JRC JMA-3910-4, JMA-3910-6, JMA-3925-9, JMA-3925-6, JMA-3925-7 Instruction Manual

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PREFACE

Thank you very much for purchasing the JRC marine radar equipment, JMA-3910-4/6

and JMA-3925-6/7/9.

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 CRT 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.

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●

Before Operation

●

Pictorial Indication

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 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.

Examples of pictorial indication

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.

Warning label

There is a warning label on the top cover of the equipment.

Do not try to remove, break or modify the label.

WARNING

CAUTION

Disassembling

prohibited

Electric

shock

Disconnect

the power

plug

Instruction

Prohibition

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III

●

Cautions to be Used During Operation

●

WARNING

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 inspec-

tion, 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.

CAUTION

Use these radar only as assisting devices for navigation.

Also, the officer should make the final decision for maneu-

vering by himself.

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◆◆◆◆

PRECAUTIONS BEFORE OPERATION

◆◆◆◆

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.

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CAUTION

◆◆◆◆◆◆◆◆◆

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, close his mouth so that foaming mucus does not accumulate inside.

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✩ 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

Mouth-to-mouth respiration

Raise the victim’s head. Support his

forehead with one of your hand and his neck with the other hand. →q

When you tilt his head backward, the

victim, in most cases, opens his mouth to

the air. This makes mouth-to-mouth

respiration easy.

Cover his mouth as widely as possible

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

with your fingers to prevent air from leaking. → e

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.

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VII

CAUTION

✩ 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 5 times while the other person blows into his mouth once,

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.

q w

e r

Cardiac massage

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VIII

EQUIPMENT APPEARANCE

Scanner Type NKE-1055-4 (4 feet) Scanner Type NKE-1055-6 (6 feet)

Scanner Type NKE-1056-6 (6 feet) Scanner Type NKE-1056-7 (7 feet)

Display Unit Type NCD-3780

Scanner Type NKE-1056-9 (9 feet)

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CONTENTS

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

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

Cautions to be Used During Operation······················································ III

PRECAUTIONS BEFORE OPERATION ····················································· IV

Cautions for high voltage .......................................................................................................... IV

What to do in case of electric shock .......................................................................................... IV

FIRST AID TREATMENTS ············································································ V

✩ First-aid treatments ..................................................................................................................... V

✩ When pulse is beating but breathing has stopped ...................................................................... VI

✩ When both pulse and breathing have stopped .......................................................................... VII

EQUIPMENT APPEARANCE ···································································· VIII

GLOSSARY ································································································· XV

1. GENERAL AND EQUIPMENT COMPOSITION

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

1.1.1 Functions of This Equipment .......................................................................................... 1-1

1.2 Features ·····························································································1-2

1.3 Composition ······················································································1-3

1.4 Configuration ·····················································································1-4

1.5 General System Diagram ································································1-11

2. NAMES AND FUNCTIONS OF CONTROL PANEL CONTROLS AND MENU COMPOSITION

2.1 Names and Functions of Control Panel ··········································2-1

2.2 Menu Composition ··········································································2-11

2.2.1 Menu Selection .............................................................................................................. 2-11

2.2.2 Menu List ...................................................................................................................... 2-12

3. BASIC OPERATION

3.1 Flow of Operation ·············································································· 3-1

3.1.1 Turning Power on and Starting the System ..................................................................... 3-2

3.1.2 Tuning ............................................................................................................................. 3-3

3.1.3 Observation and Video Adjustment ................................................................................ 3-3

3.1.4 Data Acquisition and Measurement ................................................................................ 3-4

3.1.5 Ending Operation and Stopping the System .................................................................... 3-4

3.2 Preparation ························································································3-5

3.2.1 Tuning [TUNE] .............................................................................................................. 3-5

3.2.2 Adjusting Sensitivity [GAIN] ......................................................................................... 3-5

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3.2.3 Adjusting CRT Brilliance [BRILL] ................................................................................ 3-5

3.2.4 Suppressing Sea Clutter [SEA CLUTTER] .................................................................... 3-6

3.2.5 Suppressing Rain and Snow Clutter [RAIN CLUTTER] ............................................... 3-7

3.2.6 Adjusting Brilliance ........................................................................................................ 3-8

3.2.7 Selecting DAY ／ NIGHT Modes [DAY ／ NIGHT] .................................................... 3-9

3.2.8 Setting Color .................................................................................................................. 3-10

3.2.8.1 Background Color ........................................................................................3-11

3.2.8.2 Setting Radar Video and Trail Color ............................................................ 3-12

3.2.9 Rejecting Radar Interference ......................................................................................... 3-13

3.2.10 Adjusting Control Panel Brilliance [PANEL DIM] ······················································ 3-13

3.3 Basic Operation ···············································································3-14

3.3.1 Using Trackball to Move Cursor "+" ............................................................................ 3-14

3.3.2 Using EBL (Electronic Cursor) [EBL] .......................................................................... 3-14

3.3.3 Selecting Range Scales [RANGE] ................................................................................ 3-17

3.3.4 Selecting Pulse Width [PULSE WIDTH] ..................................................................... 3-17

3.3.5 Disabling Ship's Head Marker [SHM] .......................................................................... 3-17

3.3.6 Using Parallel Index Line .............................................................................................. 3-18

3.3.7 Selecting Presentation Mode [BEARING] .................................................................... 3-20

3.3.8 Selecting True Motion ／ Relative Motion Display Modes

[TM ／ RM] [TM RESET] ............................................................................................ 3-21

3.3.9 Changing Own Ship Display Position [OFF CENT] .................................................... 3-23

3.3.10 Displaying Other Ship's Trails [TRAIL] ······································································· 3-23

3.3.11 Displaying Fixed Range Ring [RANGE RINGS] ························································· 3-25

3.3.12 Displaying Variable Range Markers [VRM] ································································ 3-25

3.3.13 Using Alarm [ALARM] ································································································ 3-27

3.3.14 Resetting Alarm [ACK] ································································································· 3-29

3.3.15 Setting Alarm Sound Level ··························································································· 3-30

3.3.16 Enhancing Target ·········································································································· 3-31

3.3.17 Setting Cross Cursor Length and Fixing Cursor Position ············································· 3-33

3.3.18 Displaying Ship's Stern Marker ····················································································· 3-35

3.3.19 Setting Range Unit in KM ····························································································· 3-36

3.3.20 Displaying Video Processing Screen ············································································ 3-37

3.3.21 Zooming Display ··········································································································· 3-39

3.3.22 Selecting Display Mode [MODE] ················································································· 3-40

3.3.23 Using Electronic Plot (EPA) ························································································· 3-40

3.3.23.1 Plotting Target .............................................................................................. 3-40

3.3.23.2 Modifying Plot ............................................................................................. 3-41

3.3.23.3 Deleting Plot ................................................................................................. 3-41

3.3.23.4 Displaying Plot Numerical Data ................................................................... 3-42

3.3.23.5 Plot Symbol .................................................................................................. 3-43

3.3.23.6 Setting Vector Display ................................................................................. 3-44

3.3.23.7 Setting Vector Time ..................................................................................... 3-45

3.3.23.8 Displaying ／ Clearing Plot No. ................................................................... 3-46

3.3.23.9 Setting CPA ／ TCPA .................................................................................. 3-47

3.3.23.10 Turning Alarm Sound On ／ Off .................................................................. 3-49

3.3.23.11 Displaying ／ Clearing CPA Ring ................................................................ 3-50

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3.3.24 Displaying Date and Time ............................................................................................. 3-51

3.3.25 Displaying the Plain Radar Screen ................................................................................ 3-53

3.3.26 Setting Echo Power ....................................................................................................... 3-55

3.4 Using Function Key [FUNC] ···························································3-56

3.4.1 Overview ....................................................................................................................... 3-56

3.4.2 Operation Method .......................................................................................................... 3-56

3.4.3 Function Setting Items ................................................................................................... 3-57

3.4.4 Operation Outline of the Function Setting Items .......................................................... 3-58

3.5 Displaying the Chart ·······································································3-70

3.5.1 Displaying a C-MAP Marine Chart ............................................................................... 3-70

3.5.2 Displaying Shoreline ROM Card made by JRC ............................................................ 3-72

3.5.3 Displaying the ERC Card .............................................................................................. 3-73

3.5.4 Display the JRC Chart ................................................................................................... 3-74

3.5.5 Displaying the Contour of the Shoreline ROM Card by JRC ....................................... 3-75

3.6 Displaying Own Ship Track ····························································3-77

3.6.1 Changing Track Color [Combined Plotter] ................................................................... 3-77

3.6.2 Selecting Track Storing Interval .................................................................................... 3-77

3.6.3 Stopping Track Storing ................................................................................................. 3-79

3.6.4 Deleting Track by Color (Using the [COLOR] Control) .............................................. 3-81

3.6.5 Deleting Track by Color (Using Menu) ........................................................................ 3-83

3.6.6 Displaying or Hiding Track by Color ............................................................................ 3-85

4. MEASUREMENT

4.1 Measurement with Trackball ····························································4-1

4.2 Measurement with Fixed Range Ring ··············································4-2

4.3 Measurement with Electronic Cursor

and Variable Range Marker ······························································4-3

4.4 Measurement between Two Optional Points of Target ··················4-4

5. TRUE AND FALSE ECHOES ON DISPLAY

5.1 Radar Line-of-sight Range ·······························································5-1

5.2 Strength of Reflection from Target ··················································5-3

5.3 Sea Clutters ·······················································································5-3

5.4 False Echoes ·····················································································5-3

5.5 Display of Radar Transponder ·························································5-6

6. MAINTENANCE

6.1 Routine Maintenance ········································································6-1

6.1.1 Cleaning ........................................................................................................................... 6-1

6.2 Maintenance of Each Unit ·································································6-2

6.2.1 Scanner Unit NKE-1055 ／ 1056 .................................................................................... 6-2

6.2.2 Display Unit NCD-3780 .................................................................................................. 6-4

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7. COUNTERMEASURES FOR TROUBLE AND ADJUSTMENT

7.1 Function Check ·················································································7-1

7.1.1 Function Check ................................................................................................................ 7-1

7.1.2 Testing Functions with Menu .......................................................................................... 7-1

7.1.2.1 Memory Test .................................................................................................. 7-2

7.1.2.2 Key Switch Test ............................................................................................. 7-3

7.1.2.3 Sensor Test ..................................................................................................... 7-4

7.1.2.4 Line Test ......................................................................................................... 7-4

7.1.2.5 ROM Version ................................................................................................. 7-5

7.1.2.6 ARPA Status ................................................................................................... 7-6

7.1.2.7 Error Logging ................................................................................................. 7-6

7.1.2.8 Magnetron Current, Running and Transmission Time ................................... 7-7

7.2 Failure Check ·····················································································7-8

7.3 Troubleshooting ··············································································7-10

7.4 Replacement of Major Parts ···························································7-12

7.5 Adjustment and Setting ··································································7-17

7.5.1 NSK Unit Adjustment ................................................................................................... 7-17

7.5.2 Adjustment and Setting at Installation .......................................................................... 7-20

7.5.2.1 Adjusting Tuning .......................................................................................... 7-20

7.5.2.2 Adjusting Bearing ......................................................................................... 7-21

7.5.2.3 Adjusting Range ........................................................................................... 7-22

7.5.2.4 Setting Antenna Height ................................................................................ 7-23

7.5.3 Various Setting .............................................................................................................. 7-24

7.5.3.1 Setting Own Ship Course Equipment ........................................................... 7-24

7.5.3.2 Setting HDG SENSOR Adjustment ............................................................. 7-25

7.5.3.3 Setting Own Ship Speed Equipment ............................................................ 7-27

7.5.3.4 Setting Screen Mode .................................................................................... 7-28

7.5.3.5 Setting Fishing Boat ／ Merchant Ship Mode .............................................. 7-29

7.5.3.6 Setting True Bearing .................................................................................... 7-31

7.5.3.7 Setting Ship Speed ........................................................................................ 7-33

7.5.3.8 Setting Drift .................................................................................................. 7-34

7.5.3.9 Setting PRF ................................................................................................... 7-35

7.5.3.10 Setting Transmission Repetition Frequency ................................................. 7-36

7.5.3.11 Connecting Navigation Equipment .............................................................. 7-37

7.5.4 GPS Initial Setting ／ Receiving Status ........................................................................ 7-39

7.5.4.1 GPS Initial Setting ........................................................................................ 7-39

7.5.4.2 Checking GPS Receiving Status .................................................................. 7-43

7.5.5 Setting DGPS ／ Checking DGPS Receiving Status .................................................... 7-45

7.5.5.1 Setting DGPS ............................................................................................... 7-45

7.5.5.2 Checking DGPS Receiving Status ............................................................... 7-47

7.5.6 Maintenance Menu ........................................................................................................ 7-48

7.5.6.1 Serial Input Equipment ................................................................................. 7-48

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7.5.6.2 Antenna Switch ............................................................................................ 7-49

7.5.6.3 Partial Master Reset ...................................................................................... 7-49

7.5.6.4 Total Master Reset ........................................................................................ 7-49

7.5.6.5 Internal Setting to Card 2 .............................................................................7-50

7.5.6.6 Card 2 to Internal Setting .............................................................................7-51

7.5.6.7 User Memory ................................................................................................ 7-51

7.5.6.8 Restoring User Memory ............................................................................... 7-52

7.5.7 Adjusting Position to Chart ........................................................................................... 7-53

7.5.7.1 Adjusting Video and Chart Using Trackball (R+P Mode) ........................... 7-53

7.5.7.2 Adjusting Video and Chart Position by Entering Adjustment Value

(R+P and Plotter Modes) .............................................................................. 7-54

7.5.7.3 Adjusting Position by Changing Longitude ／ Latitude Information

from GPS (R+P and Plotter Modes) ............................................................. 7-55

7.5.7.4 Adjusting Position by Entering Latitude ／ Longitude on Own Ship .......... 7-56

7.5.8 Setting the Rectifier Unit (NBA-3308) ......................................................................... 7-57

8. AFTER-SALES SERVICE

9. DISPOSAL

9.1 Equipment Disposal ··········································································9-1

9.2 Disposal of Used Batteries ·······························································9-2

9.3 Disposal of Used Magnetron ···························································· 9-3

10. SPECIFICATION

10.1 General Specification

JMA-3910-4 ／ JMA-3910-6 ／ JMA-3925-6 ／ JMA-3925-7 ／ JMA-3925-9

······10-1

10.2 Scanner Unit NKE-1055-4 ／ 6 ························································10-2

10.3 Scanner Unit NKE-1056-6 ／ 7 ／ 9 ·················································10-3

10.4 Display Unit NCD-3780 ····································································10-4

10.5 Inputable Signal ···············································································10-7

10.6 Outputable Signal ············································································10-7

10.7 Standard Equipment Configuration ···············································10-8

10.8 Installing Clearance between Equipment ····································· 10-8

10.9 Others (Optional) ·············································································10-8

Page 16

XIV

APPENDIX

Attached Figures

Appendix 1 Radar System Circuit Code List Appendix 2 Circuit Diagram of Radar Type JMA-3910-4 ／ 6 and JMA-3925-6 ／ 7 ／ 9 Appendix 3 Terminal Board Connection Diagram of Radar Type JMA-3910-4 ／ 6 Appendix 4 Terminal Board Connection Diagram of Radar Type JMA-3925-6 ／ 7 ／ 9 Appendix 5 Primary Power Supply System Diagram of Radar Type JMA-3910-4 ／ 6

and JMA-3925-6 ／ 7 ／ 9

Appendix 6 Internal Connection Diagram of Scanner Unit Type NKE-1055

Appendix 7 Internal Connection Diagram of Scanner Unit Type NKE-1056

Appendix 8 Internal Connection Diagram of Display Unit Type NCD-3780

Appendix 9 Power Supply Connection Diagram of Display Unit Type NCD-3780

Appendix 10 NSK Log Selection Switches of Display Unit Type NCD-3780

Appendix 11 Setting Table of the Speed Log Select Switches of Display Unit Type NCD-3780

Appendix 12 Setting Table of the Gyro Compass and Gyro Select Switches of Display Unit Type

NCD-3780

Page 17

GLOSSARY

This section explains common maritime terms and the terms used for this equipment.

ARPA (Automatic Radar Plotting Aid) : Supporting equipment for automatically preventing clash.

ATA (Automatic Tracking Aid) : Supporting equipment for automatically preventing clash.

Fast Time Constant (FTC) : Rain and snow clutter suppression.

Sensitivity Time Control (STC) : Sea surface clutter suppression.

Bearing : Direction

COG : Course over Ground

CPA/TCPA : Closest point of approach and time to closest point of approach

limit as defined by the observer to give warning when a tracked

target or targets will close to within these limits from own

ship

CUP (Course-UP) : An azimuth stabilized display in which a line connecting the

centre of own ship with the top of the display is own ship's

intended course

EBL (Electric Bearing Line) : Electric bearing line centering the position of the own ship.

GPS (Global Positioning System) : Internationally-used positioning system.

Ground stabilization : A mode of display whereby own ship and all targets are

referenced to the ground using ground track or set and drift

inputs

Guard zone : A zone in which an alarm is given when a target is detected

Heading : The direction in which the bows of a ship are pointing

expressed as an angular displacement from north

HL : Heading Line

HUP (Head-UP) : Display mode in which the top of the screen corresponds to

the ship's head maker.

IMO : International Maritime Organization

IR : Interference Rejector

NM : Nautical Mile (1 nm = 1,852 m)

NSK : Gyro compass and log interface

NUP (North-UP) : An azimuth stabilized display in which a line connecting the

centre of own ship with the top of the display is north true

bearing

Own track : Automatic track display function.

Range ring : Fixed range ring.

RM (Relative Motion) : The combination of relative course and relative speed

RM display : A display on which the position of own ship remains fixed

and all targets move relative to own ship

Relative bearing : The direction of a target from own ship expressed as an angular

displacement from own ship's heading

Page 18

XVI

Relative course : The direction of motion of a target relative to own ship's

position expressed as an angular displacement from north. It

is deduced from a number of measurements of target range

and bearing on own ship's radar

Relative speed : The speed of a target relative to own ship's position. It is

deduced from a number of measurements of target range and

bearing on own ship's radar

Relative vector : The predicted movement of a target relative to own ship

Scan CORR : Target emphatic processing function.

Scanner : Antenna unit.

Sea stabilization : A mode of display whereby own ship and all targets are

referenced to the sea, using gyro heading and single axis log

water speed inputs

Target ENH : Target enhancing function.

TM (True Motion) : The combination of true course and true speed

TM display : A display across which own ship and each target moves with

its own true motion

VRM : Variable Range Marker

Trails : Tracks displayed by the radar echoes of targets in the form of

a synthetic afterglow. The trails may be either relative or true.

The true trails may be sea or ground stabilized

SOG : Speed over Ground

True bearing : The direction of a target from own ship or from another target

expressed as an angular displacement from north

True course : The true direction of motion of a target expressed as an angular

displacement from north. It is obtained by a vector

combination of target relative motion and own ship's true

motion

True speed : The speed of a target obtained by a vector combination of

target relative motion and own ship's true motion

True vector : The predicted true motion of a target as a result of own ship's

direction and speed input. The true vector may be either

displayed with reference to the water or to the ground

Performance monitor : Additional equipment for monitoring transmission power and

receiving sensitivity.

Floating EBL (Electric Bearing Line) : Electric bearing line centering a certain point.

Page 19

APPENDIX

NAMES AND FUNCTIONS OF CONTROL PANEL CONTROLS AND MENU COMPOSITION

GENERAL AND EQUIPMENT COMPOSITION

BASIC OPERATION

MEASUREMENT

TRUE AND FALSE ECHOES ON DISPLAY

MAINTENANCE

DISPOSAL

SPECIFICATION

COUNTERMEASURES FOR TROUBLE AND ADJUSTMENT

AFTER-SALES SERVICE

APPENDIX

Page 20

Page 21

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

1.2 Features ································································1-2

1.3 Composition ·························································1-3

1.4 Configuration ·······················································1-4

1.5 General System Diagram ··································1-11

GENERAL AND

EQUIPMENT

COMPOSITION

Page 22

1 – 1

This equipment is a high performance, high quality, highly reliable and totally-large-scale-integrated

(excluding special electronic tubes) radar composed of a scanner unit, a transceiver and a display unit with

a high resolution color CRT which adopts the raster scan method.

1.1.1 Functions of This Equipment

The major functions include target detecting color display, sea, rain or snow clutter restraint, sensitivity

adjustment, interference rejection, distance and bearing measurement using a trackball, fixed and variable

distance markers and an electronic cursor as well as an optional ARPA (manual and automatic target

acquisition and vector, tracking and warning display), a plotter (own ship tracking and coastal line display)

and an optional simple plotter (make and line display as well as target and course setting).

1.1 Functions

Page 23

1 – 2

Large, high resolution, easily visible diaplay

Thanks to the built-in high-precision (1024 × 768 pixels), non interlacing 15-inch color CRT, a radar

video area of more than 180 mm is available. High resolution, near range video images can also be

displayed.

Target detection using latest signal processing technology

Unnecessary clutter is eliminated from radar video signals received by the wide dynamic range receiver

using the latest digital signal processing technology, improving target detecting performance.

Three (radar, composite and optional plotter) mode display

● In the composite mode, radar video, coastal line and own ship tracks can all be displayed

simultaneously.

● In the plotter mode, marks and lines can be created and displayed as well as destination and

courses set using the optional plotter function.

Up to 20,000 points can be used for own ship tracks, marks, and so forth.

Easy-to-operate key arrangement

The basic radar functions can easily be operated since the system has only with the minumum number

of keys, enabling quick handling even in an emergency. Various other functions are also availabel

through easy key operation and screen menu selection.

Optional ARPA utilizing latest technologies

The acquiring and tracking functions of the ARPA have been improved by adopting the latest radar

signal processing and tracking technologies, achieving stable performance even when tracking objects

in a clutter.

● Up to 30 targets can be acquired and tracked.

● Hazard statuses are identified by sound displayed using colored symbols with different shapes.

● Fine display of other ship tracks (10 ships × 800 points each) and 7-color display.

Enhanced functions for day and night

The hues of all 4 screens (2 each for day and night) can be set, enabling screen colors to be reproduced

according to the operating environment through simple key operation. The screen are very easy to

see since echo videos and various graphics are differenctiated by color.

Multiple functions

● Radar trailing

● TM (True Motion) display

● Head-up, north-up, course-up and stabilized course-up display

● Own ship track display

● Guard alarm function

1.2 Features

Page 24

1 – 3

Spare parts and attachments

Item Code Qty. Remarks

Spare parts 6ZXRD00193 6 Display unit fuse MF60NR-10A

3 Display unit fuse MF60NR-0.5A

3 Display unit fuse MF61-TS7

12 Display unit NSK circuit fuse MF51NN-0.5A

3 Display unit monitor power supply circuit fuse

TSCUL1.5A

2 Scanner unit NKE-1055 carbon brush S00152-5C-70

2 Scanner unit NKE-1056 carbon brush 54511-03

Light blocking hood NPOL30250B 1

Canvas cover MPXP31358 1

Instruction manual 7ZPRD0518 1

1.3 Composition

Equipment componets

Remarks

Radar type Scanner unit Display unit

JMA-3910-4 10 kW

JMA-3910-6 10 kW

JMA-3925-6 25 kW

JMA-3925-7 25 kW

JMA-3925-9 25 kW

Trans-

mitting

output

Band

Inboard

power

supply

Ship's power supply

(when an optional

rectifier is used)

NKE-1055-4

(4ft slot antenna) × 1

NKE-1055-6

(6ft slot anttenna) × 1

NKE-1056-6

(6ft slot antenna) × 1

NKE-1056-7

(7ft slot antenna) × 1

NKE-1056-9

(9ft slot antenna) × 1

NCD-3780

× 1

NCD-3780

× 1

NCD-3780

× 1

NDC-3780

× 1

NDC-3780

× 1

X DC24V

AC200 ／ 220 ／ 230V,

50 ／ 60Hz, 1φ

AC100 ／ 110V,

50 ／ 60HZ, 1φ

Page 25

1 – 4

Outline Drawing of Scanner Unit Type NKE-1055-4 .................... Fig. 1.1

Outline Drawing of Scanner Unit Type NKE-1055-6 .................... Fig. 1.2

Outline Drawing of Scanner Unit Type NKE-1056-6 .................... Fig. 1.3

Outline Drawing of Scanner Unit Type NKE-1056-7 .................... Fig. 1.4

Outline Drawing of Scanner Unit Type NKE-1056-9 .................... Fig. 1.5

Outline Drawing of Display Unit Type NCD-3780 ........................ Fig. 1.6

1.4 Configuration

Page 26

1 – 5

1.4

Fig. 1.1 Outline Drawing of Scanner Unit Type NKE-1055-4

Page 27

1 – 6

1.4

Fig. 1.2 Outline Drawing of Scanner Unit Type NKE-1055-6

Page 28

1 – 7

1.4

Fig. 1.3 Outline Drawing of Scanner Unit Type NKE-1056-6

Page 29

1 – 8

1.4

Fig. 1.4 Outline Drawing of Scanner Unit Type NKE-1056-7

Page 30

1 – 9

1.4

Fig. 1.5 Outline Drawing of Scanner Unit Type NKE-1056-9

Page 31

1 – 10

1.4

Fig. 1.6 Outline Drawing of Display Unit Type NCD-3780

Page 32

1 – 11

General System Drawing of Radar Type JMA-3910-4 ................. Fig. 1.7

General System Drawing of Radar Type JMA-3910-6 ................. Fig. 1.8

General System Drawing of Radar Type JMA-3925-6 ................. Fig. 1.9

General System Drawing of Radar Type JMA-3925-7 ................. Fig. 1.10

General System Drawing of Radar Type JMA-3925-9 ................. Fig. 1.11

1.5 General System Diagram

Page 33

1 – 12

1.5

Fig. 1.7 General System Drawing of Radar Type JMA-3910-4

Page 34

1 – 13

1.5

Fig. 1.8 General System Drawing of Radar Type JMA-3910-6

Page 35

1 – 14

1.5

Fig. 1.9 General System Drawing of Radar Type JMA-3925-6

Page 36

1 – 15

1.5

Fig. 1.10 General System Drawing of Radar Type JMA-3925-7

Page 37

1 – 16

1.5

Fig. 1.11 General System Drawing of Radar Type JMA-3925-9

Page 38

Page 39

2.1 Names and Functions of Control Panel·············2-1

2.2 Menu Composition ············································2-11

NAMES AND FUNCTIONS

OF CONTROL PANEL

CONTROLS AND MENU

COMPOSITION

Page 40

2 – 1

CAUTION

Do not put anythig on the touch panel.

Deforming may occur if a hot object is placed on it.

Do not apply a strong shock to the touch panel, track ball, and controls, otherwise they

may get out of order.

2.1 Names and Functions of Control Panel

Page 41

2 – 2

2.1

Display Control Panel

SUB

MAIN MENU

RANGE RANGE

TUNE GAIN

BRILL COLOR

AUTO

RAINCLUTTER SEACLUTTER

AUTO

FUNC

ALARM

MODE

BEARING

SHM

DAY

NIGHT

OFF

CENT

TRAIL

EBL

POWER ON/OFF

OFF

VRM

TX

ST-BY

PANEL

DIM

ACK

1 2

2827

19 2321

1312 14

6 49 7

10 11

NUM

ENT

PULSE WIDTH

CANCEL TARGET

VECT

TRACK

CLR

OWN

TRACK

MARK

2345

67 890



RESET

TM RM

ACQ

DATA READ

FEBL

VECT−

DEST

VECT＋

3433323130

3938

363546

44434241404745



OFF



RANGE

RINGS

SLOT1



SLOT2

Page 42

2 – 3

2.1

Operation controls and keys

[SUB MENU] key

Displays the sub menu on the screen.

[MAIN MENU] key

Displays the main menu on the screen.

Trackball

Moves the cursor to a desired position.

r/t

[ ▽ ] and [△] keys

Select the range between 0.125 and 96/120 nautical mile.

[TUNE] control

Controls the target on the screen to be seen most clearly.

[GAIN] control

Controls the receiving sensitivity of the radar.

[RAIN CLUTTER] control

Decreases clutter videos due to rain or snow.

[SEA CLUTTER] control

Decreases clutter videos due to reflection from the sea surface.

[BRILL] control

Adjusts the brilliance of the display.

[COLOR] control

Sets the color for the own and other ship tracks, marks and lines.

(7 colors: white, sky, blue, green, yellow, pink and red)

[FUNC] key

Selects the pre-set video processing

[ALARM] key

Displays the menu for setting an alarm.

[MODE] key

Switches the system to the radar, composite or plotter mode.

[BEARING] key

Switches the screen to the true bearing, relative bearing, course-up or stabilized course-up mode.

[SHM] key

The SHM (Ship's Head Marker) can be cleared while this switch is being pressed.

[DAY ／ NIGHT] key

Switches the screen color and brilliance according to each setting.

Page 43

2 – 4

2.1

[OFF CENT] key

Moves the position of the own ship within the screen to display your desired direction wide (within

66% of the radius) or returns the ship to the center.

[RANGE RINGS] key

Turns the fixed range scale display on and off.

[TRAIL] key

Displays or deletes the radar trail.

[TX ／ ST-BY] switch

Selects between the transmission and standby modes.

[PANEL DIM]

Adjusts the character light brilliance of each switch and control on the control panel.

[ACK] switch

Stops alarm sound.

[VRM] key

Selects the display of variable range scale 1 or 2.

[OFF] switch

Selects turning on or off of the display of variable range scale 1 or 2.

Variable range scale control

Changes the variable range scale size.

When the parallel index lines is displayed, the parallel line interval is changed

[EBL] key

Selects the display of EBL1, EBL2 or the parallel index lines.

[OFF] switch

Selects turning on or off of the display of EBL1, EBL2 or the parallel index lines.

[EBL] control

Turns the bearing of EBL1, EBL2 or the parallel index lines.

[F EBL ／ ] (floating EBL) ／ (enlarge ／ reduce) key

"In the merchant ship mode"

Switches the EBL2 to the floating EBL.

"In the fishing ship mode"

Enhances or reduces the chart when the plotter mode is selected.

[TM RESET] key

Manually resets the own ship position in the true motion display mode.

[TM ／ RM] key

Switches the screen display to the true motion (TM), to the relative motion (RM), to the stabilized

relative motion (SRM) or to the true motion with constant own ship position (CTM).

Page 44

2 – 5

2.1

[DATA READ] key

Displays the target numerical values or sets or clears the target number using the electronic plot

(EPA) and ARPA (ATA).

[ACQ] switch

Manually acquires the target when the electronic plot (EPA) or ARPA (ATA) is used.

[ ] (originating point) key

Measures the distance between two points with the end point switch (in the radar mode).

Sets the simple course between two points with the end point switch (in the composite and plotter

modes).

[ ] (end point) key

Measures the distance between two points with the originating point switch (in the radar mode).

Sets the simple course between two points with the originating point switch (in the composite and

plotter modes).

[PULSE WIDTH] key

Switches the transmission pulse length (short, medium and long).

[VECT ／ TRACK] key

"In the merchant ship mode"

Switches the vector display between true and relative.

"In the fishing ship mode"

Opens a menu for setting the other ship track color, storing interval, memory clear, etc. when the

ARPA function is added.

[CANCEL TARGET] key

Cancels the target symbol and vector which are being tracked by the electronic plot (EPA) or ARPA

(ATA) and stops the tracking.

[ ] (reverse) key

Turns the cursor display on and off and fixes it.

Used for the numerical data display in the electronic plot (EPA) and ARPA (ATA).

[OWN TRACK] key

Enables the [COLOR] conrol to set the own ship track color.

Opens the menu for setting the own ship track storing interval, memory clear, etc.

[MARK] key

Enables the [COLOR] conrol to set the mark and line colors.

[VECT −／ DEST] key

In the merchant ship mode

Decreases the vector length when the electronic plot (EPA) or ARPA (ATA) is used.

In the fishing ship mode

Sets the destination and displays the distance to it in the form of numerical data.

Page 45

2 – 6

2.1

[VECT ＋／ ] (marker) key

In the merchant ship mode

Increases the vector length when the electronic plot (EPA) or ARPA (ATA) is used.

In the fishing ship mode

Puts a marker (MOB) at the position of the own ship to store it and displays the distance and bearing

to it and the arrival time.

[0 to 9] keys

Selects menu items and enters numerical data, etc.

Enters the event and cursor marks and lines when the plotter function is added.

[ENT] key

Selects menu items and enters numerical data.

[CLR] key

Clears the entry of numerical data and the target number in the electronic plot (EPA) and ARPA

(ATA), etc.

ROM ／ RAM card slot

The JRC ／ ERC chart ROM card is inserted here to display the chart.

The RAM card is inserted here to plays back the data stored inside.

[TUNE] key

Turns automatic tuning on and off.

[RAIN CLUTTER] key

Turns auto rain ／ snow reflection restraint on and off.

[SEA CLUTTER] key

Turns auto sea surface reflection restraint on and off.

[Power ON/OFF] switch

Turns the radar on and off.

Page 46

2 – 7

2.1

Contents Display (Standard Screen)

u i

o !0

!1 !2

!6 !5

Page 47

2 – 8

2.1

Range ／ range ring spacing

Standby ／ transmission (TX) display

→ 3.1.1 Turning Power on and Starting the System

Relative motion (RM) ／ true motion (TM) display

→ 3.3.8 Selecting True Motion ／ Relative Motion

Display Modes [TM ／ RM][TM RESET]

Bearing display → 3.3.7 Selecting Presentation Mode [BEARING]

Radar interference rejection → 3.2.9 Rejecting Radar Interference

Radar track (Trails) → 3.3.10 Displaying Other Ship's Trails [TRAIL]

Alarm display → 3.3.13 Using Alarm [ALARM]

Alarm enter ／ leave display → 3.3.13 Using Alarm [ALARM]

Cursor fixed display → 3.3.1 Using Trackball to Move Cursor "+"

Pulse width → 3.3.4 Selecting Pulse Width [PULSE WIDTH]

Tuning indicator → 3.1.2 Tuning

EBL1 ／ 2 (bearing) → 3.3.2 Using EBL (Electronic Cursor) [EBL]

VRM1 ／ 2 (range) → 3.3.12 Displaying Variable Range Markers [VRM]

Cursor bearing ／ range from own ship to cursor

→ 3.3.1 Using Trackball to Move Cursor "+"

Own ship course display

Own ship speed and log ／ ground speed

Page 48

2 – 9

2.1

Contents Display (Wide Screen)

u i

o !0

!1 !2

!6 !5

Page 49

2 – 10

2.1

Range ／ range ring spacing

Standby ／ transmission (TX) display

→ 3.1.1 Turning Power on and Starting the System

Relative motion (RM) ／ true motion (TM) display

→ 3.3.8 Selecting True Motion ／ Relative Motion

Display Modes [TM ／ RM][TM RESET]

Bearing display → 3.3.7 Selecting Presentation Mode [BEARING]

Radar interference rejection → 3.2.9 Rejecting Radar Interference

Radar track (Trails) → 3.3.10 Displaying Other Ship's Trails [TRAIL]

Alarm display → 3.3.13 Using Alarm [ALARM]

Alarm enter ／ leave display → 3.3.13 Using Alarm [ALARM]

Cursor fixed display → 3.3.1 Using Trackball to Move Cursor "+"

Pulse width → 3.3.4 Selecting Pulse Width [PULSE WIDTH]

Tuning indicator → 3.1.2 Tuning

EBL1 ／ 2 (bearing) → 3.3.2 Using EBL (Electronic Cursor) [EBL]

VRM1 ／ 2 (range) → 3.3.12 Displaying Variable Range Markers [VRM]

Cursor bearing ／ range from own ship to cursor

→ 3.3.1 Using Trackball to Move Cursor "+"

Own ship course display

Own ship speed and log ／ ground speed

Page 50

2 – 11

In addition to functions to be selected using keys on the front panel, this radar has some other functions

available on menus. To select these functions, press the numeric keys (

CLR

and

ENT

keys.

The menu are composed as follows:

MAIN

[MAIN MENU]

Pressing this key opens the main menu on the bottom of the screen and pressing again clears

it.

SUB

[SUB MENU]

Pressing this key opens the sub menu on the bottom of the screen and pressing again clears

it.

2.2.1 Menu Selection

(1) In order to select each item on the menu, press the numeric key corresponding to it.

(2) In order to change the contents in the item, press the same key used in (1) to select it and press the

ENT

key.

The underlined setting indicates the current one. The display is highlighted when selected. Pressing the

ENT

key confirms the setting.

(3) In order to change the numerical part in the item, press the same key used in (1), enter an appropriate

value using the numeric key and press the

ENT

. When numeral value input is enabled, the input part

is displayed in a box.

Note

● Press the

CLR

key to clear the input value.

When optional equipment (ARPA, plotter or performance monitor) is not installed, selecting its related

menu is invalid.

2.2 Menu Composition

Page 51

2 – 12

2.2

SUB

OWN

TRACK

ALARM

MAIN MENU

1. RADAR ／ TRAIL BRILL

2. RR ／ VRM／EBL BRILL

3. ARPA BRILL

4. GRAPHIC DATA BRILL

5. PROCESS

6. IR

7. FLOATING EBL

8. VECTOR

SUB MENU

1. RADAR #1 MENU

2. RADAR #2 MENU

3. RADAR #3 MENU

4. RADAR #4 MENU

5. ARPA #1-#2 MENU

6. PLOTTER MENU

7. ARPA TRACK MENU

9. INIT SETTING #1-#4 MENU

OWN TRACK

1. DELETE OWN TRACK

2. OWN TRK MEM INTERVAL

3. OWN TRACK MEMORY

4. TRACK MEM

5. NUM/VECTOR DISPLAY

6. WATER DEPTH MENU

7. WATER TEMP MENU

8. TIDEWAY MENU

RADAR ALARM MENU

1. FUNCTION

2. RADAR ALARM MODE

3. RADAR SECTOR ZONE

4. RADAR SENSITIVITY LEVEL

5. AUDIBLE WARING

6. ARPA SECTOR ZONE

(FISHING BOAT)

ARPA TRACK

1. TRACK FUNCTION

2. TRACK COLOR

4. TRK DISPLAY

5. TRK MEM INTERVAL

6. CLEAR TRACK COLOR

7. CLEAR TRACK NUMBER

8. CARD 2 TRACK DISP

VECT

TRACK

MAIN

2.2.2 Menu List

Page 52

2 – 13

2.2

RADAR #1

0. PREVIOUS MENU

1. TARGET EXPANSION

2. RADAR VIDEO MENU

3. RADAR TRAILS MENU

4. ZOOM

7. DISPLAY COLOR MENU

RADAR #2

0. PREVIOUS MENU

1. GYRO

2. EBL BEARING

3. PARALLEL INDEX LINE

5. CURSOR MENU

6. STERN FLASH

7. KM ／NM VRM1

8. KM ／NM VRM2

RADAR #3

0. PREVIOUS MENU

1. RADAR DISPLAY AREA

2. ECHO POWER

3. EPA MENU

4. XMIT REPETITION FREQUENCY

9. PERFORMANCE MONITOR

SUB

RADAR VIDEO

0. PREVIOUS MENU

1. VIDEO LATITUDE

2. VIDEO NOISE REJECTION

3. AUTO DR CONT

4. PROCESS SWITCHING

5. PROC SWITCH RANGE

RADAR TRAILS

0. PREVIOUS MENU

1. RADAR TRAILS INTERVAL

2. RADAR TRAILS REF LEVEL

3. RADAR TRAILS REDUCTION

4. RADAR TRAILS PROCESS

5. RADAR TRAILS SMOOTHING

DISPLAY COLOR

0. PREVIOUS MENU

1. RADAR AREA

2. OUTSIDE OF RADAR AREA

3. TARGET COLOR

4. RADAR TRAILS COLOR

CURSOR

0. PREVIOUS MENU

1. CURSOR LENGTH

2. FIXED CURSOR

EPA

0. PREVIOUS MENU

1. VECTOR TIME

2. PLOT NUMBER

3. LIMITS

4. AUDIBLE WARNING

5. DISPLAY OF CPA RING

SUB

Page 53

2 – 14

2.2

SUB

RADAR #4

0. PREVIOUS MENU

1. OWN TRK MEM INTERVAL

2. DELETE OWN TRACK

3. OWN TRACK MEMORY

4. DISP OWN TRACK COLOR

5. CLEAR OWN TRACK COLOR

6. C-MAP MENU

7. JRC／ERC CARD MENU

CONTOUR OF JRC CARD MENU

ARPA #1

0. PREVIOUS MENU

1. ARPA SYMBOL TARGET DATA

2. VECTOR TIME

3. PAST POSITION

4. PAST POSITION TIME

5. LIMITS CPA TCPA

6. AUDIBLE WARNING CPA ／ TCPA LOST TARGET

8. DISPLAY OF CPA RING

9. NEXT MENU

ARPA TRACK

0. PREVIOUS MENU

1. TRACK FUNCTION

2. TRACK COLOR

4. TRK DISPLAY

5. TRK MEM INTERVAL

6. CLEAR TRACK COLOR

7. CLEAR TRACK NUMBER

8. CARD 2 TRACK DISP

ARPA TEST

0. PREVIOUS MENU

1. TEST VIDEO

2. VECTOR CONST

3. VIDEO TD LEVEL

4. VIDEO HIGH LEVEL

5. VIDEO LOW LEVEL

6. GATE SIZE

7. ARPA NOISE LEVEL

8. ARPA FTC LEVEL

C-MAP MENU

0. PREVIOUS MENU

1. GRID DISPLAY

2. SOUNDING DISPLAY

3. SOUNDING DEPTH UNIT

4. LIGHT SECTOR DISPLAY

LIGHT SECTOR DISPLAY LEVEL

6. FILL LAND ARPA

JRC ／ ERC CARD

0. PREVIOUS MENU

1. FILL LAND AREA

2. ERC DISP REQUEST

CONTOUR OF JRC CARD

0. PREVIOUS MEMU

1. 10M

2. 20M

3. 30M

4. 40M

5. 50M

6. 60M

7. 70M

8. 80M

9. OTHER

ARPA #2

0. PREVIOUS MENU

1. ARPA TEST MENU

2. SIMULATION

SUB

Page 54

2 – 15

2.2

SUB

INIT SETTING #1

0. PREVIOUS MENU

1. COURSE EQUIPMENT

2. SPEED EQUIPMENT

3. MANUAL SPEED

4. FUNCTION MENU

5. BUZZER VOLUME

6. DRIFT SET DRIFT

7. GPS INITIALIZE MENU

8. SETTING DGPS ／ STATUS

9. NEXT MENU

DIAGNOSTIC MENU

0. PREVIOUS MENU

1. MEMORY TEST

2. KEY SWITCH TEST

3. SENSOR TEST

4. LINE TEST

5. ROM VERSION

6. ARPA STATUS

7. ERROR LOGGING

9. MAG. I. RUNNING TIME TX TIME

MAINTENANCE MENU

0. PREVIOUS MENU

1. ANTENNA HEIGHT

2. SERIAL INPUT DEVICE

3. ANTENNA SWITCH

4. PARTIAL MASTER RESET

5. ALL MASTER RESET

6. INTERNAL SETTING to CARD 2

7. CARD 2 to INTERNAL SETTING

8. MEMOLIZE USER SETTING

9. RESTORE USER SETTING

INIT SETTING #3

0. PREVIOUS MENU

1. SHIFT COAST LINE #1

2. SHIFT COAST LINE #2

3. LAT ／LON CORRECTION

4. CHART CENTER POSITION

5. DATA INPUT FORMAT

6. DATA／TIME

7. SHIP'S TYPE

9. NEXT MENU

INIT SETTING #4

0. PREVIOUS MENU

1. HDG SENSOR CORRECTION

2. CORRECT VALUE

SET FUNC

0. PREVIOUS MENU

1. FUNCTION 1 SETTING MENU

2. FUNCTION 2 SETTING MENU

3. FUNCTION 3 SETTING MENU

4. FUNCTION 4 SETTING MENU

INITIALIZE GPS ／ GPS STATUS

0. PREVIOUS MENU

1. POSITION N E

2. EXCLUSION SAT

3. GEODETIC

4. ANTENNAHEIGHT

5. FIX MODE

6. DOP LEVEL

7. POSN AVERAGE

8. SEND DATA

SETTING DGPS ／ DGPS STATUS

0. PREVIOUS MENU

1. MODE

2. FREQUENCY

3. BAUD RATE (BPS)

4. SET DATA

5. SEND DATA

INIT SETTING #2

0. PREVIOUS MENU

1. BEARING ADJUSTMENT

2. RANGE ADJUSTMENT

3. TUNE ADJUSTMENT

4. SETTING OF PRF

5. PM ADJUSTMENT

7. DIAGNOSTIC MENU

8. MAINTENANCE MENU

9. NEXT MENU

Page 55

2 – 16

2.2

FUNCTION x SETTING -1

0. PREVIOUS MENU

1. MODE

2. PROCESS

3. IR

4. AUTO STC/FTC

5. TGT EXPANSION

8. SAVE PRESENT STATE

9. NEXT MENU

FUNCTION x SETTING -4

0. PREVIOUS MENU

1. RADAR TRAILS INTERVAL

2. RADAR TRAILS REF LEVEL

3. RADAR TRAILS REDUCTION

4. RADAR TRAILS PROCESS

5. RADAR TRAILS SMOOTHING

9. NEXT MENU

FUNCTION x SETTING -3

0. PREVIOUS MENU

1. VIDEO LATITUDE

2. VIDEO NOISE REJECTION

3. GAIN OFFSET

XMIT REPETITION FREQUENCY

5. SMALL BUOY DETECTION

6. FISHING NET DETECTION

7. AUTO DR CONT

9. NEXT MENU

FUNCTION x SETTING -2

0. PREVIOUS MENU

1. PULSE WIDTH 0.75NM

2. PULSE WIDTH 1.5NM

3. PULSE WIDTH 3NM

4. PULSE WIDTH 6NM

5. PULSE WIDTH 12NM

6. PULSE WIDTH 16NM

9. NEXT MENU

FUNCTION x SETTING -5

0. PREVIOUS MENU

1. PROCESS SWITCHING

2. PROC SWITCH RANGE

6. INITIALIZE

Page 56

2 – 17

2.2

SUB

PLOTTER

0. PREVIOUS MENU

1. WPT ／ ROUTE #1 MENU

2. WPT ／ ROUTE #2 MENU

3. DISP ／ DEL OF TRK ／MARK

COLOR MENU

4. CLEAR MEMORY ／ INIT

CARD MENU

5. MEM CAPACITY ／ COPY

MEM MENU

9. PLOTTER SETTING MENU

WPT SKIP ／ BACK SKIP MENU

0. PREVIOUS MENU

1. WPT SKIP

2. WPT BACK SKIP

VECTOR ／ NUMBER DISPLAY

0. PREVIOUS MENU

1. SELECT LINE

2. OWN VECTOR LENGTH

3. WPT VECTOR

4. WPT ／ ROUTE DISPLAY

5. WPT NUMBER DISPLAY

6. RTE NUMBER DISPLAY

7. STATUS OF ORG ／DEST

8. SCALEBAR DISPLAY

WPT ／ ROUTE #1

0. PREVIOUS MENU

1. WAYPOINT ALARM

2. ROUTE ALARM

3. SETTING OF ROUTE SEQUENCE

4. SELECT SCHEDULED ROUTE

6. WAYPOINT ENTRY

7. WAYPOINT INPUT

WPT ／ ROUTE #2

0. PREVIOUS MENU

1. ROUTE SEQUENCE

2. WPT SWITCH MODE

WPT SKIP ／ BACK SKIP MENU

4. SETTING WPT ／ CANCELLATION WPT

DISPLAY ／ DELETE OF TRACK ／ MARK IN DISTINCTION COLOR

0. PREVIOUS MENU

1. DISP OWN TRK COLOR

2. DISP MARK COLOR／TYPE

3. CLEAR OWN TRK COLOR

4. CLEAR MARK COLOR／TYPE

CLEAR MEMORY ／ INITIALIZE CARD

0. PREVIOUS MENU

1. CLEAR MARK／LINE DATA

2. CLEAR WPT ／ROUTE DATA

3. FORMAT CARD 2

MEMORY CAPACITY ／ COPY MEMORY

0. PREVIOUS MENU

1. MEM CAPACITY

2. COPY INSIDE -> CARD2

3. COPY CARD2 -> INSIDE

4. COPY CARD1 -> CARD2

5. CLEAR FILE -> CARD2

6. CARD 2 OWN TRACK DISP

7. CARD 2 MARK DISP

8. SHOW CARD 1

9. SHOW CARD 2

PLOTTER SETTING

0. PREVIOUS MENU

1. SCALE

2. PRESET SCALE (JRC ／ERC CHART only)

3. VECTOR ／NUMBER DISPLAY MENU

Page 57

3.1 Flow of Operation ················································3-1

3.2 Preparation ···························································3-5

3.3 Basic Operation ·················································3-14

3.4 Using Function Key [FUNC]······························3-56

3.5 Displaying the Chart ··········································3-70

3.6 Displaying Own Ship Track ······························3-77

BASIC

OPERATION

Page 58

3 – 1

Basic operation is explained on the following pages.

Tuning

Data acquisition and measurement

Observation and video adjustment

Ending operation and stopping the system

Turning power on and starting the system

3.1 Flow of Operation

Page 59

3 – 2

3.1

3.1.1 Turning Power on and Starting the System

Procedures

1. Check that the ship's power is supplied to the system.

2. Press the power switch to turn the power on.

ON/OFF

POWER

The warm-up timer appears on the screen.

3. Press

ST-BY

Radar transmission starts and the scanner unit starts rotating.

"STBY" on the upper left of the screen changes to "TX".

Pressing the

ST-BY

key before "STBY" is displayed does not enable radar

transmission.

ATTENTION

Immediately after radar installation, after replacement of the magnetron or if the system has not been operated

for a long time, set the system to the standby mode and leave it as it is for 20 to 30 minutes before setting it

to the transmit mode.

Insufficient warming-up may cause sparks inside the magnetron and may make its oscillation unstable.

Start the transmitting mode with the short-pulse range and then go on to the long-pulse range. If the oscillation

becomes unstable during the period, immediately reset the system to the standby mode, leave it as it is for 5

to 10 minutes and restart the system. Repeat this until the system comes to oscillate stably.

Page 60

3 – 3

3.1

3.1.2 Tuning

Procedures

1. Press the

RANGE

key to select any range between 6 and 120

nautical miles.

Press the left

RANGE

key to decrease the range.

Press the right

RANGE

key to increase the range.

2. Turn the

TUNE

control.

Adjust the video for best presentation.

If radar display doesn't show a weak target, adjust the control until the turning bar on

the lower left of the screen indicates the maximum.

To use Auto Tuning mode

Procedures

1. Press the

TUNE

control.

Select auto tuning mode, "AUTO" appears on the right of the tuning bar.

Exit

2. Press the

TUNE

control again.

"AUTO" disapears on the right of the tuning bar, changes to manual mode.

3.1.3 Observation and Video Adjustment

Procedures

1. Press the

RANGE

key to select the range appropriate for

observation.

2. Turn the

GAIN

and

BRILL

controls so that the target is displayed

most clearly.

Page 61

3 – 4

3.1

3.1.4 Data Acquisition and Measurement

For details, see section “3.3 Basic Operation” and chapter “4 Measurement”.

3.1.5 Ending Operation and Stopping the System

To stop transmission

Procedures

Press the

ST-BY

key.

This stops radar transmission and scanner unit rotation. "TX" on the upper left of the

screen changes to "STBY".

Keep the system in the standby mode if it is expected to be reset to the transmit mode

soon. This enables the user to select the transmit mode again simply by pressing the

ST-BY

key.

To turn off

Procedures

Press the

ON/OFF

POWER

switch to turn the system off.

This stops the power to be supplied to the system.

Page 62

3 – 5

3.2.1 Tuning [TUNE]

TUNE

This control is used to tune the receiver.

When the tuning does not match, the receiving sensitivity decreases and the operator may miss weak or

distant targets.

For manual tuning, adjust the TUNE control so that the target is displayed most clearly. If radar display

doesn't show radar return, adjust the control until the tuning bar on the lower left of the screen indicates its

maximum right.

Since it takes about ten minutes for the oscillation frequency of the magnetron to stabilize after the transmit

mode has been set, adjust the control again 10 minutes later.

3.2.2 Adjusting Sensitivity [GAIN]

GAIN

This control is used to adjust the receiving sensitivity of the radar. Turning it clockwise increases the

sensitivity and expands the radar picture observation range. Excessive gain, however, increases receiver

noises on the screen and could make target detection more difficult.

When sighting targets densely located on the screen or targets near the own ship, turn the knob

counterclockwise to reduce the sensitivity. If gain is set too low, weak or distant targets could be missed.

3.2.3 Adjusting CRT Brilliance [BRILL]

BRILL

This control is used to adjust the brilliance of the total screen. Turning it clockwise increases the brilliance.

Adjust it to the best condition for you.

3.2 Preparation

Page 63

3 – 6

3.2

3.2.4 Suppressing Sea Clutter [SEA CLUTTER]

SEA CLUTTER

This control is used to suppress sea clutter. Although turning it clockwise increases the suppressing effect,

excessive suppressing could miss weak target at short range.

To use Auto Suppressing Sea Clutter mode

Procedures

1. Adjust the

SEA CLUTTER

so that the target is displayed most clearly.

2. Press the

SEA CLUTTER

control.

Select auto suppressing sea clutter mode, then "STC AUTO" appears on upper right of

the screen. Turn the control again when the target is not displayed most clearly.

Exit

3. Press the

SEA CLUTTER

control again.

"STC AUTO" disappears on the upper right of the screen, changes to manual mode.

Note

● Auto suppressing sea clutter mode can not select with auto suppressing rain and snow clutter mode.

Page 64

3 – 7

3.2

3.2.5 Suppressing Rain and Snow Clutter [RAIN CLUTTER]

RAIN CLUTTER

This control is used to suppress rain/snow clutter. Although turning it clockwise enables contours of targets

obscured by rain/snow clutter to be seen, excessive suppressing could miss weak targets. It is more effective

for suppressing sea clutter to use this control together with the [SEA CLUTTER] control.

Keep the knob at its leftist position for normal operation.

To use Auto Suppressing Rain and Snow Clutter mode

Procedures

1. Press the

RAIN CLUTTER

control.

Select auto suppressing rain and snow clutter mode, and "FTC AUTO" appears on the

upper right of the screen.

Turn the

RAIN CLUTTER

control when the target is not displayed most clearly.

Exit

2. Press the

RAIN CLUTTER

control again.

"FTC AUTO" disappears on the upper right of the screen, and changes to manual

mode.

Note

● Auto suppressing rain and snow clutter mode can not select with auto suppressing sea clutter mode.

Page 65

3 – 8

3.2

3.2.6 Adjusting Brilliance

Procedures

1. Press the

MAIN

key to open the main menu.

Brilliance increases in the four levels as shown below every time each setting key for adjusting brilliance is

pressed and pressing it again returns the system to the original status.

z [RADAR ／ TRACK BRILL]: Adjusts brilliance of radar video. x [RR ／ VRM ／ EBL BRILL]: Adjusts brilliance of the fixed range scale, variable range scales (VRMs1

and 2) and electronic cursors (EBLs1 and 2).

c [ARPA BRILL]: Adjusts brilliance of the ARPA symbol vector when the optional ARPA

is added.

It is used to adjust brilliance of the symbol vector of the electronic plot

(EPA) when the ARPA is not added.

v [GRAPHIC DATA BRILL]: Adjusts brilliance of the letters outside the fixed bearing range of the

cursor inside the fixed bearing range, of SHM, of the mark, line of the

own ship track, of the other ship track, and of the coast line.

Note

● The red and white marks, lines, and tracks change by "3. ARPA BRILL".

By brilliance adjustment of radar videos, only the gamma correction value changes and the maximum brilliance

remains unchanged. (The radar signal brilliance of a strong level remains unchanged and the radar signal

brilliance of a weak level changes.)

Main menu

MAIN MENU

Press an item number key.

1. RADAR ／ TRACK BRILL

● [DAY1]

2. RR ／ VRM ／ EBL BRILL

● [DAY1]

3. ARPA BRILL

● [DAY1]

4. GRAPHIC DATA BRILL

● [DAY1]

5. PROCESS

OFF PROC1 PROC2 PROC3

6. IR OFF

IR1 IR2 IR3

7. FLOATING EBL

OFF ON

8. VECTOR

TRUE RELATIVE

To close this menu, Press (MAIN MENU) key.

Brilliance, once adjusted, is stored depending on the selected day/night mode (refer to subsection “3.2.7 Selecting DAY ／ NIGHT Modes [DAY ／ NIGHT]”.)

Exit

2. Press the

MAIN

key.

Page 66

3 – 9

3.2

3.2.7 Selecting DAY ／ NIGHT Modes [DAY ／ NIGHT]

Procedures

Press the

DAY

NIGHT

key.

DAY

NIGHT

DAY

NIGHT

DAY

NIGHT

DAY

NIGHT

The brilliance set at the time of selecting each mode is stored. For adjusting brilliance, refer to subsection

“3.2.6 Adjusting Brilliance”.

Pressing this key changes the mode from "DAY1" to "DAY2",

"NIGHT1" to "NIGHT2" in this order.

Page 67

3 – 10

3.2

3.2.8 Setting Color

This control is used to set the background colors of inside and outside the bearing scale as well as radar and

trail video colors in each mode (four modes of DAY1, 2 and NIGHT1 and 2).

The following colors can be set.

Element Colors that can be set

BACKGROUND COLOR

Black, Blue

(within PPI)

BACKGROUND COLOR

Black, Sky blue

(outside of PPI)

TARGET COLOR Yellow, Green, Orange, Color (Red, Yellow, Green)

RADAR TRAILS COLOR Sky blue, White, Green

Screen display colors can be set and stored independently in each screen color arrangement mode.

Recommended setting

Reduce the brilliance other than radar videos during nighttime to reduce glare.

Daytime setting Nighttime setting

Brilliance of Maximum brilliance of Reduce the brilliance of

each element

each element (radar video = 2)

graphic and distance marker.

Background color Black or Blue (optional) Black

Radar video Yellow, Color Green, Orange

Page 68

3 – 11

3.2

3.2.8.1 Background Color

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the RADAR #1 menu.

3. Press the

key to open the DISPLAY COLOR menu.

4. Press the

key to select the background color inside the bearing

scale. (Radar area)

Two colors, including black, are available.

Press the

key to select the color for DAY1 and press the

ENT

key.

Press the

key again to select the color for DAY2 and press the

ENT

key.

Select the colors for NIGHT1 and 2 in the same way.

Press the

key to select the background color outside the bearing scale.

Two colors, including black, are available.

Press the

key to select the color for DAY1 and press the

ENT

key.

Press the

key again to select the color for DAY2 and press the

ENT

key.

Select the colors for NIGHT1 and 2 in the same way.

6. Press the

SUB

key.

Display color

DIAPLAY COLOR Press an item number key.

1. RADAR AREA DAY1: BLK BLU DAY2:

BLK BLU

NIGIHT1:

BLK BLU

NIGIHT2:

BLK BLU

2. OUTSIDE OF RADAR AREA DAY1: BLK

SKY

DAY2:

BLK SKY

NIGHT1: BLK

SKY

NIGHT2:

BLK SKY

3. TARGET COLOR DAY1:

YEL GRN ORN COLOR

DAY2:

YEL GRN ORN COLOR

NIGIHT1:

YEL GRN ORN COLOR

NIGIHT2:

YEL GRN ORN COLOR

4. RADAR TRAILS COLOR DAY1:

SKY WHT GRN

DAY2:

SKY WHT GRN

NIGHT1:

SKY WHT GRN

NIGHT2:

SKY WHT GRN

To close this menu, Press (SUB MENU) key.

Page 69

3 – 12

3.2

3.2.8.2 Setting Radar Video and Trail Color

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the RADAR #1 menu.

3. Press the

key to open the DISPLAY COLOR menu.

4. Press the

key to select "TARGET COLOR".

Four colors (yellow, green, orange and multi-color) are available.

Press the

key to select the color for DAY1 and press the

ENT

key.

Press the

key again to select the color for DAY2 and press the

ENT

key.

Select the colors for NIGHT1 and NIGHT2 in the same way.

5. Press the

key to select "RADAR TRAILS COLOR".

Three colors (sky, white and green) are available.

Press the

key to select the color for DAY1 and press the

ENT

key.

Press the

key again to select the color for DAY2 and press the

ENT

key.

Select the colors for NIGHT1 and NIGHT2 in the same way.

Exit

5. Press the

SUB

key.

Page 70

3 – 13

3.2

3.2.9 Rejecting Radar Interference

● If you'll watch the RADAR BECON and the SAFT, set the process as follows.

IR OFF

Procedures

1. Press the

MAIN

key to open the MAIN MENU.

2. Press the

key to select "IR".

3. Press the

key to select "OFF", "IR1", "IR2" or "IR3" according to

the radar interference status.

"IR1", "IR2" or "IR3" then appears on the upper right of the screen to display the

interference rejection circuit operation. "IR3" is most effective for the radar interference.

4. Press the

ENT

key.

Exit

5. Press the

MAIN

key.

Main menu

MAIN MENU

Press an item number key.

1. RADAR ／ TRACK BRILL

● [DAY1]

2. RR ／ VRM ／ EBL BRILL

● [DAY1]

3. ARPA BRILL

● [DAY1]

4. GRAPHIC DATA BRILL

● [DAY1]

5. PROCESS

OFF PROC1 PROC2 PROC3

6. IR OFF

IR1 IR2 IR3

7. FLOATING EBL

OFF ON

8. VECTOR

TRUE RELATIVE

To close this menu, Press (MAIN MENU) key.

3.2.10 Adjusting Control Panel Brilliance [PANEL DIM]

Procedures

Brilliance increases in the four levels every time the

PANEL

DIM

key is pressed

and pressing it again returns the system to the original status.

Attention

Page 71

3 – 14

3.3.1 Using Trackball to Move Cursor "+"

The cursor mark "+" is often used to designate positions in various operations. The cursor mark is interlocked

with motions of the trackball. When the trackball is turned vertically and horizontally, the cursor mark also

movers vertically and horizontally. The cursor readouts at the lower left of the screen read the distance and

the bearing of the cursor.

The operator is recommended to get accustomed to designate positions by using the trackball before operation.

Note

When the mode of fixed cursor is selected, the cursor is fixed in the direction of the axis selected on the

menu. (See subsection “3.3.17 Setting Cross Cursor Length and Fixing Cursor Position”.)

3.3.2 Using EBL (Electronic Cursor) [EBL]

The EBL (Electronic Cursor) is absolutely necessary to measure distance and bearing.

The operator is recommended to get accustomed to move the cursor before operation.

EBL

OFF

3.3 Basic Operation

● If you'll watch the RADAR BECON and the SART, set the process as follows.

IR OFF

PROCESS OFF

Attention

Page 72

3 – 15

3.3

Procedures

Displaying EBL

The EBL currently selected is displayed in a box on the lower left of the screen.

Pressing the [EBL] key once displays (selects) EBL1.

Pressing it again displays (selects) EBL2.

Clearing EBL

Pressing the [OFF] switch once clears the EBL outside a box on the lower

left of the screen.

Pressing it again clears the other EBL.

Display of Bearing readout of EBL

◎ Bearing readouts of EBL1 and EBL2 currently shown on the radar display are displayed on the lower left

of the screen.

Also, EBL1 or EBL2 currently activated is displayed in a box on the lower left of the screen.

Motion of EBL

◎ EBL1

• EBL1 is displayed as a line originating from own ship to outer edge of radar display.

• EBL1 rotates in the same direction as the EBL control.

◎ EBL2

• EBL2 is displayed as a line originating from own ship to outer edge of radar display.

• EBL2 rotates in the same direction as the EBL control.

EBL2 can be used as a floating EBL.

– Motion of Floating EBL –

• EBL2 is displayed as a line originating from the cursor mark "+" as it moves.

• The originating point moves in the same direction as the trackball.

• EBL2 rotates in the same direction as the EBL control.

• VRM2 on the EBL2 is displayed as a circle.

When EBL2 is changed to the parallel index line, VRM2 is not displayed.

Procedures

1. Press the

MAIN

key to open the MAIN MENU.

2. Press the

key to select "FLOATING EBL".

3. Press the

key to select "OFF" or "ON".

4. Press the

ENT

key.

Exit

5. Press the

MAIN

key.

EBL

OFF

Page 73

3 – 16

3.3

Setting EBL Display

Select EBL true and relative bearing display.

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the RADAR #2 menu.

3. Press the

key to select "EBL BEARING".

4. Press the

key to select "TRUE" or "RELATIVE" and press the

ENT

key.

Selecting "RELATIVE" displays "R" and selecting "TRUE" displays "T" in the EBL

bearing column on the lower left of the screen.

Exit

5. Press the

SUB

key.

Radar #2

RADAR #2

Press an item number key.

0. PREVIOUS MANU

1. GYRO 0.0°

2. EBL BEARING

TRUE RELATIVE

3. PARALLEL INDEX LINE

OFF ON

5. CURSOR MENU

6. STERN FLASH

OFF ON

7. KM ／ NM VRM1 KM

8. KM ／ NM VRM2 KM

To close this menu, Press (SUB MENU) key.

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3.3

3.3.3 Selecting Range Scales [RANGE]

Fixed range ring spacing (nm)

Range scale (nm)

The operator can select various range scale among 0.125, 0.25, 0.5, 0.75, 1.5, 3, 6, 12, 16, 24, 32, 48, 96 and

120 (nm). Press the

RANGE

key to decrease the range or the

RANGE

key to increase it. The current

range in use and the range ring spacing are seen in the upper left of the screen.

3.3.4 Selecting Pulse Width [PULSE WIDTH]

PULSE WIDTH

The operator can select three pulse widths ( SP (short pulse), MP (medium pulse) and

LP (long pulse) by pressing the

PULSE WIDTH

key when the range scale is any of 0.75, 1.5, 3, 6, 12 and 16nm. The

current pulse width is displayed like " MP" on the lower left of the screen. Using the short range

increases target resolution and decreases clutter returns. Using the long pulse increases target reception and

decreases clutter returns although target resolution also decreases.

3.3.5 Disabling Ship's Head Marker [SHM]

SHM

The ship's head marker (SHM) showing the course of the own ship is always displayed on the screen. While

the

SHM

key is pressed, the SHM disappears and targets in the direction of the bow can be observed

easily.

In the course-up display mode, pressing this switch returns the ship's head marker (SHM) to the top of the

screen.

◎ When the ship's stern marker (dotted line) is displayed on the screen, the marker also disappears while

this key is pressed.

RANGE RANGE

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3.3

3.3.6 Using Parallel Index Line

The parallel index line is displayed in half area of radar display.

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the RADAR #2 menu.

3. Press the

key to select "PARALLEL INDEX LINE".

4. Press the

key to select "ON" and press the

ENT

key.

The parallel lines appear on the screen (EBL2 changes to them).

Exit

5. Press the

SUB

key.

Cancellation

Press the

key in "PARALLEL INDEX LINE" (procedure 4) to select

"OFF" and press the

ENT

key.

The parallel lines disappear and change to EBL2.

Radar #2

RADAR #2

Press an item number key.

0. PREVIOUS MANU

1. GYRO 0.0°

2. EBL BEARING TRUE RELATIVE

3. PARALLEL INDEX LINE

OFF ON

5. CURSOR MENU

6. STERN FLASH

OFF ON

7. KM ／ NM VRM1 KM

8. KM ／ NM VRM2 KM

To close this menu, Press (SUB MENU) key.

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3.3

Motion of Parallel Index Line

◎ The parallel index line rotate in the same direction as the EBL control ( q and w ). ◎ The parallel index line interval can be changed by rotating the VRM control ( e and r ). ◎ The angle of the parallel index line is displayed in the EBL2 box on the lower left of the screen. ◎ The interval of the parallel index line is displayed in the VRM2 box on the lower left of the screen.

Display of parallel index line

➀

➂

➃

➁

➁➀

EBL

➃➂

VRM

◎ The bearing and interval of the parallel index line can be changed in the operation mode of EBL2 or

VRM2 respectively.

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3.3

3.3.7 Selecting Presentation Mode [BEARING]

This control switches presentation mode from [Head Up] to [Course Up], [North up] to [Stabilized Course

Up] every time the switch is pressed.

The current presentation mode is displayed as "HUP", "CUP", "NUP" or "SCUP" on the upper right of the

screen.

BEARINGBEARING

The presentation mode that can be used vary according to the motion mode. See subsection “3.3.8 Selecting True Motion／Rative Motion Display Modes [TM／RM] [TM RESET]”.

"HEAD UP"

The ship's head marker (SHM) is always pointed vertically to the top center of the radar display (0 degree on

the bearing scale). Since targets are displayed in the directions relative to the bow, the operator can sight

them on the radar display in the direction he really sees them.

When the own ship traverses, the surrounding targets are rotated at each scan.

"COURSE UP"

Selecting "COURSE UP" places the ship's head marker line (SHM) on 0 degree on the bearing scale. As in

the case of the NORTH UP, stationary targets remain stable on the radar display and the bearing of the SHM

changes as the own ship changes its course. After the own ship course is changed, the new course can be

updated by pressing the switch three more times to select the COURSE UP display or pressing the

SHM

key.

Surrounding targets will not ratate according to the traversing of the own ship.

"NORTH UP"

North is always at the top of the screen (0 degree on the bearing scale). The merits of this presentation mode

are as follows: Stationary targets remain stable and can be easily found on the chart, and their true bearings

can be read immediately.

Surrounding targets will not ratate according to the traversing of the own ship.

"STABILIZED COURSE UP"

The ship's head marker (SHM) is always fixed at the top of the screen (0 degree on the bearing scale) by

resetting it every rotation. During video processing, the fixed target is displayed stably and unnecessary

targets such as sea clutters decrease. This display is available only in the radar mode.

Surrounding targets will not ratate according to the traversing of the own ship.

North

North-up display

SHM

Head-up display

SHM

Stabilized course-up display

SHM

Course-up display

SHM

North

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3.3

3.3.8 Selecting True Motion ／ Relative Motion Display Modes [TM ／ RM] [TM RESET]

Outline of the Motion Mode

• The "Motion mode" determines in which motion of relative motion or true motion the moving of the

own ship and other targets are displayed.

• In "Motion mode", the mode is switched sequentially by pressing the

key.

• In TM/CTM mode, a composite display with plotter is possible, however, in RM/SRM, composite

display is not allowed.

RM : Relative motion. The own ship is fixed on the center and other targets are displayed

in relative motion.

A radar trail is relative motion display.

Video processing is performed in relative motion mode. (Video processing cannot

be used when H-UP is selected.)

SRM : Stabilized relative motion. The own ship is fixed on the center and other targets are

displayed in relative motion.

A radar trail is relative motion display.

Video processing is performed in true motion mode.

TM : True motion. The own ship and other targets are displayed in true motion mode on

the globe fixed screen.

Video processing is performed in true motion mode.

CTM : True Motion with Constant Own Ship Position. The own ship is fixed on the center

and other targets are displayed in relative motion mode.

A radar trail is true motion display.

Video processing is performed in true motion mode.

Note

●

For further information about video processing, see subsection “3.3.20 Displaying Video Processing Screen”.

The position of the own ship moves with true speed and course across the radar display area. Land masses

and other stationary targets do not move and only targets in motion move with true speed and course. When

this mode is selected, the own ship position will be offset to a position of about 65% of the radar display area

in the opposite direction of the course. The own ship will start moving from the position in accordance with

its speed and course. When the own ship arrives at a position of about 65% of the radar display radius on the

opposite side, the own ship will automatically be set to the position where it was when the true motion

display mode was selected.

Note

● True motion is not activated in the 96 and 120nm ranges.

SHM

Fixed on the screen

Moves as the own ship moves.

True Motion Display (TM Display)

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3.3

To reset own ship position in the true motion display (TM) mode

Press the

RESET

key.

The own ship is reset to the position where it was when the true motion mode was selected and will start

moving from the position.

Combinations of Presentation Mode and Motion Mode

• The presentation modes that can be used vary according to the motion mode.

H-UP N-UP C-UP SC-UP

RM ○○○×

SRM ○○○×

TM ×○○×

CTM ×○○○

Note

● In H-UP of RM, video processing cannot be used.

Differences Between RM and SRM

• The SRM mode was developed by improving the conventional RM mode to be able to perform

accurate video processing.

• When H-UP video processing is performed in the conventional RM mode, videos of other ships may

disappear. Since, in SRM mode, video processing is performed by true motion, accurate video

processing is performed and problems in the conventional mode do not occur.

RM SRM

Own ship display Fixed at the center Fixed at the center

Other ships display Relative motion display Relative motion display

Video processing Relative motion True motion

Radar trail Relative motion display Relative motion display

Off center Maximum 66% Not possible

Plotter composite display Not possible Not possible

Differences Between TM and CTM

• The CTM modes displays images in TM mode by constantly fixing the own ship at the center.

• Both the CTM and TM modes allow composite display with a plotter.

TM CTM

Own ship display True motion Fixed at the center

Other ships display True motion display Relative motion display

Video processing True motion True motion

Radar trail True motion display True motion display

Off center Maximum 66% Not possible

Plotter composite display Possible Possible

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3.3

3.3.9 Changing Own Ship Display Position [OFF CENT]

The

OFF

CENT

key is used to offset own ship in any direction up to 65% of the radar display radius. This

function is convenient when watching a direction in a wide range.

This function cannot be used in the range scale of 96 and 120nm.

Procedures

1. Move the cross cursor mark (own ship display position) to a desired

position using the trackball (it cannot be moved beyond about 65% of the

radar display radius from the center).

2. Press the

OFF

CENT

key.

3. The own ship position moves to the cross cursor mark and is fixed there.

SHM

Press the key.

OFF

CENT

Cancellation

Keep pressing the

OFF

CENT

key for a while.

The own ship returns to the center of the radar display area.

3.3.10 Displaying Other Ship's Trails [TRAIL]

Movements and speeds of other ships can be checked from lengths and directions of their trails as well as

synthetic afterglow, which helps avoid collisions of ships. Trail length can be changed over to eight levels

of 1min, 3min, 6min, 12min, 15min, 30min, 60min and continuous.

Procedures

1. Press the

TRAIL

key to display the radar trail.

The trail length currently set appears on the upper right of the screen.

Exit

2. Press the

TRAIL

key.

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3.3

To Change Radar Trail Interval

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the RADAR #1 menu.

3. Press the

key to open the RADAR TRAILS menu.

4. Press the

key to select "RADAR TRAILS INTERVAL".

5. Press the

key to select the trail interval and press the

ENT

key.

Exit

6. Press the

SUB

key.

RADAR TRAILS

Press an item number key.

0. PREVIOUS MENU

1. RADAR TRAILS INTERVAL 1MIN 3MIN 6MIN 10MIN

15MIN 30MIN 60MIN CONT

2. RADAR TRAILS REF LEVEL LEVEL1 LEVEL2 LEVEL3

LEVEL4

3. RADAR TRAILS REDUCTION

OFF LEVEL1 LEVEL2 LEVEL3

4. RADAR TRAILS PROCESS OFF

5. RADAR TRAILS SMOOTHING

OFF ON

To close this menu, Press (SUB MENU) key.

SHM

Trail

Other ship

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3.3

Motion of Radar Trail

◎ When the radar trail display is turned off, the memory for the trail which has been displayed is cleared. ◎ The radar trail memory is also cleared when the TM mode is automatically or manually reset, the range

is switched, or the off-center function is used.

◎ In the stabilized course-up display (SCUP) mode, the radar trail interval "CONT" functions as "12MIN".

Displaying thin or plain radar trails

The items from “2. RADAR TRAILS REF LEVEL” to “5. RADAR TRAILS SMOOTHING” are used to

display the thin or plain radar trails.

See the clauses [Page 4] in the section “3.4 Using Function Key [FUNC]”.

3.3.11 Displaying Fixed Range Ring [RANGE RINGS]

This key is used to display fixed range rings. The brilliance of range rings can be charged by subsection

“3.2.6 Adjusting Brilliance”.

Procedures

Press the

RANGE

RINGS

key.

A fixed range ring appears on the screen. The interval between rings is displayed on the

upper left of the screen.

Cancellation

Press the

RANGE

RINGS

key again.

The display of the fixed range ring is canceled.

3.3.12 Displaying Variable Range Markers [VRM]

The button is used to display and set variable range markers. Variable range markers are divided into two

types: variable range marker 1 which is displayed as a ring made up of long dashes and variable range

marker 2 which is displayed as a ring made up of short dashed on dotted line. When EBL2 is displayed,

VRM marks are also displayed on the EBL2.

VRM

OFF

EBL1

EBL2

VRM1

VRM2

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3.3

When EBL2 is used in the floating mode

EBL2

EBL1

VRM1

VRM2

Displaying VRM

The VRM currently selected is displayed in a box on the lower left

of the screen.

Pressing the [VRM] key once displays (selects) VRM1.

Pressing it again displays (selects) VRM2.

Clearing VRM

Pressing the [OFF] switch once clears the VRM outside a box on

the lower left of the screen.

Pressing it again clears the other VRM.

Bearing Display of VRM

◎ The numerical bearings of VRM1 and VRM2 currently displayed on the PPI is displayed on the lower

left of the screen. Also, VRM1 or VRM2 currently activated is displayed in a box above the range data.

Motion of VRM

◎ Variable range markers are displayed around the own ship. Turn the VRM control clockwise to increase

the scale or counterclockwise to decrease it.

VRM

OFF

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3.3

3.3.13 Using Alarm [ALARM]

Guard zones can be set in order to watch out entries of other ships or targets into the guard zones.

To set radar alarm function

Specify whether to use the function for outputting an alarm using the set guard zone or not.

Procedures

1. Press the

ALARM

key to open RADAR ALARM MENU.

2. Press the

key to select "FUNCTION".

3. Press the

key to select "OFF" or "RADAR ALARM".

4. Press the

ENT

key to confirm the setting.

Exit

5. Press the

ALARM

key.

Radar alarm menu

RADAR ALARM MENU

Press an item number key.

1. FUNCTION

OFF RADAR ALARM ARPA ALARM

2. RADAR ALARM MODE

IN OUT

3. RADAR SECTOR ZONE

4. RADAR SENSITIVITY LEVEL 1 2 34

5. AUDIBLE WARNING

RADAR ALARM OFF ON

ARPA ALARM OFF

6. ARPA SECTOR ZONE

(AUTO ACQ)

To close this menu, Press (ALARM) key.

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3.3

To set the radar alarm zone

Procedures

1. Press the

ALARM

key to open RADAR ALARM MENU.

2. Press the

key to select "RADAR SECTOR ZONE".

3. Pressing the

ENT

key clears the menu and displays the radar screen.

4. Turn the EBL and VRM controls to set the radar alarm range and press

the

ENT

key.

Use ELB1 to set the originating point of the angle, EBL2 to set the end point of the

angle or VRM1 to set the range.

Note

● The width of the radar alarm range is fixed.

● Do not use the floating EBL for EBL2 being set.

Motion for radar alarm set zone

◎ There are two modes, namely, "IN" mode in which an alarm goes off when a target enters the set circular

radar alarm zone and "OUT" mode in which an alarm goes off when a target goes out of the zone.

◎ The radar alarm set zone is displayed only in the radar transmission mode. Note that it is not displayed

in the standby mode.

To set the alarm mode

Specify whether to output an alarm when a target enters or goes out of the radar alarm set zone.

Procedures

1. Press the

ALARM

key to open RADAR ALARM MENU.

2. Press the

key to select "RADAR ALARM MODE".

3. Press the

key to select "IN" or "OUT".

4. Press the

ENT

key to confirm the setting.

Exit

5. Press the

ALARM

key.

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3.3

To set the alarm sound

Specify whether to output alarm sound in case of an alarm or not.

Procedures

1. Press the

ALARM

key to open RADAR ALARM MENU.

2. Press the

key to select "AUDIBLE WARNING".

3. Press the

key to select RADAR ALARM "OFF" or "ON".

4. Press the

ENT

key to confirm the setting.

Exit

5. Press the

ALARM

key.

To set the alarm detection level

Set the signal level for outputting an alarm.

Procedures

1. Press the

ALARM

key to open RADAR ALARM MENU.

2. Press the

key to select "RADAR SENSITIVITY LEVEL".

3. Press the

key to select the level between "1" and "4".

4. Press the

ENT

key to confirm the setting.

Exit

5. Press the

ALARM

key.

3.3.14 Resetting Alarm [ACK]

This function is used to stop alarm sound when an alarm sound occurs.

To stop alarm sound

Procedures

Press the

ACK

switch to stop alarm sound.

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3.3

3.3.15 Setting Alarm Sound Level

Alarm sound levels are set as follows:

To set alarm sound level

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the INIT SETTING #1 menu.

3. Press the

key to select "BUZZER VOLUME".

4. Press the

key to select "OFF", "LOW", "MIDDLE" or "HIGH".

Alarm volume can be set in 3 levels.

5. Press the

ENT

key to confirm the alarm volume.

Exit

6. Press the

SUB

key.

Init setting #1

INIT SETTING #1

Press an item number key.

0. PREVIOUS MENU

1. COURSE EQUIPMENT

GYRO HDG SENSOR

2. SPEED EQUIPMENT MANUAL

LOG GPS 2AXIS

3. MANUAL SPEED xx. x KT

4. FUNCTION MENU

5. BUZZER VOLUME OFF LOW MIDDLE

HIGH

6. DRIFT SET x .x°

DRIFT x. x KT

7. GPS INITIALIZE MENU

8. SETTING DGPS ／ STATUS

9. NEXT MENU

To close this menu, Press (SUB MENU) key.

Page 88

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3.3

3.3.16 Enhancing Target

• Expands a target to the display size.

• By expanding a target, the visibility of a small target is improved, thereby improving the sensitivity.

• However, if a target is expanded, the bearing and distance resolution deteriorate.

• The use of "EXP2" is recommended instead of "EXP1".

• The operation characteristics of the target expansion function are as follows.

OFF : The target expansion function is not used.

Use this mode when a high resolution is required.

EXP1 : Expands the target display size to the distance direction.

Expands also the bearing direction in the center of the screen.

Effective for searching small targets by using Video "PROC3".

Note that the screen may be filled with emphasized noise if Video "PROC2" is used

concurrently.

EXP2 : Expands the target display size to the vertical and horizontal directions.

Can be used regardless of the Video processing.

Use this mode when the sea clutter is strong.

EXP3 : Mode that sets "EXP1" and "EXP2" concurrently.

Use this mode for detecting small targets such as radio buoy.

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the RADAR #1 menu.

3. Press the

key to select "TARGET EXPANSION".

4. Press the

key to select "OFF", "EXP1", "EXP2" or "EXP3".

Pressing the key selects "EXP1" – "EXP3" and expands the targets on the PPI screen.

5. Press the

ENT

key to confirm the setting.

Exit

6. Press the

SUB

key.

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3.3

Radar #1

RADAR #1

Press an item number key.

0. PREVIOUS MENU

1. TARGET EXPANSION

OFF EXP1 EXP2 EXP3

2. RADAR VIDEO MENU

3. RADAR TRAILS MENU

4. ZOOM

OFF ON

7. DISPLAY COLOR MENU

To close this menu, Press (SUB MENU) key.

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3.3

3.3.17 Setting Cross Cursor Length and Fixing Cursor Position

This function is used to set the length of the cross cursor or to select the mode for fixing the cursor.

To set the length of the cross cursor

Procedures

1. Press the

SUB

to open the SUB MENU.

2. Press the

key to open the RADAR #2 menu.

3. Press the

key to open the CURSOR menu.

4. Press the

key to select "CURSOR LENGTH".

5. Press the

key to select "SHORT" or "LONG".

6. Press the

ENT

key to confirm the setting.

Exit

7. Press the

SUB

key.

Cross cursor

CURSOR

Press an item number key.

0. PREVIOUS MENU

1. CURSOR LENGTH

SHORT LONG

2. FIXED CURSOR

X/Y AXIS X AXIS Y AXIS

To close this menu, Press (SUB MENU) key.

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3.3

To set the cross cursor fixing mode

Procedures

1. Follow procedures 1 to 3 for setting the cursor length to open the CURSOR

menu.

2. Press the

key to select "FIXED CURSOR".

3. Press the

key to select "X/Y AXES", "X AXIS" or "Y AXIS".

4. Press the

ENT

key to confirm the setting.

Exit

5. Press the

SUB

key.

Motion of Fixed Cursor

◎ In order to fix the cursor, press the key.

Screen display

Pressing the key once fixes the cursor in the direction of the axis selected

on the menu.

Pressing it again clears the numerical display of the cursor position.

Pressing it again allows the cursor to move freely.

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3.3

3.3.18 Displaying Ship's Stern Marker

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the RADAR #2 menu.

3. Press the

key to select "STERN FLASH".

4. Press the

key to select "OFF" or "ON".

5. Press the

ENT

key to confirm the setting.

Exit

6. Press the

SUB

key.

Radar #2

RADAR #2

Press an item number key.

0. PREVIOUS MANU

1. GYRO 0.0°

2. EBL BEARING TRUE RELATIVE

3. PARALLEL INDEX LINE

OFF ON

5. CURSOR MENU

6. STERN FLASH

OFF ON

7. KM ／ NM VRM1 KM

8. KM ／ NM VRM2 KM

To close this menu, Press (SUB MENU) key.

Page 93

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3.3

3.3.19 Setting Range Unit in KM

This function is used to switch the range from the own ship to the cursor or the VRM 1/2 range unit to km or

nm.

The cursor is selected by VRM1.

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the RADAR #2 menu.

3. Press the

key to select "KM ／ NM VRM1".

In case of VRM2, press the

key to select "KM ／ NM VRM2".

4. Press the

key to select "KM" or "NM" on VRM1.

In case of VRM2, press the

key to select "KM" or "NM" on VRM2.

5. Press the

ENT

key to confirm the setting.

Exit

6. Press the

SUB

key

Radar #2

RADAR #2

Press an item number key.

0. PREVIOUS MANU

1. GYRO 0.0°

2. EBL BEARING TRUE RELATIVE

3. PARALLEL INDEX LINE

OFF ON

5. CURSOR MENU

6. STERN FLASH

OFF ON

7. KM ／ NM VRM1 KM

8. KM ／ NM VRM2 KM

To close this menu, Press (SUB MENU) key.

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3.3

3.3.20 Displaying Video Processing Screen

● If you'll watch the RADAR BECON and the SART, Set process as follows

PROCESS OFF

● If you'll use this function on RM mode, sellect NORTH-UP bearing or COURSE-UP bearing.

This function can't be used on RM mode selected HEAD-UP.

Unnecessary targets are reduced to enhance the intended target(s).

Procedures

1. Press the

MAIN

key to open the MAIN MENU.

2. Press the

switch to select "PROCESS".

3. Press the

switch to select "PROC1", "PROC2" or "PROC3".

Selecting "OFF" returns the video to the normal display.

4. Press the

ENT

key to confirm the setting.

Exit

5. Press the

MAIN

key.

Motion of Video Processing

• Video processing performs correlation processing for each scan.

• Video processing suppresses random undesired clutter and displays targets only.

• Accurate true bearing signals and speed signals are necessary.

• In SRM/TM/CTM mode, high processing precision can be achieved since processing is performed in

true motion.

• In RM mode, processing precision deteriorates due to the moving or traversing of own ship since

processing is performed in relative motion.

• When a target moves at a high speed and "PROC1" or "PROC2" is used, the image may be blurred or

disappear. In this case, set the processing to "OFF" or use "PROC3".

• Operation characteristics of "PROC1" to "PROC3" are as follows:

OFF : Does not perform correlation processing between scans.

At monitoring a near range such as within a bay, monitoring a target moving at a

high speed, or when a true bearing sensor is not connected.

PROC1 : Suppresses general undesired clutter and displays targets in natural gradation.

PROC2 : Suppresses random undesired clutter and displays a target by emphasizing it.

Use this processing for detecting small targets hidden by undesired clutter.

PROC3 : Displays unstable targets of low detection probability.

Use this processing when searching for small targets such as radio buoy in an area

free from sea clutter.

Attention

Page 95

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3.3

Main menu

MAIN MENU

Press an item number key.

1. RADAR ／ TRACK BRILL

● [DAY1]

2. RR ／ VRM ／ EBL BRILL

● [DAY1]

3. ARPA BRILL

● [DAY1]

4. GRAPHIC DATA BRILL

● [DAY1]

5. PROCESS

OFF PROC1 PROC2 PROC3

6. IR OFF

IR1 IR2 IR3

7. FLOATING EBL

OFF ON

8. VECTOR

TRUE RELATIVE

To close this menu, Press (MAIN MENU) key.

Page 96

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3.3

3.3.21 Zooming Display

This function is used to display the radar video in the double range scale. The available motion modes are

HUP, CUP and NUP only in the RM mode.

Procedures

1. Press the

SUB

key to open the SUB MENU.

2. Press the

key to open the RADAR #1 menu.

3. Press the

key to select "ZOOM".

4. Press the

key to select "OFF" or "ON".

5. Press the

ENT

key to confirm the setting.

6. Move the cross cursor mark (own ship display position) to your desired

position using the trackball (it cannot be moved beyond about 65% of the

radar display radius from the center).

7. Press the

ENT

key to zoom display.

Cancellation

8. Press the

RANGE

key.

Radar #1

RADAR #1

Press an item number key.

0. PREVIOUS MENU

1. TARGET EXPANSION

OFF EXP1 EXP2 EXP3

2. RADAR VIDEO MENU

3. RADAR TRAILS MENU

4. ZOOM

OFF ON

7. DISPLAY COLOR MENU

To close this menu, Press (SUB MENU) key.

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3.3

3.3.22 Selecting Display Mode [MODE]

This function is used to select the radar, R+P (radar + plotter) or plotter (optional) mode.

Procedures

Press the

MODE

key to select the radar, raddar + plotter or plotter mode.

The R+P (radar + plotter) mode cannot be selected unless both GPS and gyro are installed.

The available motion modes in R+P mode are NUP and CUP only in the TM/CTM mode.

The plotter mode cannot be selected unless the plotter is installed and transmission is

stopped.

3.3.23 Using Electronic Plot (EPA)

The EPA is used for a radar without the ARPA function.

It stores and displays the target course and speed in the form of vector.

Up to 10 ships (plot Nos. 0 to 9) can be specified.

It also calculates the CPA and TCPA and outputs an alarm.

The plotting memory is cleared when the power is turned off.

The previous plot is not displayed.

3.3.23.1 Plotting Target

A vector is displayed by plotting a target twice.

The plot moves according to the course and speed calculated from the two plotted positions.

The plot can be modified.

The plot No. is not displayed when the plot No. display function is turned off.

Procedures

1. Put the cross cursor mark on the target and press the

ACQ

switch to

start the first plotting.

2. Enter the plot No. using a numeric key (

3. Press the

ENT

key to complete the first plotting.

The acquisition symbol ( ) and the plot No. are displayed at the plotting

position.

Attention

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3.3

4. 30 seconds to 15 minutes after the first acquisition, put the cross cursor

mark at the position to which the target has been moved and start the

second plotting by following procedures 1 to 3 above. For the plot No.,

input the same one as the first plotting. After the second plotting is

completed, the symbol and plot No. displayed after the first plotting is

completed are cleared and a symbol (vector) and the plot No. are displayed

at the second plotting position.

5. The plot (symbol and plot No.) moves according to the fixed course and

speed calculated from the two plotting positions. In this status, the CPA

and TCPA at the moving position of the plot are calculated and an alarm

is output when the plot enters the alarm range.

3.3.23.2 Modifying Plot

This function is used to modify the specified plot.

Until the plot is cleared and reacquired, the plot immediately before moved to the position to be

cleared is displayed.

Procedures

1. Press the

DATA READ

key.

2. Enter the plot No. to be modified using a numeric key (

3. Press the

CLR

key.

At this time, the previously-updated status is displayed and "M", standing

for "modification", appears near the mark.

4. Put the cross cursor mark at the position to be modified for reacquisition.

At this time, specify the plot No. input in procedure 2.

ACQ

ENT

3.3.23.3 Deleting Plot

This function is used to delete the display of the specified plot.

The deleted plot cannot be reproduced.

Procedures

1. Press the

DATA READ

key to enable the plot No. to be entered.

2. Enter the plot No. using a numeric key (

3. Press the

CANCEL TARGET

key to delete the plot with the specified plot No.

Attention

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3.3

To delete all plots

Procedures

Keep pressing the

CANCEL TARGET

key more than 2 seconds.

3.3.23.4 Displaying Plot Numerical Data

The following data is displayed for the specified plot.

Plot No: Target No.

Elapsed time: In 0.1 minute

Target bearing: In 1 degree

Distance to target: In 0.01nm

Target true course: In 1 degree

Target true speed: In 0.1KT

CPA: In 0.01nm

TCPA: In 0.1 minute

The TCPA of the plot leaving from the own ship is displayed with "–".

Procedures

1. Press the

DATA READ

key to enable the plot No. to be entered.

2. Enter the plot No. using a numeric key (

3. Press the key to display the data of the specified plot.

The symbol of the target whose data is displayed turns to " ".

To delete data display

Procedures

1. Press the

DATA READ

key.

2. Press the key to delete the numerical data.

Note

● "U" is displayed near the mark of the target for which the plot has not been updated for more than 10

minutes and an alarm for requesting update goes off.

● The target which has not been updated for more that 15 minutes is automatically deleted.

Attention

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3.3

3.3.23.5 Plot Symbol

Meanings of Symbols

Vector/symbol Meanings Remarks

An alarm character (CPA ／ TCPA) appears.

An alarm sounds.

The vector and symbol blink in red.

Displayed from the first to teh second plotting.

The target symbol turns to after the

numerical data display is specified.

Displayed near the symbol whose plot is being

modified. The position of the previous plotting

is displayed.

Displayed for the plot which has not been

updated for 10 minutes. The plot is cleared 5

minutes after if not being updated (the target

which has not been updated for 15 minutes is

automatically cleared).

In this case, an alarm for requesting update goes

off.

Used for manually acquiring or clearing targets

and specifying them in the numeral display mode.

Safety target

Dangerous target

Initial acquisition mark

Target whose numerical data

is displayed.

Plot under modification

Plot update request

Trackball cursor mark

JRC JMA-3910-4, JMA-3910-6, JMA-3925-9, JMA-3925-6, JMA-3925-7 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual