level 8 or 1, the buzzer sounds indicating

the maximum or minimum brightness.

Caution

●●●● The brightness set by the [DIMM] key does not change even if the brightness is

set to the minimum by another switch.

3.3.3 Switching the display language [DIMM]

The following can be selected as a display language:

- Japanese

- English

- Norwegian

- French

- Spanish

- Italian

- Danish

(a) Turn on the power while pressing the [DIMM] key. The menu below is displayed.
(Continue pressing the [DIMM] key until the following menu is displayed, since it will take

about 10 seconds before the menu is displayed.)

39

SELECT YOUR LANGUAGE

表示言語を選んでください

ENGLISH

NORSK
FRANCAIS
ESPANYOL
ITALIANO
DANISH

日本語

LANGUAGE SELECTION

言語選択

(b) When the language selection menu is displayed, select the target language using [JOG

DIAL], and then press the [JOG DIAL] or [ACQ/ENT] key. The message is displayed

asking if you want the selected language. If the selected language is the right one, press
the [JOG DIAL] or [ACQ/ENT] key again. The system starts with the selected language.

YOUR SELECT IS
ENGILISH
ARE YOU SURE?

選択された言語は英語です
英語です
宜しいですか？

NO

YES

LANGUAGE SELECTION

言語選択

3.3.4 Setting the volume of the buzzer [ALARM ACK]

Set the volume of sound emitted when the key is pressed or an alarm is issued.

(a) Hold down the [ALARM ACK] key to display the ALARM menu.
(b) Select BUZZER , and then press the [JOG DIAL] or [ACQ/ENT] key.
(c) The menu below is displayed. Set a volume with a value 0 to 255 by turning [JOG DIAL],

and then press the [JOG DIAL] or [ACQ/ENT] key.

Caution

●●●● Be careful that if the volume of the buzzer is set to 0 or a value not high enough,

you may not hear the buzzer when an alarm is issued.

VOLUME 255

255

BUZZER

40

3.3.5 Switching the day/night mode [DIMM]

This radar permits the settings of four patterns of the screen brightness and display colors.
The four patterns are day 1, day 2, night 1, and night 2.
The switching of the above four patterns instantaneously selects the mode that can choose the
screen brightness and display color.
Thus, this function enables more than one person to set the color and brightness according to their
usage.

1. Switching the day/night mode [DIMM]

(a) Hold down the [DIMM] key to display the DAY/NIGHT menu.
(b) Operate [JOG DIAL] to select MODE , and then press the [JOG DIAL] or [ACQ/ENT] key.
(c) The menu below is displayed. Select the DAY1 , DAY2 , NIGHT1 , or NIGHT2

mode you want, and then press the [JOG DIAL] or [ACQ/ENT] key to determine the
selection.

MODE DAY1
DAY1

DAY2
NIGHT1

NIGHT2

DAY/NIGHT

2. Switching the display color [DIMM]

The display color can be changed only for screens for which it is selectable.
The table below shows the screens for which a display color can be selected.

Color-selectable screens and display colors

Color-selectable screen Color 1 Color 2 Color 3 Color 4

Background color inside PPI BLACK BLUE GRAY −

Background color outside PPI BLACK BLUE GRAY −

Color of echo YELLOW ORANGE GREEN COLOR

Color of timing trail SKY WHTIE GREEN −

Color of continuous trail SKY WHTIE GREEN −

Take the following steps to select the display color:

Take the following steps to select the display color:Take the following steps to select the display color:

Take the following steps to select the display color:
(a) Hold down the [DIMM] key to display the DAY/NIGHT menu.
(b) Operate [JOG DIAL] to select COLOR , and then press the [JOG DIAL] or [ACQ/ENT]

key to determine the selection.

(c) Select the DAY1 , DAY2 , NIGHT1 , or NIGHT2 mode you want, and then press

the [JOG DIAL] or [ACQ/ENT] key to determine the mode.
(This operation determines that the color of which pattern of the four is selected.)
(d) The left menu below is displayed. Select the INSIDE , OUTSIDE , ECHO ,

TRAIL-TIME , or TRAIL-CONT screen for which you want to set the color, and then

press the [JOG DIAL] or [ACQ/ENT] key to determine the selection.

41

(e) Subsequently, the right menu below is displayed. Operate [JOG DIAL] to select the color

to be set, and then press the [JOG DIAL] or [ACQ/ENT] key to determine the selection.

INSIDE BLUE INSIDE BLUE

OUTSIDE BLUE BLACK BLUE
ECHO COLOR BLUE COLOR
TRAIL-TIME BLUE GRAY BLUE
TRAIL-CONT BLUE TRAIL-CONT BLUE

DAY1 DAY1

3. Switching the brightness of the screen [DIMM]

The brightness of the screen can be changed only for screens for which it is selectable.
The brightness of the screen is selectable for ten screens of the five PPI system screens and five
graphic system screens below.

PPI screens (related to radar images)

<1> Background color inside PPI
<2> Background color outside PPI
<3> Echo
<4> Timing trail
<5> Continuous trail

Graphic screens (related to markers and symbols)

<6> (SHM/cursor/WAYPOINT)
<7> (EBL, VRM, fixed marker)
<8> White symbol of MARPA
<9> Red symbol of MARPA
<10> Numeric value display

Take the followi

Take the followiTake the followi

Take the following steps to change the brightness of the screen:

ng steps to change the brightness of the screen:ng steps to change the brightness of the screen:

ng steps to change the brightness of the screen:
(a) Hold down the [DIMM] key to display the DAY/NIGHT menu.
(b) Operate [JOG DIAL] to select BRILLIANCE , and then press the [JOG DIAL] or

[ACQ/ENT] key to determine the selection.

(c) Operate [JOG DIAL] to select the DAY1 , DAY2 , NIGHT1 , or NIGHT2 mode you

want, and then press the [JOG DIAL] or [ACQ/ENT] key to determine the mode.
(This operation determines that the brightness of which pattern of the four is selected.)
(d) The left menu below is displayed. Operate [JOG DIAL] to select one of the following

screen on which you want to set the brightness, and then press the [JOG DIAL] or

[ACQ/ENT] key:
INSIDE , OUTSIDE , ECHO , TRAIL-TIME , TRAIL-CONT ,

HL/CURSOR/WPT , EBL/VRM/RR , ATA WHITE , ATA RED , CHARACTER ,

and PANEL DIMMER
(e) Finally, the right menu below is displayed. Operate [JOG DIAL] to select the value as the

brightness to be set, and then press the [JOG DIAL] or [ACQ/ENT] key to determine the

selection.

42

INSIDE 4 INSIDE 4

OUTSIDE 4 4 4
ECHO 4 ECHO 4
TRAIL-TIME 4 TRAIL-TIME 4
TRAIL-CONT 4 TRAIL-CONT 4
HL/CURSOR/WPT 4 HL/CURSOR/WPT 4
EBL/VRM/RR 4 EBL/VRM/RR 4
ATA WHITE 4 ATA WHITE 4
ATA RED 4 ATA RED 4
CHARACTOR 4 CHARACTOR 4
PANEL DIMMER 8 PANEL DIMMER 8

DAY1 DAY1

Note

Brightness can be set by the lowest line

PANEL DIMMER

of this menu as well as the description

of 3.3.2 "Changing the brightness of the keyboard [DIMM]".

43

3.4 Basic Operation

3.4.1 Transmitting [TX/PRF]

(a) Press the [TX/PRF] key.
The standby state is changed to the transmitting state.

3.4.2 Halting transmission [STBY]

(a) Press the [STBY] key.
The transmitting state is changed to the standby state. The screen displays "STBY."

3.4.3 Changing the range [+RANGE-]

(a) Press the [+RANGE-] key.
Pressing the key on the + side increases the range.
Pressing the key on the - side decreases the range.

3.4.4 Erasing/displaying the fixed range marker [RR/HL]

(a) The fixed range marker is turned on/off each time the [RR/HL] key is pressed.

3.4.5 Erasing the ship's heading marker [RR/HL]

(a) The ship's heading marker is not displayed while the [RR/HL] key is held down.

3.4.6 Tuning

See 3.2.2, "Tuning [AUTO-TUNE]."

3.4.7 Adjusting sensitivity [GAIN/PL]

(a) Sensitivity adjustment ([GAIN/PL] control) is not necessary for general use.
The [GAIN/PL] control is always set to the maximum (turned fully to the right).
However, if many noises appear on the screen, turn the [GAIN/PL] control to set sensitivity

for easy observation.

Caution

●●●● If the set sensitivity is too low, the target of a dangerous object or ship may not

be displayed.

●●●● In some cases, if the set sensitivity is too high, the receiver noise on the radar

screen increases and interferes with the observation.

44

3.5 General Operation

3.5.1 Eliminating radar interference [MENU]

If radar interference occurs, take the following steps to set an interference elimination level:

(a) Press the [MENU] key to display MENU .
(b) Select BASIC and then INTERFERENCE pressing the [JOG DIAL] or [ACQ/ENT]

key after each selection.
(c) The menu below is displayed. Select OFF , IR1 , IR2 , or IR3 , and then press the

[JOG DIAL] or [ACQ/ENT] key to determine the selection.

INTERFERENCE IR1
OFF OFF

IR1 OFF
IR2 3.0
IR3 FULL
ZOOM OFF

BASIC

Note

The interference elimination levels are IR1

→

IR2 → IR3 starting with the lowest level.

However, if the set level is too high, a problem such as the decrease of sensitivity occurs. The lowest

level IR1 should be selected for general use.

45

3.5.2 When it is raining or snowing [AUTO-RAIN]

Do not set the rain/snow clutter function to too high a suppression level.
Otherwise, not only echoes from rain/snow but also the targets of ships or
dangerous objects are suppressed, which may disturb the detection.
Set the best suppression level whenever you use the ran/snow clutter suppression
function.

When it rains or snows, echoes (rain clutters) from rain or snow are displayed on the PPI screen.
As a result, the images of echoes from ships or the likes are difficult to observe.
Use of the manual or automatic rain/snow clutter function suppresses rain clutters and makes it
easy to observe targets.
While the automatic rain/snow clutter function is working, the manual rain/snow clutter function
(control) cannot be used.
To select the manual or automatic rain/snow clutter function of this radar, operate the
[AUTO-RAIN] control. When the automatic rain/snow clutter suppression function is ON, "A
RAIN" is displayed on the upper right of the screen.

(a) Switching the rain/snow clutter suppression mode

If manual rain/snow clutter suppression is currently selected, pressing the [AUTO-RAIN]
control key changes to automatic rain/snow clutter suppression. If auto rain/snow clutter
suppression is currently selected, pressing the [AUTO-RAIN] control key changes to manual
rain/snow clutter suppression. The automatic rain/snow clutter suppression mode and
manual rain/snow clutter suppression mode are switched back and forth each time the key
is pressed.

(b) Turning the rain/snow clutter control

If manual rain/snow clutter suppression is currently selected, as the rain/snow clutter control
is turned clockwise, the rain/snow clutter suppression function works more strongly.

46

3.5.3 When the sea is rough [AUTO-SEA]

Do not set the sea clutter suppression function to a level at which it clears all sea
clutters in short range.
Otherwise, not only echoes from waves but also the targets of ships or dangerous
objects are suppressed, which may disturb the detection.
Set the best suppression level whenever you use the sea clutter suppression
function.

If the sea becomes rough, echoes (sea clutters) from waves are displayed on the PPI screen. As a
result, the images of echoes from ships or the likes are difficult to view. Sea clutters appear more
clearly in shorter ranges.
Use of the manual or automatic sea clutter function suppresses sea clutters and makes it easy to
observe targets.
While the automatic sea clutter function is working, the manual rain/snow clutter function
(control) cannot be used.
To select the manual or automatic rain/snow clutter function of this radar, operate the
[AUTO-SEA] control. When the automatic sea clutter suppression function is ON, "A SEA" is
displayed on the upper right of the screen.

(a) Switching the sea clutter suppression mode

If manual sea clutter suppression is currently selected, pressing the [AUTO-SEA] control key
changes to automatic sea clutter suppression. If auto sea clutter suppression is currently
selected, pressing the [AUTO-SEA] control key changes to manual sea clutter suppression.
The automatic sea clutter suppression mode and manual sea clutter suppression mode
are switched back and forth each time the key is pressed.

(b) Turning the sea clutter control

If manual sea clutter suppression is currently selected, as the sea clutter control is turned
clockwise, the sea clutter suppression function works more strongly.

47

3.5.4 Using the trackball [TRACK BALL]

[TRACK BALL] enables you to easily measure a distance to a target and the bearing at the same

time.
Operate [TRACK BALL] to position the cursor to the target. The distance to the target and the
bearing are displayed at the right bottom of the screen.
If a navigator such as a GPS is connected, the latitude and longitude at the target position can
also be displayed.

In this case, the target is at a position 4 NM from the own ship.

48

3.5.5 Using VRM [VRM1/VRM2], [JOG DIAL]

VRM is a line for measuring a distance to the target that is displayed on the PPI screen.
Since the size of the circle of VRM can be changed freely through [JOG DIAL], a distance to an
arbitrary target can be measured.
This radar can display 2 VRMs (VRM#1 and VRM#2) concurrently.
To display, select, or erase VRM#1/VRM#2, use the [VRM1/VRM2] key.

The VRM status is as follows:

Neither VRM#1

VRM#1VRM#1

VRM#1 nor VRM#2

VRM#2VRM#2

VRM#2 is displayed.

VRM#1

VRM#1VRM#1

VRM#1 is displayed, and VRM#2

VRM#2VRM#2

VRM#2 is not displayed.

VRM#2

VRM#2VRM#2

VRM#2 is displayed, and VRM#1

VRM#1VRM#1

VRM#1 is not displayed.

Both VRM#1

VRM#1VRM#1

VRM#1 and VRM#2

VRM#2VRM#2

VRM#2 are displayed.

Use the following methods to select each state above:

How to operate the [VRM1/VRM2] key

Use the [VRM1/VRM2] key to switch between VRM#1 and VRM#2 and turn ON/OFF
VRM#1/VRM#2.

1. Selecting VRM#1/VRM#2 [VRM1/VRM2]

If neither VRM#1 nor VRM#2 is displayed, VRM#1 or VRM#2 can be selected/displayed by
pressing the [VRM1/VRM2] key.
If both VRM#1 and VRM#2 are displayed, VRM#1 and VRM#2 are selected back and forth by
holding down the [VRM1/VRM2] key.
The currently operable VRM#1/VRM#2 is shown with the VRM value reversed enclosed in
broken lines at the upper right of the screen.

2. Operating VRM#1/VRM#2 [VRM1/VRM2]

The VRM specified in 1 is operable.
After specifying the VRM you want to operate in 1, press [JOG DIAL] several times until the
jog dial mode display at the right bottom of the screen changes to "JOG VRM."

"JOG VRM.""JOG VRM."

"JOG VRM."
[JOG DIAL] enters the VRM operation mode.
In this status, the VRM can be zoomed in/out.
Tur ning [JOG DIAL] clockwise "zooms in"

"zooms in""zooms in"

"zooms in" the VRM.

Tur ning [JOG DIAL] counterclockwise "zooms out"

"zooms out""zooms out"

"zooms out" the VRM.

3. Erasing VRM#1/VRM#2 [VRM1/VRM2]

If both VRM#1 and VRM#2 are displayed, press the [VRM1/VRM2] key to reverse the value of
VRM#1/VRM#2 you want to retain on the screen. In this status, pressing the [VRM1/VRM2]
key erases the non-reversed VRM.
If only VRM#1 or VRM#2 is displayed, press the [VRM1/VRM2] key to reverse the value of
VRM#1/VRM#2. It is enclosed in broken lines.
In this status, pressing the [VRM1/VRM2] key erases the non-reversed VRM.

49

4. Measuring the distance from own ship using VRM#1 [VRM1/VRM2]

(a) Press the [VRM1/VRM2] key to reverse the value of VRM#1.
(b) In this status, turn [JOG DIAL] to adjust the line of VRM#1 to the target, and read the

value of VRM#1 to measure the distance to the target.

In the figure above, the distance from the own ship to the target is 4 NM.

5. Measuring the distance from own ship using VRM#2 [VRM1/VRM2]

(a) Press the [VRM1/VRM2] key to reverse the value of VRM#2.
(b) In this status, turn [JOG DIAL] to adjust the line of VRM#2 to the target, and read the

value of VRM#2 to measure the distance to the target.

Caution

●●●● If EBL2 is in floating EBL mode, the center of VRM2 is the fulcrum of EBL2.

50

VRM2 display with EBL2 in floating EBL mode

6. Setting KM as range units

The range units of VRM1 or VRM2 can be switched to KM or NM.
The range units can be set for VRM1 and VRM2 separately.
The units "KM" or "NM" is displayed following VRM1/VRM2.

Take the following steps to select the range units of VRM:

Take the following steps to select the range units of VRM:Take the following steps to select the range units of VRM:

Take the following steps to select the range units of VRM:
(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then VRM1 UNITS or VRM2 UNITS pressing the

[JOG DIAL] or [ACQ/ENT] key after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select KM or NM , and then press

the [JOG DIAL] or [ACQ/ENT] key to determine the selection.

EBL BEARING TRUE
FROATING EBL OFF
PARALLEL LINE OFF
VRM1 UNITS NM

VRM2 UNITS NM
NM OFF

KM LL
LL-TD CONV>

DISP OPTIONS

Setting of the units of VRM2

51

3.5.6 Using EBL (electronic bearing cursor) [EBL1/EBL2], [TRACK BALL]

EBL (electronic bearing cursor) is a line for measuring the bearing of the target that is displayed
on the PPI screen.
Since the angle of the line of EBL can be changed freely through [JOG DIAL], the bearing of an
arbitrary target can be measured.
This radar can display 2 EBLs (EBL#1 and EBL#2) concurrently.
To display, select, or erase EBL#1/EBL#2, use the [EBL1/EBL2] key.
EBL is displayed on the right side of the screen (horizontal display), or it is displayed in the
numeric value display area at the bottom of the screen (vertical display). Operable EBL1 or
EBL2 is reversed.

The EBL status is as follows:

Neither EBL#1

EBL#1EBL#1

EBL#1 nor EBL#2

EBL#2EBL#2

EBL#2 is displayed.

EBL#1

EBL#1EBL#1

EBL#1 is displayed, and EBL#2

EBL#2EBL#2

EBL#2 is not displayed.

EBL#2

EBL#2EBL#2

EBL#2 is displayed, and EBL#1

EBL#1EBL#1

EBL#1 is not displayed.

Both EBL#1

EBL#1EBL#1

EBL#1 and EBL#2

EBL#2EBL#2

EBL#2 are displayed.

Use the following methods to select each state above:

How to operate the [EBL1/EBL2] key

Use the [EBL1/EBL2] key to switch between EBL#1 and EBL#2 and turn ON/OFF
EBL#1/EBL#2.

1. Selecting EBL#1/EBL#2 [EBL1/EBL2]

If neither EBL#1 nor EBL#2 is displayed, EBL#1 or EBL#2 can be selected/displayed by
pressing the [EBL1/EBL2] key.
If both EBL#1 and EBL#2 are displayed, EBL#1 and EBL#2 are selected back and forth by
holding down the [EBL1/EBL2] key.
The currently operable EBL#1/EBL#2 is shown with the EBL value reversed enclosed in
broken lines at the upper right of the screen.

2. Operating EBL#1/EBL#2 [EBL1/EBL2]

The EBL specified in 1 is operable.
After specifying the EBL you want to operate in 1, press [JOG DIAL] several times until the jog
dial mode display at the right bottom of the screen changes to "JOG EBL."

"JOG EBL.""JOG EBL."

"JOG EBL."
[JOG DIAL] enters the EBL operation mode.
In this status, the EBL can be turned.
Tur ning [JOG DIAL] clockwise turns the EBL "clockwise."

"clockwise.""clockwise."

"clockwise."

Tur ning [JOG DIAL] counterclockwise turns the EBL "counterclockwise."

"counterclockwise.""counterclockwise."

"counterclockwise."

3. Erasing EBL#1/EBL#2 [EBL]

If both EBL#1 and EBL#2 are displayed, press the [EBL] key to reverse the value of
EBL#1/EBL#2 you want to retain on the screen. In this status, pressing the [EBL1/EBL2] key
erases the non-reversed EBL.

52

If only EBL#1 or EBL#2 is displayed, press the [EBL] key to reverse the value of
EBL#1/EBL#2.
In this status, pressing the [EBL1/EBL2] key erases the non-reversed EBL.

4. Measuring the bearing from own ship using EBL#1 [EBL1/EBL2]

(a) Press the [EBL1/EBL2] key to reverse the value of EBL#1.
(b) In this status, turn [JOG DIAL] to adjust the line of EBL#1 to the target, and read the

value of EBL#1 to measure the bearing to the target.

5. Measuring the bearing from own ship using EBL#2 [EBL1/EBL2]

(a) Press the [EBL1/EBL2] key to reverse the value of EBL#2.
(b) In this status, turn [JOG DIAL] to adjust the line of EBL#2 to the target, and read the

value of EBL#2 to measure the bearing to the target.

In this case, the target is at a position of the relative bearing 45 degrees from the own ship.

6. Using EBL2 as a floating EBL

EBL2 can be used as a floating EBL (eccentric EBL).

Take the following steps to place EBL2 in floating EBL mode.

Take the following steps to place EBL2 in floating EBL mode.Take the following steps to place EBL2 in floating EBL mode.

Take the following steps to place EBL2 in floating EBL mode.
(a) Operate [TACK BALL] to determine the fulcrum of EBL2.
(b) Press the [MENU] key to display MENU .
(c) Select DISP OPTIONS and then FLOATING EBL pressing the [JOG DIAL] or

[ACQ/ENT] key after each selection.

(d) The menu below is displayed. Turn [JOG DIAL] to select ON , and then press the [JOG

DIAL] or [ACQ/ENT] key to determine the selection.

53

EBL BEARING TRUE

FROATING EBL OFF
OFF OFF

ON NM
VRM2 UNITS NM
WAYPOINT OFF
POSITION LL

LL-TD CONV>

DISP OPTIONS

As shown in the figure below, EBL2 moves to the cursor position. If VRM2 is displayed at the
same time, the center of VRM2 also moves to the fulcrum of EBL2.

With EBL2 being placed in floating EBL mode

7. Setting EBL display

EBL can select true bearing or relative bearing.
True bearing means that the EBL bearing viewed from the own ship indicates the absolute
bearing on the earth.
Relative bearing means that the EBL bearing viewed from the own ship indicates the relative
bearing between the own ship and EBL.

Caution

●●●● True bearing and relative bearing are switched for both EBL1 and EBL2.

Thus, they cannot be set for EBL1 and EBL2 separately.

If true bearing presentation is selected, the value of EBL is displayed following by "T." If
relative bearing presentation is selected, the value of EBL is displayed following by "R."

54

Take the following steps to switch between the relative bearing and true bearing of EBL:

Take the following steps to switch between the relative bearing and true bearing of EBL:Take the following steps to switch between the relative bearing and true bearing of EBL:

Take the following steps to switch between the relative bearing and true bearing of EBL:
(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then EBL BEARING pressing the [JOG DIAL] or

[ACQ/ENT] key after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select RELATIVE or TRUE , and

then press the [JOG DIAL] or [ACQ/ENT] key to determine the selection.

EBL BEARING TRUE
RELATIVE OFF

TRUE OFF
VRM1 UNITS NM
VRM2 UNITS NM
WAYPOINT OFF
POSITION LL

LL-TD CONV>

DISP OPTIONS

3.5.7 Changing the bearing presentation method of the PPI screen [AZI MODE]

The following three bearing presentation methods are available for the radar PPI screen:

(a) Relative bearing presentation (Head Up)

Relative bearing is presented with the heading just above (at 0˚ of bearing marker) the PPI
screen.
When the ship's heading changes, the bearing of the echo image on the PPI screen also
changes.
If bearing information cannot be received from a navigator such as a gyrocompass, this relative
bearing presentation is applied.
To place the screen in Head Up mode, press the [AZI MODE] key on the keyboard several times
until the display at the upper left of the screen changes to "HUP."

(b) True bearing presentation (North Up)

True bearing is presented with "North" as due north of the PPI screen.
Even if the ship's heading changes, the bearing of the echo image on the PPI screen does not
change.
(A device such as a gyrocompass is necessary for getting bearing information.)
To place the screen in North Up mode, press the [AZI MODE] key on the keyboard several
times until the display at the upper left of the screen changes to "NUP."

(c) Course Up [AZI MODE]

The ship's heading at time of setting Course Up mode is presented with right above (at 0˚ of
bearing marker) of the PPI screen.
When own ship's course changes after setting as Course Up mode, the bearing of the echo
image on the PPI screen does not change and the ship's heading marker turns by only the
change of the ship's heading.
When the course greatly changes, hold down the [AZI MODE] key to set the course again.
(Course up reset)

55

To place the screen in Course Up mode, press the [AZI MODE] key on the keyboard several
times until the display at the upper left of the screen changes to "CUP."

Caution

●●●● Course up reset is only available in Course Up mode.

Hold down the [AZI MODE] key except course reset mode, the mode is shifted to

gyro setting mode.

Display in North Up mode Display in Head Up mode Display in Course Up mode

●●●● The input of bearing information from the navigator is necessary for changing

the bearing presentation method of the PPI screen.

3.5.8 Changing the center of the PPI screen [OFFCENT]

A display in an arbitrary direction can be lengthened by moving the center (off center) of the PPI
screen.

1. Setting a position to which the center is moved

(a) Move the cursor to the position where you want to move the center of the screen.
(b) Press the [OFFCENT] key. The center of the PPI screen moves to the new position.

2. Canceling the position as the new center

(a) To return the center of the screen to the original, press the [OFFCENT] key again. The

center of the screen returns to the original.

56

Note

Even if the center of the PPI screen is moved, this radar does not erase the images on the PPI screen

including the display of trails and the likes.

You can observe the heading of another ship at any time by freely moving the center of PPI screen.

Caution

●●●● The center of the PPI screen can be moved by up to 90% of the maximum screen

radius. If the center is moved by the allowable maximum into the SHM

direction, the observable range of targets in the heading direction becomes too

small, which is dangerous.

The center of the screen should be moved into the SHM direction for short

observation such as confirmation of another ship's position.

3. Continuously moving the center

To continuously move the center of the PPI screen, operate [TRACK BALL] while pressing the
[OFFCENT] key. When deciding a position as the new center, release the [OFFCENT] key.

Moving of the center stops.

4. Canceling the position as the new center

To return the center of the screen to the original, press the [OFFCENT] key again. The center
of the screen returns to the original.

3.5.9 Using the trail display function [TRAILS]

Displaying radar trails

The heading of another ship can be confirmed by the trail length and direction. This feature
assists in avoiding ship collision.
Timing trail display, continuous trail display, or combination of timing trail display and
continuous trail display can be selected for the trail length of the radar.

- Timing trail display :

A value 30 to 59 seconds or 1 to 99 minutes can be set for the trail length.

- Continuous trail display :

The trail length is unlimited.

- Timing trail display + continuous trail display :

The trail length is set in combination of the two modes above.
Even while the trail display function is set to OFF, the trail storage function is always working.
Thus, you can display trail data through one-touch operation whenever you want to.

1. Setting the trail display function to ON/OFF [TRAILS]

(a) Press the [TRAILS] key. The display changes in the following sequence:
Display OFF → display ON (timing trail display) → display ON (continuous trail display)

→ display ON (timing trail display + continuous trail display) → display OFF.

57

2. Setting a trail interval [TRAILS]

(a) Hold down the [TRAILS] key to display the TRAILS menu.
(b) Operate [JOG DIAL] to select TRAIL INTERVAL , and then press the [JOG DIAL] or

[ACQ/ENT] key.

(c) The menu below is displayed. Turn [JOG DIAL] to set a value 30 to 59 seconds or 1 to 99

minutes, and then press the [JOG DIAL] or [ACQ/ENT] key to determine the setting.

TRAIL INTERVAL 6M TRAIL INTERVAL 6M

TRAIL REF LVL 8 6NM 8
TRAIL SUPRESS 0.0NM TRAIL SUPRESS 0.0NM
TRAIL CLEAR OFF TRAIL CLEAR OFF

RANGE TRAIL CLEAR RANGE TRAIL CLEAR

TRAILS TRAILS

Caution

●●●● Because wake time may err by the rotation speed of scanner unit or the setting

timing, surely use this as a standard.

3. Clearing stored trail data [TRAILS]

(a) Hold down the [TRAILS] key to display the TRAILS menu.
(b) Operate [JOG DIAL] to select TRAIL CLEAR , and then press the [JOG DIAL] or

[ACQ/ENT] key.

(c) Select ON , and then press the [JOG DIAL] or [ACQ/ENT] key to determine the selection.

TRAIL INTERVAL 6M TRAIL INTERVAL 6M
TRAIL REF LVL 8 TRAIL REF LVL 8

TRAIL SUPRESS 0.0NM TRAIL CLEAR 0.0NM

TRAIL CLEAR OFF OFF OFF

RANGE TRAIL CLEAR ON CLEAR

TRAILS TRAILS

(d) The ON selected above is automatically changed back to OFF when the stored trail

data has been cleared.

4. Setting a trail reference level (trail threshold) [TRAILS]

A trail reference level is used to determine whether to store trail data depending on the
strength of targets.
A level 0 to 15 can be set as a threshold.
When level 1 is set, the data of all the targets displayed on the PPI screen is stored/displayed.
As a higher level is set, the trail data of only stronger targets is stored/displayed.
Level 8 is usually set.
If sea clutters are strong and they are also stored/displayed, set a level higher than 8.
Conversely, if the trail data of weak targets is difficult to store/display, set a level lower than 8.

Take the following steps to set a trail reference level (trail threshold):

Take the following steps to set a trail reference level (trail threshold):Take the following steps to set a trail reference level (trail threshold):

Take the following steps to set a trail reference level (trail threshold):

58

(a) Hold down the [TRAILS] key to display the TRAILS menu.
(b) Operate [JOG DIAL] to select TRAIL REF LVL , and then press the [JOG DIAL] or

[ACQ/ENT] key.

(c) The menu below is displayed. Select the threshold (level) you want to set, and then press

the [JOG DIAL] or [ACQ/ENT] key to determine the selection.

TRAIL INTERVAL 6M

TRAIL REF LVL 8

8 0.0NM
TRAIL CLEAR OFF

RANGE TRAIL CLEAR

TRAILS

5. Setting a trail storage suppression distance [TRAILS]

The trail storage suppression distance is a function not to store the data of trails in a specified
distance from the own ship.
Use the function not to store the data of unnecessary trails due to wave splash when the own ship sails.
To turn OFF the storage suppression function, set "0" in the procedure below.

Take the following steps to set a trail storage suppression distance:

Take the following steps to set a trail storage suppression distance:Take the following steps to set a trail storage suppression distance:

Take the following steps to set a trail storage suppression distance:
(a) Hold down the [TRAILS] key to display the TRAILS menu.
(b) Operate [JOG DIAL] to select TRAIL SUPRESS , and then press the [JOG DIAL] or

[ACQ/ENT] key.

(c) The menu below is displayed. Turn [JOG DIAL] to set a distance from the own ship in

which you do not want to store trail data, and then press the [JOG DIAL] or [ACQ/ENT]
key to determine the setting.

TRAIL INTERVAL 6M
TRAIL REF LVL 8

TRAIL SUPRESS 0.0NM

0.0NM OFF
RANGE TRAIL CLEAR

TRAILS

6. Setting a range trail storage [TRAILS]

The range trail storage is a function not to clear the trail storage in temporarily observing a
range other than the present range at the time of the trail storage or the trail display.
Normal setting value is "CLEAR", and the trail is automatically cleared by switched the range.
The trail is not automatically cleared even if the range is switched, set "KEEP" in the
procedure below.

Take the following steps to set a range trail storage:

Take the following steps to set a range trail storage:Take the following steps to set a range trail storage:

Take the following steps to set a range trail storage:
(a) Hold down the [TRAILS] key to display the TRAILS menu.
(b) Operate [JOG DIAL] to select RANGE TRAIL , and then press the [JOG DIAL] or

[ACQ/ENT] key.

(c) The menu below is displayed. Turn [JOG DIAL] to select KEEP , and then press the

[JOG DIAL] or [ACQ/ENT] key to determine the selection.

59

TRAIL INTERVAL 6M
TRAIL REF LVL 8

RANGE TRAIL 0.0NM
CLEAR OFF

KEEP CLEAR

TRAILS

3.5.10 Using the target expansion function [MENU]

The image expansion function extends the images of echoes on the PPI screen into the angle
direction and distance direction.

Caution

●●●● When the image expansion function is used, the echoes of two targets that are

close to each other in the distance direction (ahead/behind) and angle direction

may turn into a single image on the PPI screen.

1. Setting the target expansion function

Take the following steps to set the target expansion function:
(a) Press the [MENU] key to display MENU .
(b) Select BASIC and then TGT EXPANSION pressing the [JOG DIAL] or [ACQ/ENT]

key after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select ON , and then press the [JOG

DIAL] or [ACQ/ENT] key to determine the selection.

2. Canceling the target expansion function

To cancel the target expansion function, take the above steps changing step (c) as follows:.
In step (c) above, select OFF , and then press the [JOG DIAL] or [ACQ/ENT] key to determine
the selection.

3.5.11 Changing the transmitter pulse length [GAIN/PL]

The transmitter pulse length can be changed in the range of 1.5, 3, or 6 nautical miles.
If a long pulse is selected, the images of echoes on the PPI screen are lengthened in the distance
direction. Conversely, if a short pulse is selected, the images are displayed reduced in size
(length).
Unlike the image expansion function, the above function displays the echoes when a pulse
becomes longer that have not been displayed previously.

Caution

●●●● When a longer pulse is selected, the echoes of two targets that are close to each

other in the distance direction (ahead/behind) may turn into a single image on

the PPI screen.

60

Changing the pulse length

(a) Press the [GAIN/PL] control during transmission. The pulse length display at the right

bottom of the screen changes. At the same time, the pulse length changes, and the size of
the echoes on the screen changes.

3.5.12 Using the zoom function [MENU]

The zoom function can double the size of the PPI screen on the basis of own ship position.

Caution

●●●● This function does not work when the 0.125 nautical mile range is used.

1. Setting the zoom function

Take the following steps to zoom the area:
(a) Press the [MENU] key to display MENU .
(b) Select BASIC and then ZOOM pressing the [JOG DIAL] or [ACQ/ENT] key after

each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select ON , and then press the [JOG

DIAL] or [ACQ/ENT] key to determine the selection.

INTERFERENCE IR1
TGT EXPANSION OFF
PROCESS OFF

ZOOM 3.0
OFF FULL

ON OFF

BASIC

●●●● The center of the PPI can be moved to a position of 90% of the observation

range.

(e) The area is doubled with own ship as the center.

2. Canceling the zoom function

In step (c) above, select OFF , and then press the [JOG DIAL] or [ACQ/ENT] key. The zoom
function is canceled and the screen returns to the normal display.

61

3.5.13 Highlighting a target by decreasing unnecessary noise (image processing)

[MENU]

Caution

●●●● Do not use this function to view the radar beacon, the START signal, or a target

moving at a high speed on the radar screen.

●●●● This function is used most suitably in TM mode.

When you use the function in RM mode, select N-UP or C-UP. Use of the

function with H-UP may cause images to be blurred.

1. Setting image processing [MENU]

There are three types of image processing, PROC1, PROC2, and PROC3.
PROC1: Select PROC1 when there is a target moving at a low speed.
The image of a relatively unstable target is highlighted and displayed in stable

state.
PROC1 is effective for suppressing irregular signals like sea clutters.
However, the image of a target moving at a high speed dims.
Use PROC1 in a range of 1.5 nautical miles or less as a rule of thumb.
PROC2: Select PROC2 to display images in more stable state than "PROC1" does.
PROC2 is effective particularly when there are many sea clutters.
Use PROC2 in a range of 3 nautical miles or more as a rule of thumb.
PROC3: Select PROC3 when a target is not displayed at the very limit of remote noise.
Use PROC3 in a range of 6 nautical miles or more as a rule of thumb.
Disadvantage of PROC3 is that the target may be more difficult to observe because

noise or the like also appears clearly.
PROC1+3: PROC1 is performed in a preset processing range (the processing range from own

ship), and PROC3 is performed outside the processing range (the processing range

or more).
Use PROC1+3 as navigation when you want to display a target at the very limit of

remote noise while performing PROC1 that makes it easy to observe other ships

influenced by sea clutters in short range.
PROC2+3: PROC2 is performed in a preset processing range (the processing range from own

ship), and PROC3 is performed outside the processing range (the processing range

or more).
Use PROC2+3 as navigation when you want to display a target at the very limit of

remote noise while performing PROC2 that makes it easier to observe other ships

influenced by sea clutters in short range than PROC1 does.

Take

Take Take

Take the following steps to set image processing:

the following steps to set image processing:the following steps to set image processing:

the following steps to set image processing:
(a) Press the [MENU] key to display MENU .
(b) Select BASIC and then PROCESS pressing the [JOG DIAL] or [ACQ/ENT] key after

each selection.

62

(c) The menu below is displayed. Turn [JOG DIAL] to select PROC1 , PROC2 , PROC3 ,

PROC1+3 , or PROC2+3 , and then press the [JOG DIAL] or [ACQ/ENT] key to
determine the selection.

PROCESS IR1
OFF OFF

PROC1 OFF
PROC2 3.0
PROC3 FULL
PROC1+3 OFF
PROC2+3

BASIC

2. Canceling image processing [MENU]

In step (c) above, select OFF to cancel the image processing function.

3. Setting an image processing range [MENU]

Take the following steps to select the processing range of PROC1+3 or PROC2+3:
(a) Press the [MENU] key to display MENU .
(b) Select BASIC and then PROC SW RANGE pressing the [JOG DIAL] or [ACQ/ENT]

key after each selection.

The menu below is displayed. Turn [JOG DIAL] to set the range you want, and then

press the [JOG DIAL] or [ACQ/ENT] key to determine the setting.

INTERFERENCE IR1
TGT EXPANSION OFF
PROCESS OFF

PROC SW RANGE 3.0

3.0NM FULL
ZOOM OFF

BASIC

63

3.5.14 Switching true/relative motion display [TM/RM]

The motion mode determines whether to display the moving of the own ship and another target in
relative motion or true motion.

1. Switching the motion mode

(a) Press the [TM/RM] key. The screen display and function changes in the following

sequence:

"RM"

"RM" "RM"

"RM" → "TM"

"TM" "TM"

"TM" → "CTM"

"CTM""CTM"

"CTM" → "RM"

"RM""RM"

"RM"

RM: Relative motion. This mode displays other targets in relative motion fixing the own

ship to the center.
Radar trails are displayed in relative motion.
TM: True motion. This mode displays the own ship and other targets in true motion on the

screen with the earth being fixed.
Radar trails are displayed in true motion.
CTM: True motion with own ship fixed. This mode displays other targets in relative motion

fixing the own ship to the center.
Radar trails are displayed in relative motion.

"True motion display TM"
The fixed position of own ship on the screen moves according to the ship speed and course. A
fixed target like a land target is fixed onto the screen, and an actually moving target moves on
the screen. The position of own ship is set to a position about 66% of the radius in the opposite
direction of the course on the extension of the ship's heading marker (SHM) when the true
motion display is enabled. The ship starts moving from the position according to the specified
own ship's speed and course.
After that, when the own ship reaches a position 66% of the radius in the opposite direction,
the own ship's position is automatically reset to the position at switching to the true motion
display.

True motion display

2. Resetting own ship's position in true motion display (TM)

Reset method :
Hold down the [TM/RM] key.

64

The own ship's position is reset to the position at switching to true motion display, and the own
ship starts moving from the position.

Allowable combinations of azimuth modes and motion modes

Available azimuth modes vary depending on the motion mode.

H-UP N-UP C-UP

RM ○ ○ ○

TM × ○ ○

CTM × ○ ○

Difference between TM and CTM

The CTM mode always displays TM-mode images with the own ship as the center.

TM CTM

Own ship display True motion Fixed to the center

Another ship display

True motion display Relative motion display

Image processing True motion True motion

Radar trails True motion display True motion display

Off-center 90% 90%

65

3.5.15 Suppressing the power consumption of the radar [MENU]

Use the intermittent transmitting function to suppress the power consumption.
The transmitting state and standby state are automatically switched while the intermittent
transmitting function is used.
The intermittent transmitting function can freely set the periods of the transmitting state and
standby state.

Period of the tran

Period of the tranPeriod of the tran

Period of the transmitting state

smitting state smitting state

smitting state →→→→ Set the number of times the antenna rotated.

Set the number of times the antenna rotated. Set the number of times the antenna rotated.

Set the number of times the antenna rotated.

Period of the standby state

Period of the standby state Period of the standby state

Period of the standby state →→→→ Set the time while the standby state is placed.

Set the time while the standby state is placed. Set the time while the standby state is placed.

Set the time while the standby state is placed.

1. Using the intermittent transmitting function [MENU]

Take the following steps to use the intermittent transmitting function:
(a) Press the [MENU] key to display MENU .
(b) Select TX PLAN and then TX PLAN pressing the [JOG DIAL] or [ACQ/ENT] key

after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select ON , and then press the [JOG

DIAL] or [ACQ/ENT] key to determine the selection.

TX PLAN OFF
OFF 10 SCAN

ON 3 MIN

TX PLAN

When the intermittent transmitting function is turned ON, the transmitting state is placed
only while the antenna rotates the preset number of times. Similarly, the standby state is
placed only during the set time.

2. Canceling the intermittent transmitting function [MENU]

In step (c) above, select OFF , and then press the [JOG DIAL] or [ACQ/ENT] key to determine
the selection.

Caution

●●●● Cancelling is possible only when it is under transmitting state. It is not possible

under standby state.

3. Setting the period of the transmitting state (the number of antenna rotations) [MENU]

Take the following steps to set the number of antenna rotations:
(a) Press the [MENU] key to display MENU .
(b) Select TX PLAN and then TX PERIOD pressing the [JOG DIAL] or [ACQ/ENT] key

after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to set the number of antenna rotations

for placing the transmitting state, and then press the [JOG DIAL] or [ACQ/ENT] key to
determine the setting.

66

TX PLAN OFF

TX PERIOD 10 SCAN

1～99 SCAN 3 MIN

TX PLAN

When the period of the transmitting state is set, the transmitting state is placed only while the
antenna rotates the set number of times and then automatically switched to the standby state.
After the standby state is placed for the set time, it is switched to the transmitting state again.
Likewise, the two states are switched back and forth repeatedly.

4. Setting the period of the standby state [MENU]

Take the following steps to set the period of the standby state:
(a) Press the [MENU] key to display MENU .
(b) Select TX PLAN and then STBY PERIOD pressing the [JOG DIAL] or [ACQ/ENT]

key after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to set the time for placing the standby

state, and then press the [JOG DIAL] or [ACQ/ENT] key to determine the setting.

TX PLAN OFF

STBY PERIOD 10 SCAN

1～99 MIN 3 MIN

TX PLAN

When the period of the standby state is set, the standby state is placed only for the set time
and then automatically switched to the transmitting state. After the transmitting state is
placed while the antenna rotates the set number times, it is switched to the standby state
again. Likewise, the two states are switched back and forth repeatedly.

67

3.5.16 Monitoring the heading of other ships (targets) [ALARM ACK]

A guard zone can be set for warning the invasion of other ships or targets.
There are two guard zone modes - one mode issues an alarm when a ship or target gets into the
specified guard zone, and the other mode issues an alarm when a ship or target gets out of the
specified guard zone.

Caution

●●●● The volume of the alarm is the same as the volume of the buzzer. Be careful

that if the volume of the buzzer is set too low, you may not recognize that an

alarm is issued.

●●●● The alarm does not always respond to all targets. Thus, the alarm should be

used simply as an auxiliary device, and the operator herself/himself should

monitor the heading of other ships and targets with her/his eyes and ears.

1. Using the radar alarm [ALARM ACK]

Take the following steps to use the alarm function:
(a) Hold down the [ALARM ACK] key to display the ALARM menu.
(b) Select ALARM and then ALARM ZONE pressing the [JOG DIAL] or [ACQ/ENT] key

after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select GUARD ZONE , and then

press the [JOG DIAL] or [ACQ/ENT] key to determine the selection.

ALARM ZONE
OFF

GUARD ZONE
ATA GUARD RING

ALARM

Note

Select ATA GUARD RING only when you use the optional MARPA function.

2. Canceling the radar alarm function

In step (c) above, select OFF , and then press the [JOG DIAL] or [ACQ/ENT] key to determine
the selection.

3. Creating a radar guard zone [ALARM ACK]

Take the following steps to create a radar guard zone for issuing a radar alarm:
(a) Hold down the [ALARM ACK] key to display the ALARM menu.
(b) Select ALARM , GUARD ZONE , and then SETTING pressing the [JOG DIAL] or

[ACQ/ENT] key after each selection.

(c) A line is displayed for setting a guard zone. Operate [TRACK BALL] to set the range and

the starting angle inside the guard zone, and then press the [JOG DIAL] or [ACQ/ENT]
key.

68

(d) Operate [TRACK BALL] to set the range outside the guard zone and the starting angle of

the guard zone, and then press the [JOG DIAL] or [ACQ/ENT] key.

(e) Operate [TRACK BALL] to set the ending angle of the guard zone, and then press the

[JOG DIAL] or [ACQ/ENT] key to determine the setting.

ALARM MODE IN
ALARM LEVEL 8

SETTING

GUARD ZONE

Caution

●●●● Radar guard zone modes

There are two guard zone modes (invade and leave) - the invade mode issues an

alarm when a ship or target gets into the specified guard zone, and the leave

mode issues an alarm when a ship or target gets out of the specified guard zone.

Note that the range specified as the radar guard zone is displayed only when the

radar is in transmitting state. It is not displayed when the radar is in standby

state.

4. Setting a radar guard zone [ALARM ACK]

Take the following steps to set the mode that issues an alarm when a target gets into the
specified radar guard zone or when a target gets out of the specified radar guard zone:
(a) Hold down the [ALARM ACK] key to display the ALARM menu.
(b) Select ALARM , GUARD ZONE , and then ALARM MODE pressing the [JOG

DIAL] or [ACQ/ENT] key after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select IN or OUT , and then press

the [JOG DIAL] or [ACQ/ENT] key to determine the selection.

ALARM MODE IN
IN 8

OUT

GUARD ZONE

5. Setting a radar guard zone detection level [ALARM ACK]

Take the following steps to set the detection level of a guard zone:
(a) Hold down the [ALARM ACK] key to display the ALARM menu.
(b) Select ALARM , GUARD ZONE , and then ALARM LEVEL pressing the [JOG

DIAL] or [ACQ/ENT] key after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to set an alarm level 0 to 15, and then

press the [JOG DIAL] or [ACQ/ENT] key to determine the setting.

ALARM MODE IN

ALARM LEVEL 8

8

GUARD ZONE

69

Caution

●●●● An alarm level 0 to 15 can be set as the volume of the alarm. As a lower value is

specified, the alarm responds to a weaker target.

Be careful that if a set alarm level is too high, the alarm may not work when it

should.

3.5.17 Resetting an alarm (stopping a warning) [ALARM ACK]

This section explains how to stop the alarm when an alarm is issued as a warning.

Stopping the alarm

Press [ALARM ACK] key.
The alarm stops.

3.5.18 Displaying parallel line cursors [MENU], [VRM], [EBL]

Parallel line cursors are displayed across the whole PPI display.
When parallel line cursors are displayed, VRM2 and EBL2 are used to set the turning angle and
the spacing of parallel line cursors.

Displaying parallel line cursors

Take the following steps to display parallel line cursors:
(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then PARALLEL LINE pressing the [JOG DIAL] or

[ACQ/ENT] key after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select ON , and then press the [JOG

DIAL] or [ACQ/ENT] key to determine the selection.

EBL BEARING TRUE
FROATING EBL OFF

PARALLEL LINE OFF
OFF NM

ON NM
WAYPOINT OFF
POSITION LL

LL-TD CONV>

DISP OPTIONS

The parallel line cursors turn in the direction in which EBL2 turns.
The spacing of parallel line cursors can be changed in the direction in which VRM2 turns.

70

Parallel line cursor display

<Changing the spacing of parallel line cursors>

The bearing and the spacing of parallel line cursors can be changed in EBL2 mode and VRM2
mode, respectively.

3.5.19 Using the MOB function [MOB]

MOB

MOBMOB

MOB is also called a falling-into-sea mark. If a person or object falls into the sea, press the
[MOB] key. The latitude and longitude of the position are stored and the MOB mark is displayed.
A straight line from the own ship to the mark is also displayed.
The numeric value display area displays the distance from the own ship to the MOB mark, the
bearing, and the latitude and longitude of the MOB mark.

1. Displaying the MOB mark

(a) Press the [MOB] key.
(b) The MOB mark is displayed at the own ship's position. The distance to the MOB mark,

the bearing, and the latitude and longitude of MOB mark position are displayed in the
numeric value display area.

2. Erasing the MOB mark

(a) Hold down the [MOB] key.
The MOB mark and numeric value display are erased.

71

Caution

●●●● The MOB mark is displayed only on condition that a navigator is connected and

latitude/longitude information is input.

The MOB function does not work unless latitude/longitude information is input.

3.5.20 Using the WAYPOINT function [MENU]

When the radar receives BWC or RMB from the navigator, it displays the distance to the
destination, the bearing, and the latitude and longitude of the destination in the numeric value
display area.

1. Displaying WAYPOINT

Take the following steps to display waypoint:
(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then WAYPOINT pressing the [JOG DIAL] or

[ACQ/ENT] key after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select ON , and then press the [JOG

DIAL] or [ACQ/ENT] key to determine the selection.

EBL BEARING TRUE
FROATING EBL OFF
PARALLEL LINE OFF
VRM1 UNITS NM
VRM2 UNITS NM

WAYPOINT OFF
OFF LL

ON

DISP OPTIONS

2. Erasing WAYPOINT

In step (c) above, select OFF , and then press the [JOG DIAL] or [ACQ/ENT] key to determine
the selection.

●●●● When WAYPOINT and MOB are operating simultaneously, it can change by

holding down the TGT DATA key.

72

3.5.21 Own ship display function [MENU]

When you display the own ship's position through the navigator, use this function to determine
whether to select the latitude/longitude display or the conventional time difference display
LORAN-C.

Switching own ship display

Take the following steps to switch own ship's position information to the latitude/longitude
display or the time difference display:
(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then POSITION pressing the [JOG DIAL] or [ACQ/ENT]

key after each selection.

(c) The menu below is displayed. Turn [JOG DIAL] to select LL for the latitude/longitude

display or TD for the time difference display of LORAN-C, and then press the [JOG
DIAL] or [ACQ/ENT] key to determine the selection.

EBL BEARING TRUE
FROATING EBL OFF
PARALLEL LINE OFF
VRM1 UNITS NM
VRM2 UNITS NM

POSITION OFF
LL LL

TD

DISP OPTIONS

3.5.22 Function to convert time difference display to latitude/longitude display

[MENU]

This function sets a value necessary when the own ship's position display is converted from the
conventional time difference display of LORAN-C to the latitude/longitude display.

Setting LORAN-C values

Take the following steps to set LORAN-C information for switching to the latitude/longitude
display:

1. Setting the LORAN chain (base station number)

(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then LL-TD CONV pressing the [JOG DIAL] or

[ACQ/ENT] key after each selection.
(c) Turn [JOG DIAL] to select LORAN-C GRI .
(d) The menu below is displayed. Turn [JOG DIAL] to select the chain you want, and then

press the [JOG DIAL] or [ACQ/ENT] key to determine the selection.

LORAN-C GRI 4900

4900 0
LORAN-C TD2 0
TD COR. TD1 0.0

TD COR. TD2 0.0

LL-TD CONV

73

2. Setting time difference (TD1 or TD2)

(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then LL-TD CONV pressing the [JOG DIAL] or

[ACQ/ENT] key after each selection.
(c) Turn [JOG DIAL] to select LORAN-C TD1 or LORAN-C TD2 .
(d) Turn [JOG DIAL] to set the value of TD1 or TD2, and then press the [JOG DIAL] or

[ACQ/ENT] key to determine the setting.

LORAN-C GRI 4900

LORAN-C TD1 0

00
TD COR. TD1 0.0

TD COR. TD2 0.0

LL-TD CONV

Setting TD1 (Select the item one case lower for TD2.)

3. Setting the correction value (of TD1 or TD2)

(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then LL-TD CONV pressing the [JOG DIAL] or

[ACQ/ENT] key after each selection.
(c) Turn [JOG DIAL] to select TD COR. TD1 or TD COR. TD2 .
(d) Turn [JOG DIAL] to set the correction value of TD1 or TD2, and then press the [JOG

DIAL] or [ACQ/ENT] key to determine the setting.

LORAN-C GRI 4900
LORAN-C TD1 0
LORAN-C TD2 0

TD COR. TD1 0.0

0.0 0.0

LL-TD CONV

Setting the correction value of TD1 (Select the item one case lower for TD2.)

3.5.23 Cursor/own-ship position output function [CSR POS]

This function outputs the infomation of the bearing and distance from the current own ship's
position to cursor position.
The above information is output from the processing unit J8.

Outputting the bearing and distance from the current own ship's position to cursor position.

Outputting the bearing and distance from the current own ship's position to cursor position.Outputting the bearing and distance from the current own ship's position to cursor position.

Outputting the bearing and distance from the current own ship's position to cursor position.
(a) Press the [CSR POS] key.
(b) The J8 outputs the cursor position data. (RSD)

Outputting the bearing and distance when the cursor is the own ship's position.

Outputting the bearing and distance when the cursor is the own ship's position.Outputting the bearing and distance when the cursor is the own ship's position.

Outputting the bearing and distance when the cursor is the own ship's position.
(Outputs "bearing = 0","distance = 0")

(Outputs "bearing = 0","distance = 0")(Outputs "bearing = 0","distance = 0")

(Outputs "bearing = 0","distance = 0")
(a) Hold down the [CSR POS] key.
(b) The J8 outputs the cursor position data. (RSD)