Japan Radio Co NKE1125 Marine Radar User Manual JMA 9100 series RADAR Instruction Manual

Japan Radio Co Ltd. Marine Radar JMA 9100 series RADAR Instruction Manual

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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION

5－9

[2] Relative Vector Mode

The relative vector does not represent the true motion of the target, but its relative

relation with own ship. This means that a target with its relative vector directed to

own ship (passing through the CPA Limit ring) will be a dangerous target. In the

Relative Vector mode, it can be seen at a glance where the CPA Limit of the

dangerous target is.

Therefore, the True / Relative mode shall optionally be used for the purpose of

observation: the True vector mode for grasping the true aspect of a target, and the

Relative vector mode for grasping a target’s closest point of approach (CPA).

Fig 5-5: Relative Vector

5.1.3.3 Vector Length (Vector Time)

The vector length of a target is proportional to its speed, and the vector time can

be switched in a range of 1 to 60 minutes.

The diagram below illustrates a vector length of a target for 6 minutes, and the tip

of the vector represents the target's position expected to reach 6 minutes later.

Fig 5-6: Vector Length

Refer to Section 5.1.6 "Setting Vectors (Vector Time)".

The true vector is

not displayed

Relative vector

CPA ring

Current position

Future predicted position

(6 min later in this example)

5－10

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION

5.1.4 Cursor Modes (Cursor)

5.1.4.1 Types and Functions of Cursor Modes

The types of cursor modes are listed in the table below. To use the function of a

cursor mode, move the cursor onto the PPI object and left-click.

5.1.4.2 Change of Cursor Mode

Procedures

1) Left-click the Cursor button located at the upper right of the

display. Alternatively, on the PPI, right-click and select a desired

cursor mode from the list.

The selected cursor mode will be shown at the cursor mode (Upper right of the display on

page 2-4).

5.1.4.3 Operation of AUTO Mode

Mode Function

ACQ TT Enables the target tracking function to acquire a target in manual

mode.

ACT AIS Activates AIS targets, and sets a point filter.

TGT Data Displays the numeric data of a tracking target or AIS target.

CNCL TT Cancels a tracking target.

DEACT AIS Deactivates AIS target.

Data CNCL Hides the displayed numeric data of a tracked target or AIS target.

Mark Puts a temporary mark.

Property Displays the information of tracked targets, AIS targets, and marks.

AUTO Changes operation in accordance with the object at the cursor

position.

If the function of a selected cursor mode is not used for one

minute or more, the cursor mode is automatically changed to

AUTO .

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION

5－11

As shown below, the AUTO mode performs operation in accordance with the

object at the cursor position when left-clicked.

The AUTO mode permits to access that you want by intuitive operation.

Object at Cursor Position Operation

None Acquires a target.

EBL EBL operation.

VRM VRM operation.

Intersection point of EBL

and VRM

Performs EBL operation and VRM operation at

the same time.

Parallel index line Operates the parallel index line.

Tracked target Displays the numeric data of the tracked target.

Tracked target with

numeric data displayed

Hides the numeric data.

Sleeping AIS target Activates the AIS target.

Activated AIS target Displays the AIS target information.

AIS target with numeric

data displayed

Hides the AIS target information.

Automatic acquisition /

activation zone

Operates the automatic acquisition / activation

zone.

AIS filter Operates the AIS filter zone.

5－12

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION

5.1.5 Setting Collision Decision Criteria

5.1.5.1 Input of CPA Limit

Procedures

1) Left-click the CPA limit setting button in the Target Information

located at the upper right of the display.

The CPA Limit value input screen will appear.

2) Enter the value to be set as a CPA limit.

For inputs to the value input screen, refer to Section 3.3.4 "Operation on Numeric Value,

Latitude / Longitude and Character Input menu".

5.1.5.2 Input of TCPA Limit

Procedures

1) Left-click the TCPA limit setting button in the Target Information

located at the upper right of the display.

The TCPA Limit value input screen will appear.

2) Enter the value to be set as a TCPA limit.

For inputs to the value input screen, refer to Section 3.3.4 "Operation on Numeric Value,

Latitude / Longitude and Character Input menu".

5.1.5.3 Setting CPA Ring (CPA Ring)

While the distance of the specified CPA Limit value is used as the radius, the CPA

ring is displayed with a red circle.

Procedures

1) Left-click the CPA Ring button located at the lower right of the

display.

The CPA ring will be displayed.

• Set the optimum values of collision decision

conditions, depending upon vessel type, water area,

weather and oceanographic conditions. (For the

relations between those conditions and alarms, refer

to Section 5.5 "ALARM DISPLAY". )

NOTE:

The CPA ring is not displayed when the true vector mode is

selected.

Attention

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION

5－13

5.1.6 Setting Vectors (Vector Time)

Vector time can be set in minutes in the range 1 to 60 min.

A true vector mode or relative vector mode can be selected.

5.1.6.1 Setting vector time on the display (Vector)

Procedures

1) Left-click the target vector time setting button in the Target

Information located at the lower right of the display.

The Vector Time value input screen will appear.

2) Enter the value to be set as vector time.

For inputs to the value input screen, refer to Section 3.3.4 "Operation on Numeric Value,

Latitude / Longitude and Character Input menu".

5.1.6.2 Setting vector mode [T/R VECT]

Procedures

1) Press the [T/R VECT] key.

The current vector mode (true vector) or (relative vector) will be displayed in the

target vector display true / relative switching in Target Information located at the upper right

of the display.

5.1.7 Setting the GPS antenna location

Set the GPS antenna location. Set offset ranges in longitudinal direction and

latitudinal direction from the own ship's reference position.

For the setting procedure, refer to Section 7.1.9 "Setting of CCRP (CCRP

Setting)".

• If offset ranges are not set correctly, AIS symbols

and radar echoes may be displayed shifted.

• When offset ranges are set, latitude and longitude

data received from the GPS is offset, and the offset

data is displayed as the latitude and longitude of

own ship’s position.

Attention

5－14

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5.2 TARGET TRACKING OPERATION

This section explains how to use the target tracking function.

The target tracking function automatically tracks a target, and displays the target's

course and speed as vectors. The target tracking function calculates CPA and

TCPA, and issues an alarm as needed.

The tracking data is erased from memory when the power is turned off or during

transmission standby.

5.2.1 Acquiring Target [ACQ]

Target acquisition can be performed on two modes, Automatic and Manual, and

both modes can be used at the same time.

5.2.1.1 Automatic acquisition

[1] Turning On / Off the automatic acquisition and AIS activation (AZ Menu)

Procedures

1) Open the AZ menu by following menu operations.

The AZ Menu will appear.

2) Left-click the item button of or .

The acquisition / activation zone 1 (AZ1) or acquisition / activation zone 2 (AZ2) will be set

to on or off.

NOTE:

If the number of targets being tracked has reached the

allowable maximum and other targets (not being tracked) go

into the acquisition/activation zone, automatically acquired

targets are canceled in ascending order of danger.

The position of the scanner shall be at the centre of the azimuth

or range in the acquisition/activation zone.

:The acquisition / activation zone is turned on. The mark

and target ID number are put to an acquired target and

move with the target. The vectors are displayed within 1

minute. AIS targets are activated.

:The acquisition/activation zone is turned off. The

acquisition/activation zone will disappear from the radar

display, but the system continues to track the acquired

target. The activated AIS targets remain activate.

1. AZ1 2. AZ2

Off

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5－15

[2] Creating the automatic acquisition and AIS activation Zone (Make AZ)

Procedures

1) Open the AZ menu by following menu operations.

=捕捉・活性化メニュー (AZ Menu)が開きます。

2) Left-click the item button of or .

The range setting of the acquisition / activation zone 1 (AZ1) or acquisition / activation zone

2 (AZ2) will be started.

3) Set the starting azimuth and range by turning the [EBL] dial and

[VRM] dial, and left-click.

4) Set the ending azimuth and range by turning the [EBL] dial and

[VRM] dial, and left-click.

The acquisition / activation zone will be determined.

5.2.1.2 Manual Acquisition [ACQ MANUAL]

Procedures

1) Move the cursor onto the target to be acquired, and press the

[ACQ MANUAL] key.

The target will be acquired and the initial acquisition symbol will be displayed.

The vector will be displayed within one minute.

To perform operation only in the manual acquisition mode without automatic acquisition/

activation, turn off the automatic acquisition/activation function.

NOTE:

If more targets are acquired manually in the condition that the

maximum number of targets are under tracking, the targets

cannot acquired.

3. Make AZ1

4. Make AZ2

Target manually acquired .

The initial acquisition symbol is displayed .

Target that has passed for 1 min.

The acquisition symbol and vector are displayed .

5－16

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

[1] Use of Automatic and Manual Acquisition Modes

Use the manual acquisition mode while the automatic acquisition mode is on.

Manually acquire the target to which particular attention should be paid, and get

the other targets automatically acquired. If a new target appears exceeding the

maximum number of targets, the manually acquired target is displayed even in the

background until it gets out of the display. However, automatically acquired

targets are canceled starting far distance from own ship.

5.2.2 Canceling Unwanted Tracked Targets [ACQ CANCEL]

Unwanted tracked targets can be canceled one by one in the following cases:

•Tracking is no longer necessary for targets with which vectors/symbols are

displayed after being acquired and tracked.

•The number of vectors on the radar display needs to be reduced for easy

observation.

When targets are to be re-acquired from the beginning, all the current vectors can

also be canceled.

5.2.2.1 Canceling targets one by one [ACQ CANCEL]

Procedures

1) Put the cursor on the tracked target to the desired for canceling

target, and press the [ACQ CANCEL] key.

The vectors and symbols of the tracked targets will disappear, and only the radar video

remain.

5.2.2.2 Canceling all targets collectively [ACQ CANCEL]

Procedures

1) Press the [ACQ CANCEL] key for 5 seconds.

The vectors and symbols of all the targets will disappear, and only the radar videos remain.

NOTE:

When all the targets have been canceled, the system stops

tracking them. Thus, you need to re-acquire targets in manual

or automatic acquisition mode. Do not cancel all the targets

unless otherwise required.

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5－17

5.2.3 Tracked Target Data Display [TGT DATA]

5.2.3.1 Type of Data Display (Target Information)

The target for which its numeric data is displayed is marked with a symbol

to distinguish from other targets.

If a target's data is displayed, but without the symbol , such a target exists

outside the currently displayed radar display.

5.2.3.2 Method of Displaying Numeric Data [TGT DATA]

Procedures

1) Put the cursor on the tracked target for which numeric data is to

be displayed, and press the [TGT DATA] key.

Then, the data of the designated target will appear, it will be marked with a symbol .

The target data will remain on the radar display until the target is lost and its vector

disappears, or until another target is designated.

If a target with the mark is designated, only its true bearing and range will appear until

its vector appears.

When a target or own ship changes its course, or

when a new target is acquired, its vector may not

reach a given level of accuracy until 3 minutes or

more has passed after such course change or target

acquisition.

Even if 3 minutes or more has passed, the vector

may include an error depending upon the tracking

conditions.

Target Data

Target identification (TT ID) ID number of the target

True bearing(BRG) 0.1° unit

Range 0.01NM unti

Cource 0.1° unit

Speed 0.1knot unit

Closest point of approach

(CPA)

0.01NM unit

Time to CPA (TCPA) 0.1min unit

Bow crossing range (BCR) 0.01NM unit

Bow crossing time (BCT) 0.1min unit

Attention

5－18

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5.2.3.3 Cancellation of Numeric Data Display (CNCL Data)

Procedures

1) Put the cursor on the tracked target with which numeric data is

displayed, and right-click.

The cursor mode list will appear.

2) Left-click button.

The numeric value will disappear.

5.2.4 Displaying Target ID No.(Target Number Display)

A target ID number is a value displayed beside the acquisition symbol when a

target is acquired.

A target ID number 1 to 100 is assigned to each target in acquisition order. Once a

target ID number is assigned, it identifies the target until the target is lost or the

target acquisition is canceled.

Procedures

1) Open the TT Menu by following menu operation.

2) Left-click the item button of

Target Number Display will appear.

3) Press the [numeric] key corresponding to the display method to

be set.

If there are many tracking targets and their symbol display is confusing, set Target Number

Display to off to view the radar display easily.

: Displays target ID numbers.

: Hides target ID numbers.

: Displays target ID number with target track.

An ID number is always displayed for only targets with which

numeric data is displayed.

6. CNCL Data

4. Target Number Display

Off

Target Track

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5－19

5.2.5 Adding Tracked Target ID Name (Name)

The system can enter a name for each of tracking targets that have been acquired.

Procedures

1) Put the cursor on the tracked target, and right-click.

The cursor mode list will appear.

2) Left-click

The Property will appear.

3) Left-click the item button of .

The setting items for ship name (Name) will be displayed.

4) Select the input method.

5.2.5.1 Entering a new ship name (Input)

5) Input a new ship name.

Up to 8 characters can be input as a ship name.For the input method on the character input

screen, see Section 3.3.4.7 "Entering a character".

The input name by selecting is saved in Data Base .

5.2.5.2 Selecting one of previously input ship names (Data Base)

5) Press the [numeric] key corresponding to the ship name to be

selected.

The selected ship name will be entered.

:Selection of one of previously input ship

names.When this method is selected, a list of ship

names that have been input by selecting

will be displayed.

:Input of a new ship name. When this method is

selected, the ship name (Name) input window will

open.

Data Base can contain 30 ship names.

8. Property

1. Name

Data Base

Input

5－20

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5.2.6 Reference Target (Reference)

The system can display the own ship's speed. To do so, it sets a reference target by

tracking a target for which ground fixed.

Procedures

1) Tracking a target for which ground fixed.

2) Put the cursor on the tracked target, and right-click.

The cursor mode list will appear.

• The reference target function is to be used if the own ship's

speed cannot be displayed normally due to trouble such as a

speed sensor malfunction. Do not use the reference target

function except in emergencies.

• If the speed or course of the own ship is changed or a new

reference target is set, the displayed speed may take 3 minutes or

more to reach the specified speed after the speed / course

change or the setting.

• Even after 3 minutes or more has passed, the speed may differ

from the specified speed depending on the tracking condition.

• If a large radar echo such as a land target is set as a reference

target, the vectors of the speed and other tracking targets will not

be displayed correctly and may cause an accident.

• If a sailing ship is set as a reference target, the vectors of the

speed and other tracking targets will not be displayed correctly

and may cause an accident.

• If the is selected for the speed sensor, the AIS function

cannot be turned on.

• If the reference target is lost or the target tracking function is

stopped, the speed sensor is placed in manual mode .

• The loss of a reference target may have a major impact on the

accuracy of the results for true speed and true course of the

target and that own speed will be degraded.

• The reference targets are only used for the calculation of true

speed.

Attention

REF .

MAN

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5－21

3) Left-click

The Property will appear.

4) Left-click the item button of

The reference target function will be set to on or off.

5) Left-click the speed sensor switching button in the Own Ship

Information located at the upper right of the display, and select

The speed of own ship calculated from the reference target will be displayed.

When a reference target is set, the symbol display is changed to .

Only one target can be set as a reference target.When a new reference target is set, the

previously set reference target is canceled.

5.2.7 Operation Test (TT Test Menu)

The following functions are available for testing the target tracking function:

:A reference target is set.

:The reference target is canceled.

This function is provided to test if the target tracking

function is operating normally. Thus, do not use the

function except when you test the target tracking

function.

In particular, if the operation test mode is used during

navigation, pseudo targets appear on the radar display

and they are confused with actual targets.

Do not use the mode during navigation. Otherwise, an

accident may result.

Test Video Makes an operation check on the target detection circuit.

TT Simulator Generates pseudo targets on the radar display in order to test

if the target tracking function is operating normally.

Status Displays the status of the target tracking function.

Gate Display Displays the gate size for acquiring / tracking a target.

8. Property

3. Reference

Off

REF.

5－22

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5.2.7.1 Test Video (Test Video)

Test Video is used to check whether the video signals under target acquisition and

tracking are inputted to and processed in the target detection circuit normally.

However, it is sufficient to check that VDH in Test Video is displayed.

Procedures

1) Open the TT test menu by following menu operation.

→

2) Left-click the item button of .

The setting items for Test Video will be displayed.

3) Select the test video to be displayed.

In general, is sufficient for target display checks in test video mode.

Cancel

1) Left-click the item button of while the TT Test Menu is

displayed.

The setting items for Test Video will be displayed.

2) Left-click button.

The test video display will be turned off.

NOTE:

Test Video may not be displayed for a target which is not yet

acquired or tracked. Test Video may not be displayed either if

the [GAIN] dial or [SEA] dial is not properly adjusted.

If any target displayed clearly in the radar display is not

displayed in the Test Video mode, the target detection circuit of

the Target Tracking unit may have a trouble.

9. TT Test Menu

1. Test Video

VDH

1. Test Video

Off

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5－23

5.2.7.2 Target Tracking Simulator (Target Tracking Simulator)

Pseudo targets can be generated in certain known positions to check whether the

target tracking units are operating normally. Since the pseudo targets move

depending on known parameters, the values for these pseudo targets can be

compared with the known value if the pseudo targets are acquired and tracked,

and displayed. Thus, it can be checked if the system is operating normally.

Procedures

1) Press the [TX/STBY] key to stop the transmitting.

The equipment will enter the transmission standby state.

2) Open the TT Test Menu by performing the following menu

operation.

→

3) Left-click the item button of .

The setting items for TT Simulator will be displayed.

4) Select the scenario to be set.

5) Press the [TX/STBY] key to transmit.

The simulator will be activated and generate pseudo targets. The characters "X" at the

bottom of the radar display blinks indicating that the simulation mode is active.

Target tracking simulator / scenario

Scenario Target start point Target end point Pseudo-target

speed

Distance Bearing Distance Bearing

1 3.2NM 20° 1NM 90° 20kn

2 6NM 0° 0NM 0° 10kn

3 6NM 18° every 1NM 18° every 10kn

4 6NM 45° 1NM 45° 105kn

5 6NM 45° 6NM 150° 20kn

6 6NM 45° 6NM 150° 20kn

When the simulator is operating, set 0° as the heading bearing,

and 0 kn as the speed of own ship.When the range between

own ship and the pseudo target is 0, the target will disappear.

9. TT Test Menu

2. TT Simulator

5－24

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

Exit

1) Press the [TX/STBY] key to stop the transmitting.

The equipment will enter the transmission standby state.

2) Left-click the item button of while the TT Test

Menu is displayed.

The setting items for TT Simulator will be displayed.

3) Left-click .

The TT Simulator display will be turned off.

5.2.7.3 Status display (Status)

The current Target Tracking status will appear.

Procedures

1) Open the TT Test Menu by performing the following menu

operation.

→

2) Left-click the item button of .

The setting items for Status will be displayed.

: Vector response

: Threshold value used for automatic acquisition

: Threshold value used for tracking

: Unused

: Size of gate used for tracking

: Number of targets currently acquired

2. TT Simulator

Off

9. TT Test Menu

3. Status

*Constant

*VID Level TD

*VID Level HIGH

*VID Level LOW

*Gate Size

*Tracking

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION

5－25

5.2.7.4 Gate Display

The gate displays an area monitoring a target using the Target Tracking function.

This radar equipment allows the gate size to change automatically according to

target range and size. User can check the gate size using the following function.

Procedures

1) Open the TT Test Menu by performing the following menu

operation.

→

2) Left-click the item button of .

The gate display mode is switched.

3) Display the numeric value of a target according to Section 5.2.3

"Tracked Target Data Display [TGT DATA]" .

The numeric value of the target will be displayed, and the tracked target symbol will be

enclosed in a green gate.

: Gate is displayed

: Gate is not displayed

The Target Tracking can display the gate of two targets

simultaneously.

9. TT Test Menu

4. Gate Display

Off

Tracked Target symbol

Echo Gate (displayed in green

)

Vector

5－26

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

5.3 AIS OPERATION

5.3.1 Restrictions

The following restrictions are placed on use of the AIS function.

The AIS function is unavailable in the following cases:

• or is selected for the speed sensor.The current offset (Set/Drift

Setting) is set while or is selected for the speed sensor.

or cannot be selected for the speed sensor in the following case:

•The AIS function is turned on and the current offset (Set/Drift Setting) is

selected.

cannot be selected for the speed sensor in the following case:

•The AIS function is On.

Current offset (Set/Drift Setting) cannot be turned On in the following case:

• or is selected for the speed sensor while the AIS function is on.

5.3.2 Setting AIS Display Function (AIS Function)

Procedures

1) Press the [AIS/TT] key. Alternatively, left-click the button

in the Target Information located at the upper right of the display.

The received AIS information will be shown on the radar display.

• When the AIS function is set to Off, the AIS display

function is turned off and AIS symbols are no longer

displayed.

• Once the AIS display function is set to Off, it is not

automatically switched to On even if a dangerous

target exists.

MAN

REF.

LOG 2AXW

MAN

LOG 2AXW

Attention

AIS

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

5－27

5.3.3 Activate AIS Targets (Activate AIS)

Activate an AIS target, and display the target’s vector and make a collision

decision.

5.3.3.1 Manual activation (ACT AIS)

Activate an AIS target in manual mode to display the vector and heading line.

Procedures

1) Put the cursor on the AIS symbol to be activated, and right-click.

The setting items for cursor modes will be displayed.

2) Left-click .

The selected AIS target will be activated.

5.3.3.2 Automatic activation

Activate an AIS target in automatic mode to display the vector and heading line.

When the automatic activation function is used, AIS targets are automatically activated when

they go into the automatic activation zone. The automatic activation zone is identical to the

automatic acquisition zone (AZ) used for target tracking. For the zone setting, refer to

Section 5.2.1 "Acquiring Target [ACQ]"

The position of the scanner shall be at the centre of the azimuth or range in the acquisition/

activation zone.

If there are more AIS targets than the allowable maximum, they are deactivated in the low-

priority (See the Section 5.1.2 "Definitions of Symbols").

5.3.4 Deactivate AIS Targets (Deactivate AIS)

Deactivate an AIS target and clear the display of the vector and heading line.

Procedures

1) Put the cursor on the AIS target to be deactivated, and right-click.

The setting items for cursor modes will be displayed.

2) Left-click

The selected AIS target will be deactivated.

If an AIS target is activated but the vector is not displayed, refer

to Section 5.3.6 "Displaying Target ID No. (Target Number

Display)".

This operation is available only for an activated AIS target.

2. ACT AIS

5. DEACT AIS

5－28

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

5.3.5 Displaying AIS Information [TGT DATA]

5.3.5.1 Types of information displayed

There are two modes (simple and detail) to display AIS target information. The

display items are determined by the selected mode.

The detail mode displays the numeric data of only a single ship, the simple mode can display

the numeric data of up to two ships.

For NAV Status, one of the following statuses is displayed in accordance with

Navigation Status:

Display Item Detail mode Simple mode

NAME (ship name) Up to 20 characters

Call Sign Up to 7 characters

MMSI Up to 9 characters

COG (course over ground) or CTW (course through water) 0.1° unit

SOG (speed over ground) or STW (speed through water) 0.1kn unit

CPA (closest point of approach) 0.01NM unit

TCPA (time to CPA) 0.1min unit

BRG (true bearing) 0.1° unit Not

displayed

Range 0.01NM unit

HDG (heading bearing) 0.1° unit

ROT (rate of turn) 0.01° /min

POSN (latitude / longitude) 0.001' unit

Destination (waypoint) Up to 20

characters

NAV Status Status (number)

No. Status

0 Under Way Using Engine

1at Anchor

2 Not Under Command

3 Restricted Manoeuvrability

4 Constrained by Her Draft

5 Moored

6 Aground

7 Engaged in Fishing

8 Under Way Sailing

9 Reserved

10 Reserved

11-14 Reserved

15 Not Defined

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

5－29

5.3.5.2 Displaying AIS Target Information [TGT DATA]

Procedures

1) Put the cursor on the AIS target of which information is to be

displayed , and press the [TGT DATA] key.

The information of the selected AIS target will be displayed.

5.3.5.3 Canceling AIS Target Information Display (CNCL Data)

Procedures

1) Put the cursor on the activated AIS target of which information

display is to be cancelled, and right-click.

The setting items for cursor modes will be displayed.

2) Left-click .

The information display of the selected AIS target will be cleared.

5.3.5.4 Selecting Detail / Simple Mode for AIS Target Information Display

Procedures

1) Left-click the or button in the Digital Information located

at the center right of the display.

The detail or simple mode display for AIS target information will be selected.

5.3.5.5 Message

Received AIS messages can be displayed.

Up to 10 messages of addressed message and up to 10 messages of broadcast message can be

displayed.

If the number of messages exceeds 10, the oldest received messages are sequentially deleted.

[1] Displaying Message Selected from List (Message)

Procedures

1) Open the Message menu by performing the following menu

operation.

When the numeric data of a target is displayed but the mark

is not on the radar display, the target is outside the

display.

AIS12

6. CNCL Data

□

＿

5－30

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

→

2) Left-click or .

Addressed messages list or broadcast messages list are displayed.

Each list shows ship names and message-received time.

For an unread message, is displayed to the left of the item number.

3) Left-click the item button to display the message.

The message will appear.

[2] Displaying Specified Target's Message

Procedures

1) Display AIS target information.

If there are messages from the target, a message mark will be displayed in the Digital

Information located at the center right of the display.

2) Left-click the unread message display button in the Digital

Information located at the center right of the display.

The message will appear.

[3] Deleting Message (Delete)

Procedures

1) Left-click while the message is displayed.

The Confirmation Window will appear.

2) Left-click to delete the message.

The message will be deleted, and the ship name and message-received time will disappear

from the list.

AIS

9. TT Test Menu

Addressed Message Broadcast Message

1. Delete

1. Yes

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

5－31

5.3.5.6 Displaying Data of Lost AIS Target (Display Lost TGT Data)

The data of the last-lost AIS target can be displayed.

The data of only one target that has been lost most recently can be displayed.

Procedures

1) Open the Display Lost Target Data menu by performing the

following menu operation.

→

The data of the last-lost AIS target will be displayed.

5.3.5.7 Displaying Own Ship's AIS Data (Own Ship's AIS Data)

The AIS data of own ship can be displayed.

Procedures

1) Open the Own Ship's AIS Data menu by performing the following

menu operation.

→

The own ship's AIS data will be displayed.

5.3.6 Displaying Target ID No. (Target Number Display)

When an AIS target is activated, a target ID number is displayed next to the AIS

target symbol.

A target ID number 1 to 100 is assigned to each target in activation order. Once a

target ID number is assigned, it identifies the target until the target is lost or

deactivated.

Procedures

1) Open the Target Number Display menu by performing the

following menu operation.

→

AIS

8. Display Lost Target Data

AIS

9. Own Ship’s AIS Data

AIS

4. AIS Filter Setting

5－32

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

2) Left-click the item button corresponding to the display method to

be set.

If there are many tracking targets and their symbol display is confusing, set Target Number

Display to off to view the radar display easily.

5.3.7 Setting AIS Filter (AIS Filter Setting)

5.3.7.1 About an AIS filter

By setting an AIS filter, an AIS target in the area can be displayed by priority or

only the targets in the area can be displayed. An AIS filter is initially set in a circle

having a radius of 20 [nm] from the CCRP. If 301 or more AIS targets exist in the

filter range, they are displayed in the priority order explained in Section 5.1.2

"Definitions of Symbols".

5.3.7.2 Types of AIS Filters (Filter Type)

There are the following 3 types of AIS filters:

Procedures

1) Left-click the AIS filter mode switching in Target Information

located at the upper right of the display, and select the filter to be

set.

The AIS filter will be selected.

: Displays target ID numbers.

: Hides target ID numbers.

: Displays target ID number with AIS track.

: Displays the ship's name.

An ID number or ship's name is always displayed for only

targets with which numeric value is displayed.

: A filter is set in a circle with a set range as the radius.

: A filter is set in a sector formed by two bearings with the

bow as reference.

: A filter is set in a zone formed by two bearings and two

ranges with the bow as reference.

Off

Target Track

Ship

’

s Name

Range

Sector

Zone

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

5－33

5.3.7.3 Creation of AIS Filter (Make AIS Filter)

Procedures

1) Open the AIS Filter Setting menu by performing the following

menu operation.

→

2) Left-click .

The mode to make an AIS filter will be activated.

[1] Setting Range Filter

3) Set a filter range by turning the [VRM] dial, and left-click.

[2] Setting Sector Filter

3) Set a starting bearing by turning the [EBL] dial, and left-click.

4) Set an ending bearing by turning the [EBL] dial, and left-click.

[3] Setting Zone Filter

3) Set a starting bearing and range by turning the [EBL] dial and

[VRM] dial, and left-click.

4) Set an ending bearing and range by turning the [EBL] dial and

[VRM] dial, and left-click.

When the automatic activation function is enabled, the filter

range is automatically changed for covering the automatic

activation zone. Thus, the automatic activation zone is always

within the filter range.

AIS

4. AIS Filter Setting

2. Make AIS Filter

5－34

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

5.3.7.4 AIS Filter Display On/Off (Filter Display)

Procedures

1) Open the AIS Filter Setting menu by performing the following

menu operation.

→

2) Left-click the item button of .

Filter Display will be set to on or off.

5.3.7.5 Display of Targets outside AIS Filter (Filter Mode)

Procedures

1) Open the Filter Mode menu by performing the following menu

operation.

→

2) Left-click the item button of .

: Displays only AIS targets in the AIS filter.

: Displays AIS targets in the AIS filter by priority, and also

displays targets outside the AIS filter.

Activated AIS targets can be displayed even when they are

outside the AIS filter.

AIS

4. AIS Filter Setting

3. Filter Display

AIS

4. AIS Filter Setting

6. Filter Mode

Display

Priority

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

5－35

5.3.7.6 Point Filter

AIS targets which are not displayed because they are outside the AIS filter or at

low priority levels can be activated by giving a higher priority to them.

Procedures

1) Put the cursor on the position where a point filter is to be set,

and right-click to select the filter to be set.

The setting items for cursor modes will be displayed.

2) Left-click .

A point filter will be set at the cursor position.

If an AIS target is in the point filter, it will be activated.

When an AIS target is activated or an AIS target is not found within one minute, the point

filter will be cleared.

5.3.8 Conditions for Deciding AIS Target to be Lost

About a lost target

When the data of an AIS target cannot be received for a specified time, the target

is decided to be lost and the target data is deleted. As shown in the table below,

the time until target data is deleted varies depending on the class of receive data

and the target status.

If the [ALARM ACK] key is pressed, the symbol is cleared.

The point filter's range is 1 nm, and cannot be changed.

Deciding AIS Target to be Lost

Target status Time until data deletion

SOLAS ship (Class A) SOLAS ship (Class B)

Vessel below 3 knots (Class A) or 2 knots

(Class B) and it is now at anchor or on the berth

18 min 18 min

Vessel of 3 knots or more and it is now at

anchor or on the berth

60 sec 18 min

Vessel of 0 to 14 knots (Class B: 0 to 14 knots) 60 sec 180 sec

Vessel of 14 to 23 knots 36 sec 180 sec

Vessel of 23 knots or more 30 sec 180 sec

When a dangerous target ship is lost, a lost alarm is issued and

the symbol changes to a lost symbol. The system calculates

the current position from the last-received data and continues

displaying the symbol for eternity.

2. ACT AIS

5－36

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION

5.3.9 Setting Conditions for AIS Alarm (AIS Alarm Setting)

Conditions for issuing a Lost alarm and CPA/TCPA alarm for AIS targets can be

set.

5.3.9.1 Setting of Condition for Lost Alarm

Procedures

1) Open the AIS Alarm Setting menu by performing the following

menu operation.

→

2) Left-click the item button of .

The setting items for Lost Alarm will be displayed.

3) Left-click the item button corresponding to the condition to be

set.

5.3.9.2 Setting of Condition for CPA/TCPA Alarm

Procedures

1) Open the AIS Alarm Setting menu by performing the following

menu operation.

→

2) Left-click the item button of .

The setting items for CPA/TCPA Alarm is switched.

: A lost alarm is not issued.

: A lost alarm is issued only for AIS targets for which a

dangerous target alarm has been issued.

: A lost alarm is issued only for activated AIS targets and

AIS targets for which a dangerous target alarm has been

issued.

A lost alarm is not issued for sleeping AIS targets.

: A CPA/TCPA alarm is issued only for activated AIS targets.

: A CPA/TCPA alarm is issued for all AIS targets on the radar

display.

AIS

6. AIS Alarm Setting

1. Lost Alarm

Off

Danger

ACT&Danger

AIS

6. AIS Alarm Setting

CPA/TCPA Alarm

ACT

ACT &Sleep

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.4 DECISION OF TARGETS AS IDENTICAL

(Association)

5－37

5.4 DECISION OF TARGETS AS

IDENTICAL (Association)

5.4.1 Setting of Function to Decide Targets as Identical

(Association)

When an AIS target and a tracking target are decided to be identical, an

association symbol is displayed for the targets regarded as identical. In this case,

the AIS target symbol is automatically activated.

Procedures

1) Left-click the in Target Information located at the

upper right of the display.

Association will be set to on or off.

5.4.2 Setting of Conditions for Deciding AIS and Tracked Targets

as Identical (Association Setting)

Procedures

1) Open the Association Setting menu by performing the following

menu operation.

→

The Association Setting menu will appear.

2) Select and enter the item to be set.

Conditions for deciding targets as identical will be set. When the differences of all item

between AIS and tracked target are under the set conditions..

• Turn off in order not to make a decision

on if targets are identical, or in order to display

symbols that have disappeared.

Attention

Association

AIS

1. Association Setting

5－38

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.4 DECISION OF TARGETS AS IDENTICAL

(Association)

Once regard as identical, when one of the differences exceed 125% of the set condition, they

are regarded as dissidence.

5.4.3 Types of Decision Conditions to be Set

The setting for this function is common to Association Setting in

the AIS Menu.

Decision conditions

1. Association On / Off (Function to decide targets as

identical)

2. Priority AIS / TT (Symbol to be displayed)

3. Bearing 0.0～9.9°

4. Range 0～999m

5. Cource 0～99°

6. Speed 0～99kn

7.Applicable AIS Target ACT or ACT&Sleep (activated AIS target or

all AIS target)

If a great value is set as a condition for deciding

targets as identical, a tracking target near an AIS target

is regarded as identical to the AIS target and it may not

be displayed any more.

For example, when a pilot boat (which is a small target

not being tracked) equipped with an AIS function

approaches a cargo ship as a tracking target not

equipped with an AIS function, the tracking target

symbol of the cargo ship may not be displayed any

more.

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.5 ALARM DISPLAY

5－39

5.5 ALARM DISPLAY

Alarm messages for Target Tracking (TT) and AIS functions:

Error message and alarm are displayed in the lower right of the display.

Error message Description

CPA/TCPA There is a dangerous target.

New Target A new target is acquired in the automatic acquisition zone.

Lost There is a lost target.

REF Target The accuracy of the reference target may be decreased.

95% Capacity The number of targets being tracked by the Target Tracking

function has reached 95% of the maximum.

MAX Target The number of targets being tracked by the Target Tracking

function has reached the maximum.

AIS 95% Capacity The number of displayed AIS target symbols has reached 95%

of the maximum.

AIS MAX Target The number of received data items exceeds the maximum

number of AIS target symbols that can be displayed.

AIS ACT 95% Capacity The number of activated AIS targets by the AIS function has

reached 95% of the maximum.

AIS ACT MAX The number of activated AIS targets by the AIS function has

reached the maximum.

AIS Alarm *** Alarm information issued with the ALR sentence by the AIS.

*** is a 3-digit number which is Local Alarm No in the ALR

sentence.

AIS Alarm 001 Tx malfunction

AIS Alarm 002 Antenna VSWR exceeds limit

AIS Alarm 003 Rx channel 1 malfunction

AIS Alarm 004 Rx channel 2 malfunction

AIS Alarm 005 Rx channel 70 malfunction

AIS Alarm 006 general failure

AIS Alarm 008 MKD connection lost

AIS Alarm 025 external EPFS lost

AIS Alarm 026 no sensor position in use

AIS Alarm 029 no valid SOG information

AIS Alarm 030 no valid COG information

AIS Alarm 032 Heading lost/invalid

AIS Alarm 035 no valid ROT information

5－40

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.5 ALARM DISPLAY

5.5.1 CPA / TCPA Alarm

In the system, targets are categorized into two types: tracked / activate AIS targets

and dangerous targets.

The grade of danger can easily be recognized on the display at a glance. So the

officer can easily decide which target he should pay attention to.

It is not possible to switch off the tracked target visual alarm, unless tracking is

ceased, or the alarm condition no longer applies.

The types of target and alarm are shown below.

CPA Limit and TCPA Limit: The Setting Values

Since these alarms may include some errors

depending on the target tracking conditions, the

navigation officer himself should make the final

decision for ship operations such as collision

avoidance.

Making the final navigation decision based only on the

alarm may cause accidents such as collisions.

CPA / TCPA Alarm

Status Symbol on

display

Alarm

characters

Alarm

sound

Conditions

Tracked target (Off) (Off) ・CPA>CPA LIMIT

・0>TCPA

・TCPA>TCPA LIMIT

The symbol is displayed

when one of the above

conditions is met.

Activated AIS

target

Dangerous

target

Red blinking

CPA/TCPA Beep

sound

(pee-poh)

Alarm

acknowle

dgeable

・CPA ≦CPA LIMIT

・0≦TCPA≦TCPA LIMIT

An alarm is issued when all

the conditions are met.

The AIS targets that issues

alarm refer to 5.3.9

Red blinking

AIS12

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.5 ALARM DISPLAY

5－41

5.5.2 Alarm for New Target Acquired in Automatic Acquisition

Zone (New Target)

The automatic acquisition function sets a zone in a range and issues an alarm

when a new target (which is not yet acquired) goes into this zone.

For the setting of an automatic acquisition zone, refer to " Acquiring Target " in

Section 5.2.1.1 "Automatic acquisition".

5.5.3 Lost Target Alarm (Lost)

In setting an automatic acquisition zone, it is

necessary to adjust the gain, sea clutter suppression

and rain / snow clutter suppression to ensure that

target echoes are displayed in the optimum conditions.

No automatic acquisition zone alarms will be issued

for targets undetected

Alarm for New Target Acquired in Automatic Acquisition Zone

Status Symbol on

display

Alarm

characters

Alarm sound Conditions

New target in

automatic

acquisition

zone Red Blinking

New Target Beep sound

(pipi-pipi)

Alarm

acknowledge

able

The alarm is issued

when a new target is

acquired in the

automatic acquisition

zone.

When an already acquired target goes into automatic

acquisition zone, the alarm message is not displayed and the

buzzer does not sound either.

• If the gain, sea clutter suppression, rain/snow clutter

suppression are not adjusted adequately, the lost

target alarm may be easily generated. So such

adjustments should be mad carefully.

Attention

5－42

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.5 ALARM DISPLAY

When it is impossible to continue tracking any acquired and tracked target, or the

data of AIS target cannot received for a specified time, the

will be generated. The typical causes for alarm generation are shown below, but

not limited to the following:

•The target echo is very weak.

•The target is shadowed by a shore or a large ship and its echo is not received.

•The target echo is blurred by sea clutter returns.

If a target under tracking goes out of a range of 32 nm and can no longer be

tracked, it is canceled without a lost target alarm.

5.5.4 Gyro Set Alarm

The GYRO I/F in this system receives signals from a gyro. Even if the power is

turned off, the system will follow up the gyro. However, the system stops the

follow-up operation when the power of the master gyro is turned off or when any

trouble occurs to the line. When the power of the master gyro is recovered, the

alarm will be generated.

If this alarm occurs, set the gyro.

Lost Target Alarm

Status Symbol on

display

Alarm

characters

Alarm

sound

Conditions

Lost Target

Red Blinking

Lost Beep sound

(pee)

Alarm

acknowledge

able

The alarm will sound

once when a lost

target symbol is

displayed.

Red Blinking

Gyro Set Alarm

Alarm

characters

Alarm sound Conditions

Set Gyro Beep sound (pipi-pipi) The signals from the gyro are stopped, but the

gyro is recovered.

Lost Alarm

AIS12

Set Gyro

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

5－43

5.6 TRACK FUNCTION

5.6.1 Past Position (Past POSN)

Procedures

1) Left-click the past position display interval unit switching button

in the Target Information located at the upper right of the display,

and set a desired unit.

The past position display interval unit will be set to or .

2) Left-click the past position display interval switching button in

the Target Information located at the upper right of the display,

and set a desired track display interval.

The past position will be set.

The past position function

can display up to ten past

positions of a target under

tracking. The past position

display interval can be set to

specified time intervals of

0.5, 1, 2, or 4 minutes, or

specified range intervals of

0.1, 0.2, 0.5, or 1 nm.

The specified interval is displayed in the past position display interval switching

in Target Information located at the upper right of the display. When is

displayed, the track display function is turned off.

The track mode operates in conjunction with the vector mode, and a true or

relative track is displayed. In relative vector mode, the relative tracks of the target

are displayed. In true vector mode, true tracks that are calculated from the relative

bearing, range, own ship's course, and speed are displayed.

The target is acquisition, past position of traced target is start plot. The AIS target

is displayed, past position of AIS target is start plot.

If the past position plotted time is short, the indicated past position duration may

not have achieved the specified time or range.

: Tracks are not displayed.

Numeric : Tracks are displayed at intervals of a specified value.

min NM

Off

Past position

display interval

Past position

true / relative

Past position

display interval unit

Off

5－44

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

5.6.2 Target Ship's Tracks (Target Track)

This function makes settings for the tracks of tracked targets and AIS targets.

The system can display the tracks of up to 20 target ships.

5.6.2.1 Track Color Setting (Target Track Color)

Procedures

1) Put the cursor on the tracked target or activated AIS target, and

right-click.

The setting items for cursor modes will be displayed.

2) Left-click .

The Property will appear.

3) Left-click the item button of .

The setting items for Track Color will be displayed.

4) Left-click the button corresponding to the track color to be set.

Colors set by performing the procedure in Section 5.6.2.3 "Setting of Target Ship's Track

Colors (Target Track Color)" can be selected.

Individual colors can be set for up to 10 ships. The same color is set for 11 to 20 ships.

5.6.2.2 Target Ship's Track Function On/Off (Target Track Function)

Procedures

1) Open the T.TRK menu by performing the following menu

operation.

→

2) Left-click the item button of .

The Target Track Function will be set to on or off.

: Target Track Function is turned on.

: Target Track Function is turned off.

Note that when this function is turned off, all the other ship's

track functions are turned off. In this case, the track data of

other ships is not saved, so they cannot be traced later.

Property

2. Track Color

2. Target Track Setting

1. Target Track Function

Off

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

5－45

5.6.2.3 Setting of Target Ship's Track Colors (Target Track Color)

You can set either one track color for all targets under tracking, or individual

colors for the ships of track numbers 1 to 10. The tracks of ships 11 to 20 are

displayed in the same color.

Procedures

1) Open the Target Track Color menu by performing the following

menu operation.

→

The setting items for All will be displayed.

2) Left-click the button corresponding to the track display to be set.

Individual setting

3) Left-click the button corresponding to the track number to be set.

The setting items for the selected track number will be displayed.

4) Left-click the button corresponding to the track color to be set.

The track color of the selected track number will be set.

When is selected, the track numbers to and

the individual setting for are valid. Select a color for each target.

The color list is displayed by left-clicking the button corresponding to the item

number to be set. Select a desired color. There are 8 color choices: ,

, , , , , , and .

If the other ship's track function (Target Track Function) is

turned off, the track data of other ships is not saved.

: Track color is set individually for ships.

color name : One color is set for all ships.

～ : Setting for 1 to 10 ships

: Setting for 11 to 20 ships

Note that the individual setting is not enabled unless Individual

is selected.

2. Target Track Setting

2. Target Track Color

1. All

Individual

Target Track No.1

No.10

Other

Off

White Gray Blue Green Yellow Pink Red

Target Track No.1

No.10

Other

5－46

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

5.6.2.4 Setting of Target Ship's Track Display (Target Track Display)

The target track display function can be turned on / off. Choices for track display

are displaying / hiding the tracks of all ships and Individual (displaying the tracks

of individual ships).

Procedures

1) Open the Target Track Display menu by performing the following

menu operation.

→

The setting items for All will be displayed.

2) Left-click the button corresponding to the track display to be set.

Individual setting

3) Left-click the button corresponding to the track number to be set.

The selected track number display will be set to on or off.

When is selected, the track numbers to and

the individual setting for are valid. Select on / off for each target.

: Track display is set for individual ships.

: The tracks of all ships are hidden.

: The tracks of all ships are displayed.

Even when Target Track Display is turned off, the track data of

other ships is saved if Track Memory Interval is set.

:The track number display is turned on.

:The track number display is turned off.

～ : Setting for 1 to 10 ships

: Setting for 11 to 20 ships

Note that the individual setting is not enabled unless Individual

is selected.

2. Target Track Setting

3. Target Track Display

1. All

Individual

Off

Individual

Target Track No.1 No.10

Other

Target Track No.1 No.10

Other

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

5－47

5.6.2.5 Setting of Target Ship's Track Saving Interval (Track Memory Interval)

An interval for saving target ship's track data can be set.

Procedures

1) Open the Track Memory Interval menu by performing the

following menu operation.

→

2) Left-click the button corresponding to the interval to be set.

Select an interval from the following:

5.6.2.6 Clear of Target Ship's Track (Clear Track)

The target ship's track can be cleared by setting a color or a track number.

[1] Clear of Tracks by Setting Color (Clear Track Color)

Procedures

1) Open the Clear Track Color menu by performing the following

menu operation.

→

The setting items for Clear Track Color will be displayed.

This function is not available when the Target Track Function is

turned off.

Off/

3sec/5sec/10sec/30sec/

1min/3min/5min/10min/30min/60min/

1NM/3NM/5NM/10NM

If Card T.TRK Display is used, target ship's tracks displayed

through the card cannot be cleared.

2. Target Track Setting

4. Track Memory Interval

2. Target Track Setting

5. Clear Track Color

5－48

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

2) Left-click the button corresponding to the color of the target

tracks to be cleared.

The Confirmation Window will appear.

3) Left-click to clear the track line.

All the tracks of the selected color will be cleared.

[2] Clear of Tracks by Setting Track Number (Clear Track Number)

Procedures

1) Open the T.TRK menu by performing the following menu

operation.

→

The setting items for Clear Track Number will be displayed.

2) Left-click the button corresponding to the number of the tracks

to be cleared.

The Confirmation Window will appear.

3) Left-click to clear the track line.

The tracks of the selected number will be cleared.

5.6.2.7 Operation of Target Ship's Track Data Saved on Card (File

Operations)

Target ship's track data can be saved on a flash memory card and read from the

card.

[1] Loading File (Load)

Procedures

1) Insert a flash memory card into the card slot

Flash memory card (option) is necessary.

Data can be saved to a flash memory card until the card

becomes full, but the number of files that can be read and

displayed is limited to 64 in alphanumeric order. When the

number of files has reached 64, delete unnecessary files.

1. Yes

2. Target Track Setting

6. Clear Track Number

1. Yes

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

5－49

2) Open the File Operations menu by performing the following

menu operation.

→

3) Left-click the item button of to select a card slot.

The setting item for Select Card Slot is switched between Slot1 and Slot2.

4) Left-click the item button of to select Add or

Overwrite.

The setting item for Load Mode is switched between and

When is selected, new data is added to the current data on the

card. When is selected, new data is saved over the current data

on the card.

5) Left-click .

Currently saved target ship's track data will be listed.

6) Left-click the button corresponding to the file to be loaded.

The Confirmation Window will appear.

7) Left-click to load the file.

The selected target track data will be loaded and shown on the radar display.

[2] Saving File (Save)

Procedures

1) Insert a flash memory card into the card slot.

Flash memory card (option) is necessary.

2. Target Track Setting

7. File Operations

1. Select Card Slot

2. Load Mode

Add

Overwrite

Add

Overwrite

3. Load

1. Yes

5－50

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

2) Open the File Operations menu by performing the following

menu operation.

→

3) Left-click the item button of to select a card

slot.

The setting item for Select Card Slot is switched between Slot1 and Slot2.

4) Left-click .

The Input File Name menu will appear.

5) Input the file name to be saved.

Up to ten characters can be input as a file name.

For inputs to the characters input screen, refer to Section 3.3.4.7 "Entering a character". After

the input, the Confirmation Window will appear.

6) Left-click to save the file.

The currently displayed target track data will be saved.

2. Target Track Setting

7. File Operations

1. Select Card Slot

4. Save

1. Yes

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

5－51

[3] Erasing File (Erase)

Procedures

1) Insert the flash memory card into the card slot.

Flash memory card (option) is necessary.

2) Open the File Operations menu by performing the following

menu operation.

→

3) Left-click the item button of to select a card

slot.

The setting item for Select Card Slot is switched between Slot1 and Slot2.

4) Left-click .

The Erase menu will appear.

Currently saved target ship's track data on the card will be listed.

5) Left-click the button corresponding to the file to be erased.

The Confirmation Window will appear.

6) Left-click to erase the file.

The selected target track data will be erased and the file name will disappear from the list.

2. Target Track Setting

7. File Operations

1. Select Card Slot

5. Erase

1. Yes

5－52

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION

[4] Displaying File (Card Target Track Display)

Procedures

1) Insert the flash memory card into the card slot.

Flash memory card (option) is necessary.

2) Open the File Operations menu by performing the following

menu operation.

→

3) Left-click the item button of to select a card

slot.

The setting item for Select Card Slot is switched between Slot1 and Slot2.

4) Left-click .

The Card T.TRK Display menu will appear.

Currently saved target ship's track data on the card will be listed.

5) Left-click the button corresponding to the file to be displayed.

The Confirmation Window will appear.

6) Left-click to display the T.TRK line.

The selected file will be highlighted, and the currently saved target track data will be

displayed.

Cancel

1) Open the Card T.TRK Display window.

The displayed file is highlighted.

2) Left-click the button corresponding to the displayed file.

The file will be deselected and returned to normal display.

2. Target Track Setting

7. File Operations

1. Select Card Slot

6. Card T.TRK Display

1. Yes

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver)

5－53

5.7 TRIAL MANEUVERING

(Trial Maneuver)

The trial maneuvering is the function of simulating own ship’s course and speed

for collision avoidance when a dangerous target appears. When the own ship's

course and speed are entered in manual mode, the trial maneuvering function

checks if pre-acquired or pre-activated targets are dangerous.

The ranges of course and speed to be entered manually:

• Trial maneuvering is to simulate own ship’s course

and speed in the conditions that the course and

speed of a target ship are unchanged as they are.

As the situation is different from any actual ship

maneuvering, set values with large margins to CPA

Limit and TCPA Limit.

Course: 360° (in 0.1° intervals) ............................................... [EBL] dial

Speed: 0 to 100kn (in 0.1kn step）........................................ [VRM] dial

Attention

5－54

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver)

5.7.1 Trial Maneuvering in the True Vector Mode

In the True Vector mode, calculations are performed according to the values set

by Trial Speed, Trial Course and other features, and the result is displayed as a

bold-line that represents the change of own ship's vector as shown in the Fig 5-7

below (an example of the course changed to the right).

In this Fig 5-7, the dangerous target forward left becomes safe as a result of

simulation.

The tracked target information indicates the current CPA and TCPA values

regardless of the result of simulation.

Fig 5-7: True Vector Mode

Dangerous target

Change of symbol

as a result of

trial maneuver

TRIAL

NORMAL

Route

Own ship’s vector

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver)

5－55

5.7.2 Trial Maneuvering in the Relative Vector Mode

The result of Trial maneuvering in the Relative Vector mode is shown by a

change in target vector. In the Fig 5-8 below (in the same conditions as in the True

Vector mode in the previous page), it is seen that the acquired target is a

dangerous one because its vector is crossing the CPA RING.

Fig 5-8: Relative Vector Mode

The above Fig 5-8 shows that the relative vector of the target has changed as

shown in the figure as a result of simulation (course and speed), so that the

symbol color is changed into “White”, a safe target.

Irrespective of the simulation results, the current CPA and TCPA values are shown

in the tracked target information just like when the true vector mode is active.

The course change of own ship is displayed as a dotted-line.

Better information is provided by using relative motion and sea stabilization.

CPA Ring

Change of symbol

as a result of

trial maneuver

TRIAL

NORMAL

Dangerous target

CPA Ring

5－56

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver)

5.7.3 Operation of Trial Maneuvering Function

Procedures

1) Open the Trial Maneuver menu by performing the following menu

operation.

→

2) Left-click the item button of .

The Trial Function will be set to on or off.

When Trial Function is set to on, the character " T " indicating trial maneuvering blinks in

the own ship display field of the radar display.

3) Set values for Course by turning the [EBL] dial, and for Speed by

turning the [VRM] dial.

4) Set other characteristics.

For inputs to the value input screen, refer to Section 3.3.4.2 "Directly entering a numeric

value".

Dangerous target symbols are displayed in red and safe target symbols in white.

: The trial maneuvering function is turned on.

: The trial maneuvering function is turned off.

: Vector time (1 to 60 min)

: Time until trial maneuvering is started (0 to 30 min)

: Dynamic trait of the own ship

→ : Range from when steered to when the ship

beings to turn (0 to 2000 m)

→ : Turning radius (0.10 to 2.00 nm)

→ : Acceleration (0.0 to 100 knots/min)

→ : Deceleration (0.0 to 100 knots/min)

Vector Time is valid only when Trial Function is set to on. If it is off, the vector time

before trial maneuvering is displayed.

Time until the start of trial maneuvering is counted down immediately after the input.

The acceleration and deceleration are influenced depending on the relationship

between the current speed and the input speed for trial maneuvering.

If 0.0 kn/min is set for Acceleration when the speed for trial maneuvering is faster

than the current speed, or for Deceleration when the speed for trial maneuvering is

slower than the current speed, the system performs simulation on the assumption

that the speed is changed immediately after the time set for Time to Maneuver .

3. Trial Maneuver

1. Trial Function

Off

Vector Time

Time to Maneuver

Own Ship Dynamic Trait

Reach

Turn Radius

Acceleration

Decceleration

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver)

5－57

Cancel

1) Open the Trial Maneuver menu by performing the following

menu operation.

→

2) Left-click the item button of .

The Trial Function will be set to on or off.

：The Trial Function will be set to off.

3. Trial Maneuver

1. Trial Function

Off

5－58

JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver)

TRUE AND FALSE ECHOES ON DISPLAY

6.1 RADAR WAVE WITH THE HORIZON ...................................................6-1

6.2 STRENGTH OF REFLECTION FROM THE TARGET ...........................6-3

6.3 SEA CLUTTER AND RAIN AND SNOW CLUTTER ..............................6-5

6.4 FALSE ECHOES ....................................................................................6-9

6.5 DISPLAY OF RADAR TRANSPONDER (SART) ................................6-12

SECTION 6

TRUE AND FALSE ECHOES ON DISPLAY

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.1 RADAR WAVE WITH THE HORIZON

6－1

The radar operator has a role of interpreting the radar displays to provide his best

aid in maneuvering the ship. For this purpose, the operator has to observe the

radar displays after fully understanding the advantages and disadvantages that the

radar has. For better interpretation of radar display, it is important to gain more

experiences by operating the radar equipment in fair weathers and comparing the

target ships watched with the naked eyes and their echoes on the radar display.

The radar is mainly used to monitor the courses of own ship and other ships in

open seas, to check buoys and other nautical marks when entering a port, to

measure own ship’s position in the coastal waters relative to the bearings and

ranges of the shore or islands using a chart, and to monitor the position and

movement of a heavy rain if it appears on the radar display.

Various types of radar display will be explained below.

6.1 RADAR WAVE WITH THE HORIZON

Radar beam radiation has the nature of propagating nearly along the curved

surface of the earth. The propagation varies with the property of the air layer

through which the radar beam propagates. In the normal propagation, the distance

(D) of the radar wave to the horizon is approximately 10% longer than the

distance to the optical horizon. The distance (D) is given by the following

formula:

[NM]

: Height (m) of radar scanner above sea level

: Height (m) of a target above sea level

Fig 6-2 is a diagram for determining the maximum detection range of a target that

is limited by the curve of the earth surface in the normal propagation.

Fig 6-1: RADAR wave with the horizon

2.23

+()=

Earth

Radar Targets

6－2

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.1 RADAR WAVE WITH THE HORIZON

Fig 6-2: Maximum detection range of a target

When the height of own ship’s scanner is 10 m for instance,

i. A target that can be detected at the radar range of 64 nm on the radar display

is required to have a height of 660 m or more.

ii. If the height of a target is 10 m, the radar range has to be approx. 15 nm.

However, the maximum radar range at which a target can be detected on the

radar display depends upon the size of the target and the weather conditions,

that is, the radar range may increase or decrease depending upon those

conditions.

Height of RADAR Scanner Detective Range Height of Target

D[NM]

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.2 STRENGTH OF REFLECTION FROM THE

TARGET

6－3

6.2 STRENGTH OF REFLECTION FROM

THE TARGET

The signal intensity reflected from a target depends not only on the height and size

of the target but also on its material and shape. The echo intensity from a higher

and larger target is not always higher in general.

In particular, the echo from a coast line is affected by the geographic conditions of

the coast. If the coast has a very gentle slop, the echo from a mountain of the

inland appears on the radar display.(Fig 6-3) Therefore, the distance to the coast

line should be measured carefully.

Fig 6-3: Sea shore line which is not displayed

Table 6-1 shows the graph indicating the relation between the target detection

distance and the radar reflection cross-sectional area (RCS) with regard to the type

and the height of the target in a situation in which the weather is good, the sea

state is calm and the radio wave propagation is normal. As revealed by this table,

even on the same sea shore line, detection distance greatly differs depending on

the height of the target from the surface of the sea. Furthermore, because the

target detection distance is greatly influenced by the shape and material of the

target and environmental conditions, such as the sea state, weather, and radio

wave propagation, caution should be taken when detecting distance of target.

Mountain displayed

on the radar display

Sea shore line not displayed

6－4

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.2 STRENGTH OF REFLECTION FROM THE

TARGET

Table 6-1： Relation between type and height of target and detection distance and RCS

Type of target Height from

sea surface

(m)

Detection distance

(NM)

RCS

X band S band X band S band

Sea shore line 60 20 20 50,000 50,000

Sea shore line 6 8 8 5000 5000

Sea shore line 3 6 6 2500 2500

SOLAS target ship (>5000GT) 10 11 11 50,000 30,000

SOLAS target ship (>500GT) 5 8 8 1800 1000

Small boat with IMO standard

compatible radar reflector

45.03.77,50,5

Marine buoy with corner

reflector

3,5 4.9 3.6 10 1

Standard marine buoy 3,5 4.6 3.0 5 0,5

10-meter small boat without

radar reflector

23.43.02,51,4

Waterway location beacon 1 2.0 1.0 1 0,1

Detection distance shown in the above table may greatly

decrease depending on the shape of the target, sea state,

weather and radio wave propagation conditions.

[]

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.3 SEA CLUTTER AND RAIN AND SNOW

CLUTTER

6－5

6.3 SEA CLUTTER AND RAIN AND SNOW

CLUTTER

In addition to the echo required for observing ships and land, radar video image

also includes unnecessary echo, such as reflection from waves on the sea surface

and reflection from rain and snow. Reflection from the sea surface is called "sea

clutter," and reflection from rain and snow is called "rain and snow clutter," and

those spurious waves must be eliminated by the clutter rejection function.

a. Sea clutter

Sea clutter appears as an image radiating outwardly from the center of the radar

display and changing depending on the size and the shape of waves. Generally, as

waves become larger, image level of the sea clutter is intensified and the clutter

far away is also displayed. When waves are large and the sea clutter level is high,

it is difficult to distinguish sea clutter from a small boat whose reflection intensity

is weak. Accordingly, it is necessary to properly adjust the sea clutter rejection

function. Table 6-2 shows the relation between the sea state (SS) showing the size

of waves generated by wind and the radar's detection probability.

Table 6-2： Sea state and probability of target detection

S band radar (probability to detect a target at a distance of 0.4 NM)

RCS SS1～2SS2～3SS3～4SS4～5

0.1m2 Vi

i. V: Detection probability of 80 %

V-Mii

ii. M: Detection probability of 50 %

M-NViii

iii. NV: Detection probability of less than 50 %

0.5 m2 V V V-M M-NV

1 m2VVVV-M

X band radar (probability to detect a target at a distance of 0.7 NM)

RCS SS1～2SS2～3SS3～4SS4～5

1m2 V-M M-NV

5 m2 V V-M M-NV

10 m2VVVV-M

6－6

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.3 SEA CLUTTER AND RAIN AND SNOW

CLUTTER

As shown in Table 6-2, the number of SS increases as the wind speed becomes

high and the waves become large. Table 6.2 reveals that detection probability

decreases from V (80 %) to NV (less than 50 %) as the number of SS increases.

Therefore, even if the sea state is calm and a target clearly appears on the radar

display, when the sea state becomes rough, target detection probability decreases

resulting in difficulty of target detection by the radar.

For example, in the case of a standard marine buoy, RCS of X band radar is 5 m2

as shown in Table 6-1. When observing such a target in the sea state (SS3) in

which significant wave height exceeds 1.2 meters, detection probability is M-NV,

as shown in Table 6-2, which indicates 50 % or less.

b. Rain and snow clutter

Rain and snow clutter is a video image that appears in a location where rain or

snow is falling. The image changes according to the amount of rain (or the

amount of snowfall). As precipitation increases, the image of rain and snow

clutter becomes intensified on the radar display, and in the case of localized heavy

rain, an image similar to the image indicating land is displayed in some cases.

Furthermore, because radio waves tend to attenuate due to rain and snow, the

ability to detect a target in the rain and snow clutter or a target beyond the rain and

snow clutter may decrease. The amount of attenuation depends on the

transmission frequency, antenna beam width, and the pulse length. Fig 6-4 and

Fig 6-5 show examples in which detection distance is reduced due to the influence

of precipitation. Because of this, a target, which clearly appeared up to 10 NM by

an X band radar (pulse width of 0.8μs) when it was not raining, may become

dimly visible up to 5 NM when the amount of rain becomes 4 millimeters per

hour. Furthermore, when comparing the X band radar with the S band radar,

target detection distance decreases less when an S band radar is used, which

means it is influenced less by precipitation.

Table 6-3： Relation between Douglas sea state and average wind speed and significant

wave height

Sea state Average wind

speed (kn)

Significant wave

height (m)i

i. Significant wave height: an average of top N/3 higher waves when

the number of waves detected within a constant time duration is N

0<4<0,2

15-70,6

27-110,9

3 12-16 1,2

4 17-19 2,0

5 20-25 3,0

6 26-33 4,0

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.3 SEA CLUTTER AND RAIN AND SNOW

CLUTTER

6－7

81012 14 16

降

雨

時

の

検

出

距

離

(NM)

雨の降っていないときの検出距離(NM)

16mm/hr の降雨時パルス幅 0.05us

4mm/hr の降雨時パルス幅 0.05us

16mm/hr の降雨時パルス幅 0.8us

4mm/hr の降雨時パルス幅 0.8us

Detection distance while it is not rainning[NM]

Detection distance while it is raining [NM]

Pre cip it at io n of 16 mm/hr Pulse width 0.8us

Pre cip it at io n of 4 mm/hr Pulse width 0.8us

Pre cip it at io n of 4 mm/hr Pulse width 0.05us

Pre cip it at io n of 16 mm/hr Pulse width 0.05us

Fig 6-4: Decreased target detection distance by S band radar due to

precipitation

024

6810 12 14 16

降

雨

時

の

検

出

距

離

(NM)

16mm/hr の降雨時パルス幅 0.05us

4mm/hr の降雨時パルス幅 0.05us

16mm/hr の降雨時パルス幅 0.8us

4mm/hr の降雨時パルス幅 0.8us

雨の降っていないときの検出距離(NM)

Detection distance while it is not rainning[NM]

Detection distance while it is raining [NM]

Pr e cipit a tion of 16 mm /hr Pulse width 0.8us

Pr e cipit a tion of 4 mm /hr Pulse width 0. 8us

Pr e cipit a tion of 4 mm /hr Pulse width 0. 05us

Pr e cipit a tion of 16 mm /hr Pulse width 0.05us

Fig 6-5: Decreased target detection distance by X band radar due to

precipitation

6－8

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.3 SEA CLUTTER AND RAIN AND SNOW

CLUTTER

c. Coping with sea clutter and rain and snow clutter

When the weather is bad and the ocean is rough, the use of an S band radar is

effective because the radar is not influenced by sea clutter so much and

attenuation due to rain drops is small. When an X band radar is used, reducing the

pulse width will reduce the influence by spurious waves, and also the spurious

wave rejection function effectively works; therefore, the use of short pulse is

effective when the weather is bad. By using image processing functions PROCl 1

to 3, it is expected that spurious waves are further suppressed. Since optimal

settings for those items can be automatically made by using the function mode, it

is recommended that STORM or RAIN be used by selecting the function mode

when the weather is bad. For details of the function mode, see Section 3.9 "USE

FUNCTION KEY [USER]".

However, these functions may make some targets invisible, particularly targets

with higher speeds.

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.4 FALSE ECHOES

6－9

6.4 FALSE ECHOES

The radar observer may be embarrassed with some echoes that do not exist

actually. These false echoes appear by the following causes that are well known:

a. Shadow

When the radar scanner is installed near a funnel or mast, the echo of a target that

exists in the direction of the funnel or mast cannot appear on the radar display

because the radar beam is reflected on the funnel or mast. Whether there are some

false echoes due to shadows can be checked monitoring the sea clutter returns, in

which there may be a part of weak or no returns.

Such shadows appear always in the same directions, which the operator should

have in mind in radar operation.

b. Side Lobe Effect

A broken-line circular arc may appear at the same range as the main lobe of the

radar beam on the radar display. This type of false echo can easily be

discriminated when a target echo appears isolated. (see Fig 6-6)

Fig 6-6: False echo

6－10

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.4 FALSE ECHOES

c. False Echo by Secondary Reflection

When a target exists near own ship, two echoes from the single target may appear

on the radar display.

One of those echoes is the direct echo return from the target and the other is the

secondary reflection return from a mast or funnel that stands in the same direction

as shown in Fig 6-7.

Fig 6-7: False echo by secondary reflection

d. False Echo by Multiple Reflection

When there is a large structure or ship with a high vertical surface near own ship

as shown in Fig 6-8, multiple refection returns may appear on the radar display.

These echoes appear in the same intervals, of which the nearest echo is the true

echo of the target.

Fig 6-8: False echo by mutiple reflection

e. Second Time Echoes

The maximum radar detection range depends upon the height of the scanner and

the height of a target as described in the Section 6.1 "RADAR WAVE WITH THE

HORIZON". If a so-called “duct” occurs on the sea surface due to a certain

weather condition, however, the radar beam may propagate to a abnormally long

distance, at which a target may be detected by the radar.

Radar

scanner

Funnel

Direct microwave

Secondary reflection

of microwave

Actual target

False echo from funnel

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.4 FALSE ECHOES

6－11

For instance, assuming that the pulse length is MP3 (on the repetition frequency

of 1400 Hz), the first pulse is reflected from a target at about 58 NM or more and

received during the next pulse repetition time. In this case, a false echo (second

time echo) appears at a position that is about 58 NM shorter than the actual

distance. If the false echo appears at 5 NM on the radar display, the true distance

of the target is 5+58=63 NM. On the pulse length is SP1 (on the repetition

frequency of 2250 Hz), a false echo may appear at a position that is about 36 NM

shorter than the actual distance.

This type of false echo can be discriminated by changing over the range scale (the

repetition frequency), because the distance of the target changes accordingly.

If second time echo is appeared, the use of Economy mode in PRF menu is

effective. Otherwise, Stagger Trigger menu set to on. (See Section 3.8.3 "Set

Scanner Unit (TXRX Setting)").

f. Radar Interference

When another radar equipment using the same frequency band as that on own ship

is near own ship, a radar interference pattern may appear on the radar display.

This interference pattern consists of a number of spots which appear in various

forms. In many cases, these spots do not always appear at the same places, so that

they can be discriminated from the target echoes. (See Fig 6-9)

Fig 6-9: Radar interference

If radar equipment causing an interference pattern and this radar are of the same

model, their transmitting repetition frequency is nearly the same. As a result,

interference patterns may be displayed concentrically.

In this case, the interference patterns cannot be eliminated by using only the

interference reflector function, so ine-tune the transmitting repetition frequency.(

See Section 3.8.3 "Set Scanner Unit (TXRX Setting)")

An interference suppressing effect can be heightened by applying a different

transmitting repetition frequency to the interference pattern source radar and this

radar.

HL HL

6－12

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.5 DISPLAY OF RADAR TRANSPONDER (SART)

6.5 DISPLAY OF RADAR

TRANSPONDER (SART)

The SART (Search and rescue Radar Transponder) is a survival device authorized

by the GMDSS (Global Maritime Distress and Safety System), which is used for

locating survivors in case that a distress accident occurs at sea. The SART is

designed to operate in the 9 GHz frequency band.

When receiving the 9 GHz radar signal (interrogating signal) transmitted from the

radar equipment on a rescue ship or search aircraft, the SART transmit a series of

response signals to inform the distress position to the rescue and search party.

Procedures

1) Press [RANGE +] or [RANGE -] key to set the radar range to 6 NM

or 12 NM.

2) Set the SART display mode according to the procedures below.

　　 →　

With the SART display mode set to ON, settings as shown below are made automatically.

This radar provides a shortcut item to make settings for SART

signal reception. Execution of this item automatically switches

to the setting for SART reception.It also functions for detect the

beacon or target enhancer.

：SART ON

：SART OFF

Sea clutter control : Minimum (Most counterclockwise)

AUTO SEA function : OFF

Rain and Snow Clutter Control (RAIN) : Minimum

Auto Rain and Snow Clutter function

(AUTO RAIN)

:OFF

TUNE control : No tuning (to weaken clutter

echoes)

Interference rejection (IR) : OFF

PROCESS : OFF

Main

3. RADAR Menu

1. Process Setting

9. SART

Off

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.5 DISPLAY OF RADAR TRANSPONDER (SART)

6－13

[Example of Display］

• When the SART function is set to ON, small targets around own

ship will disappear from the radar display. So it is necessary to

exercise full surveillance over the conditions around own ship by

visual watch in order to avoid any collision or stranding.

If two or more sets of radar equipment are installed on own ship,

use one set of 9 GHz band radar for detection of the SART signal

and operate others as normal radars for avoiding collision,

monitoring targets around own ship, and checking on own ship’

s position and avoidance of stranding.

After end of detecting the START signal, turn the START display

off. Then the radar returns normally to the nautical mode.

Other Ships

Land

SART code

Position of

SART

Attention

6－14

JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.5 DISPLAY OF RADAR TRANSPONDER (SART)

SETTINGS FOR SYSTEM OPERATION

7.1 SETTINGS AT INSTALLATION .............................................................7-1

7.1.1 How to Open the Serviceman Menu（Service Man Menu） .........7-1

7.1.2 GYRO I/F Setting .............................................................................7-2

7.1.3 Tuning (Tune Adjustment) .............................................................7-5

7.1.4 Bearing Adjustment ........................................................................7-7

7.1.5 Range Adjustment ...........................................................................7-7

7.1.6 Navigator Setting (Device) .............................................................7-8

7.1.7 Setting of True Bearing Value ........................................................7-9

7.1.8 Antenna Height Setting (Antenna Height) .....................................7-9

7.1.9 Setting of CCRP (CCRP Setting) ..................................................7-10

7.2 SETTINGS ............................................................................................7-12

7.2.1 Communication Port Setting (COM Port Setting) .......................7-12

7.2.2 Sector Blank Setting (Sector Blank) ............................................7-16

7.2.3 TNI Blank Setting (TNI Blank) ......................................................7-17

7.2.4 Setting of Bearing Pulses from Scanner Unit (Output Pulse) ...7-18

7.2.5 Slave Mode Setting (Master/Slave) ..............................................7-19

7.2.6 Language Setting (Language) ......................................................7-20

SECTION 7

SETTINGS FOR SYSTEM OPERATION

7.2.7 Date Time Setting ..........................................................................7-20

7.2.8 Input Installation Information .......................................................7-21

7.2.9 Setting the Alarm System .............................................................7-22

7.3 ADJUSTMENT ......................................................................................7-26

7.3.1 Noise Level Adjustment (Noise Level) ........................................7-26

7.3.2 Adjustment of Target Tracking Function (TT) ............................7-27

7.3.3 Main Bang Suppression Level Adjustment (MBS) .....................7-29

7.3.4 Adjustment of Performance Monitor ...........................................7-31

7.4 MAINTENANCE MENU ........................................................................7-33

7.4.1 Antenna Safety Switch (Safety Switch) .......................................7-33

7.4.2 Initialization of Memory Area(Area Initial) ...................................7-34

7.4.3 Save of Internal Memory Data (Card1/2) .....................................7-35

7.4.4 Restoration of Scanner Unit Operation Time (TXRX Time) ......7-36

7.4.5 Update of Character String Data (String Data Update) .............7-38

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

7－1

7.1 SETTINGS AT INSTALLATION

This section describes the electrical adjustment procedures to be performed by

service engineers during system installation.

The bearing adjustment value is saved to non-volatile memory in the scanner.

Other settings are saviedto non-volatile memory in the radar process unit.

7.1.1 How to Open the Serviceman Menu（Service Man Menu）

Procedures

1) Hold down the button at the

lower right of the display together

with the left key.

The Code Input menu will appear.

2) Left-click the button.

3) Left-click the button.

The Serviceman Menu will appear.

• Do not carry out the adjustments of the equipment

except authorized service persons. If wrong setting is

carried out, this may cause unstable operation.

• Do not carry out the adjustments during navigation.

Otherwise, the radar performance may be affected,

resulting in an accident or trouble.

Fig 7-1: Code Input

Main

ENT

7－2

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

7.1.2 GYRO I/F Setting

a. Gyro Settings (STEP or SYNC)

The GYRO I/F circuit of the system is designed to be compatible with most types

of gyro compasses by simply setting the switches.

Before power-on operation can be performed, the switches S1, S2, S5, S6, S7 and

jumper TB105 on the gyro interface circuit (PC4201) must be set in accordance

with the type of your gyro compass by performing the procedure below.

The switches are factory-set for a gyration ratio of 180X and the step motor type.

Make sure of the type of the gyro compass installed on the own ship before

starting the procedure below.

Procedures

1) Set S5 to "OFF".

The gyro compass and GYRO I/F are breaked off.

2) Set S6 and S7 in accordance with the type of your gyro compass.

There are two types of gyro compasses: one type outputs a step signal, and the other type

outputs a synchro signal. Make sure of the type of the gyro compass installed on the own

ship before setting the switches S6 and S7.

3) Set the DIP switch S1 in accordance with the type of the

compass.

The items to be set are listed below. For the settings, refer to Table 7-1： Gyro and

Log Select Switches (S1 DIP Switch).

Step motor type: DC24V to DC100V

Synchro-motor type: Primary excitation voltage 50 to 115 VAC

Synchro signal: Set the switches to [SYNC].

Step signal: Set the switches to [STEP].

S1-1: Type of gyro signal (step/synchro)

S1-2/3: Gyration ratio of gyro compass

S1-4: Gyration direction of gyro compass

S1-5: Type of log signal (pulse/synchro)

S1-7/8: Ratio of log signal

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

7－3

4) Set the DIP switch S2.

The items to be set are listed below. For the setting, refer to Table 7-2： Gyro and Log Select

Switches (S2 DIP Switch).

5) Confirm the settings of the DIP switch S10.

The DIP switch must be set as shown below. Do not change any of the settings.

6) Set the jumper TB105.

The TB105 is set for using a low-voltage step signal.

7) Connect the gyro signal and log signal cables to the terminal

block.

8) Set S5 to "ON".

The gyro compass and GYRO I/F are connected.

9) After power-on operation, make sure of the radar video and the

operation with the true bearing value.

See the Section 7.1.7 "Setting of True Bearing Value".

10) If the true bearing value of the radar equipment is reversed,

change the setting of the switch S1-4.

１２３４５６７８

ON OFF OFF OFF ON OFF ON OFF

１２３４５６７８

OFFOFFOFFOFFOFFOFFOFFOFF

1-2 connected: Setting for normal use

2-3 connected: Setting for a step signal of 22 V or less

7－4

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

Table 7-1： Gyro and Log Select Switches (S1 DIP Switch)

12345678

GYRO SIG

STEP ON

SYNC OFF

360X OFF OFF

180X ON OFF

90X OFF ON

36X ON ON

DIRECTION REV ON

NOR OFF

LOG SIG

TYPE SYNC ON

PULSE OFF

PULSE/

Don't care OFF

100P／30X ON ON

200P／90X OFF ON

400P／180X ON OFF

800P／360X OFF OFF

Table 7-2： Gyro and Log Select Switches (S2 DIP Switch)

S2 SETTING TABLE 12345678

OTHER SETTING

LOG ALARM ON 　

OFF

GYRO SIMULATOR ON

OFF

LOG SIMULATOR ON

OFF

N.A. Don't care　any

GYRO ALARM TIME 5s ON

0.2s OFF

HEADING SENSOR SOURCE NMEA(HDT/THS) ON

GYRO SIGNAL OFF

NMEA BAUDRATE SETTING 4800 OFF OFF

9600 ON OFF

19200 OFF ON

38400 ON ON

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

7－5

7.1.3 Tuning (Tune Adjustment)

Adjust the tuning control for the transmitter and receiver.

The turning control should be adjusted when the system is installed or when the

magnetron is replaced.

Procedures

1) Set a range of 48 NM or more.

2) Open the Serviceman Menu.

3) Perform the following menu open procedure to open the Tune

Adjustment menu.

　　 →　

4) Adjust the tune adjustment value so that the tune indicator bar at

the upper left of the display is maximized.

For inputs to the value input screen, refer to Section 3.3.4.3 "Increasing or decreasing a

numeric value".

5) Move the cursor onto the button, and left-click .

7.1.3.1 Tune Indicator Adjustment)

Set the scale mark when the tune indicator bar reaches the maximum point.

Procedures

1) Set a range of 48 NM or more.

2) Open the Serviceman Menu.

3) Perform the following menu open procedure to open the Tune

Indicator Adjust menu.

　　 →　

1. Adjust Menu

1. Tune Adjustment

ENT

1. Adjust Menu

4. TXRX Adjustment

3. Tune Indicator Adjust

7－6

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

4) Adjust the tune indicator adjustment value by operating the

/ button so that the tune indicator bar at the upper

left of the display reaches a point of 80 to 90% of the maximum.

For inputs to the value input screen, refer to Section 3.3.4.3 "Increasing or decreasing a

numeric value".

5) Move the cursor onto the button, and left-click .

7.1.3.2 Tune Peak Adjustment

Adjust the tune indicator and echo peak.

Procedures

1) Set a range of 48 NM or more.

2) Open the Serviceman Menu.

3) Perform the following menu open procedure to open the Tune

Peak Adjustment menu.

　　 →　

4) Adjust the tune peak adjustment value by operating the /

button so that the tune indicator bar at the upper left of the

display is maximized.

For inputs to the value input screen, refer to Section 3.3.4.3 "Increasing or decreasing a

numeric value".

5) Move the cursor onto the button, and left-click.

With the NKE-2103 SCANNER UNIT:

For this model, perform Tune Peak Adjustment explained

below. After the above adjustment procedure, perform the

adjustment procedures below.

＋－

ENT

1. Adjust Menu

4. TXRX Adjustment

2. Tune Peak Adjustment

＋

－

ENT

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

7－7

7.1.4 Bearing Adjustment

Make adjustment so that the bearing of the target measured with the ship’s

compass matches the bearing of the target echo on the radar display.

Procedures

1) Select for the bearing presentation. Set video processing

(PROC) to .

2) Measure the bearing of an adequate target (e.g., a ship at anchor,

a breakwater, or a buoy) relative to own ship's heading.

3) Open the Serviceman Menu.

4) Perform the following menu open procedure to open the Bearing

Adjustment menu.

　　 →　

For inputs to the value input screen, refer to Section 3.3.4.3 "Increasing or decreasing a

numeric value".

Make adjustment by the 0.1°.

5) Adjust the bearing adjustment value by operating the /

button so that the target measured in step 2) is adjusted to

the correct bearing.

6) Left-click the button to determine the value.

7.1.5 Range Adjustment

Make adjustment so that the range of a target on the radar display is shown

correctly.

Procedures

1) Search the radar display for a target of which range is already

known.

2) Open the Serviceman Menu.

H Up

PROC Off

1. Adjust Menu

2. Bearing Adjustment

＋

－

ENT

7－8

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

3) Perform the following menu open procedure to open the Range

Adjustment menu.

　　 →　

For inputs to the value input screen, refer to Section 3.3.4.3 "Increasing or decreasing a

numeric value".

4) Adjust the range adjustment value by operating the /

button so that the target measured in step 1) falls in the correct

range.

5) Left-click the button to determine the value.

7.1.6 Navigator Setting (Device)

Determine whether to connect navigators to the radar equipment.

Only the navigators set to ON here can be used.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Device

Installation menu.

　　 →　

3) Select for navigators connected to the radar equipment,

and for navigators not connected.

Gyro：Gyro (via GYRO I/F)

Compass：Compass (Compliant with IEC61162)

GPS Compass：GPS Compass (JRC)

LOG：Log (via GYRO I/F)

2AXW：2-axis log (Speed over water: Compliant with IEC61162)

2AXG：2-axis log (Speed over ground: Compliant with IEC61162)

GPS：GPS (Compliant with IEC61162)

1. Adjust Menu

3. Range Adjustment

＋－

ENT

1. Adjust Menu

9. Next

3. Device Installation

Off

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

7－9

7.1.7 Setting of True Bearing Value

If GYRO I/F is used to input a gyro signal, the true bearing value indicated by the

master gyro does not match the value indicated by the radar equipment only in a

rare case. In this case, perform the following procedure to adjust the true bearing

value of the radar equipment to the value of the master gyro.

Procedures

1) Perform the following menu open procedure to open the true

bearing value setting menu.

　　 →　

2) Input the master gyro value to the value input screen.

For inputs to the value input screen, refer to Section 3.3.4.3 "Increasing or decreasing a

numeric value".

7.1.8 Antenna Height Setting (Antenna Height)

Set the height of radar antenna above sea level. Do not change this setting

carelessly.

Procedures

1) Measure the height of radar antenna above sea level in advance.

2) Open the Serviceman Menu.

3) Perform the following menu open procedure to open the Antenna

Height setting menu.

　　 →　

The Antenna Height menu will open.

4) Select the setting that matches the antenna height measured in

step 1).

Main

6. NAV Equipment Setting

1. Gyro Setting

1. Adjust Menu

4. TXRX Adjustment

1. Antenna Height

7－10

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

7.1.9 Setting of CCRP (CCRP Setting)

Set the own ship's CCRP location, radar antenna installation location, and GPS

installation location.

Procedures

1) Measure the CCRP location, radar antenna location, and GPS

antenna location in advance.

2) Open the Serviceman Menu.

3) Perform the following menu open procedure to open the CCRP

Setting menu.

　　 →　

4) Specify the ship length for Length at the upper right of the CCRP

Setting Menu, and the ship width for Beam.

5) Move the cursor onto the X, Y value, and left-click to

input the CCRP1 location.

When X > 0, the CCRP is on the starboard side of the ship.

When X < 0, it is on the port side.

6) To input the second CCRP, click the button to display the

CCRP2 X,Y value, and input the value in the same manner for

step 5).

Similarly, input the third and subsequent CCRPs.

7) Repeat the above steps to input the GPS location(s) and radar

antenna location(s).

8) If multiple CCRP locations and GPS locations are input, select

the CCRP location and GPS location to be used by pressing the

buttons at the upper left of the menu.

9) Click the to close the CCRP Setting menu.

CCRP：Up to four locations can be input. (One location selected when used)

Radar antenna: Up to eight radar antennas can be input. (Automatically selected in

response to ISW operation)

GPS：Up to four locations can be input. (One location selected when used)

2. Installation Menu

4. CCRP Setting

CCRP1

CCRP2

0.Exit

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION

7－11

Length 300m

Beam 30m

RADAR Antenna1

X 0m, Y 15m

GPS1

X -10m, Y 30m

RADAR Antenna2

X 5m, Y 250m

30m

250 m

15m

10m

25m

CCRP1

X 0m, Y 25m

Example:

7－12

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7.2 SETTINGS

This section describes the electrical adjustment procedures to be performed by

service engineers during system installation.

7.2.1 Communication Port Setting (COM Port Setting)

External sensor signals are input to the radar equipment through a communication

port. The radar equipment has ten communication ports. For signals to be input

from sensors or to be output to the sensors, communication ports need to be set in

accordance with the sensors.

7.2.1.1 Baud Rate Setting (Baud Rate)

Set the baud rate of the signal to be input to the COM port.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Baud

Rate setting menu.

　　 →　

• Do not carry out the adjustments of the equipment

except authorized service persons. If wrong setting is

carried out, this may cause unstable operation.

• Do not carry out the adjustments during navigation.

Otherwise, the radar performance may be affected,

resulting in an accident or trouble.

2. Installation Menu

5. COM Port Setting

1. Baud Rate

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7－13

3) Set the baud rate of the port to be set.

7.2.1.2 Reception Port Setting(RX Port)

Set the numbers of ports for receiving signals from sensors.

There are two methods for receiving signals: specifying a port for each sensor, or

using the automatic recognition function without specifying ports.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the RX Port

setting menu.

　　 →　

3) Set a port for each sensor.

1. COMPASSa：

a. The compass port is a receive-only port that is dedicated to COMPASS signals.

4800(NMEA)/9600(NSK)/38400(fast NMEA)b bps

b. The bold values are factory-set.

2. MAINTENANCE/LOG：1200/4800/9600/38400 bps

3. NAV1：1200/4800/9600/38400 bps

4. NAV2：1200/4800/9600/38400 bps

5. ALARM：1200/4800/9600/38400 bps

6. JARPAc：

c. The JARPA port is a transmit-only port that is dedicated to JRC ARPA signals.

1200/4800/9600/38400 bps

7. AIS：1200/4800/9600/38400 bps

8. ARPAd：

d. The ARPA port is a transmit-only port.

1200/4800/9600/38400 bps

9. COM：1200/4800/9600/38400/115200 bps

Settable sensor

signals

GPS、DLOG、Alarm、Depth、Temperature、Wind、Current、

ROT、RSA

Selectable ports When the automatic recognition

function is used:

AUTO

When ports are specified: LOG、NAV1、NAV2、

ALARM、ARPA、COM

2. Installation Menu

5. COM Port Setting

2. RX Port

7－14

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7.2.1.3 Reception Sentence Setting (RX Sentence)

Set signal sentences to be received from sensors.

The system is factory-set for using all sentences. To receive only specified

sentences, select for sentences which are not necessary.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the RX

Sentence setting menu.

　　 →　

3) Select the sentences to be used by the sensors to be set.

Selection value: or can be set for each sentence.

1. GPS(LL/COG/SOG)：GGA/RMC/RMA/GNS/GLL/VTG

2. GPS(WPT/Time)：GGA/RMC/RMB/BWC/BWR/ZDA

3. Depth：DPT/DBK/DBT/DBS

4. Wind：MWV/MWD

5. Current：

→Data Set Number：0-9. Set the number of the sentence to be used by Data

Set Number. (Initial value 0)

→Layer A：Set the number of the sentence to be used with layer A

by Layer Number. (Initial value 3)

→Layer B：Set the number of the sentence to be used with layer B

by Layer Number. (Initial value 4)

→Layer C：Set the number of the sentence to be used with layer C

by Layer Number. (Initial value 5)

No Use

2. Installation Menu

5. COM Port Setting

3. RX Sentence

Use

No Use

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7－15

7.2.1.4 Transmission Port Setting (TX Port)

For each sentence, set a communication port through which signals are

transmitted to sensors.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the TX Port

setting menu

　　 →　

3) Select the communication port through which the sentence to be

set is output.

4) Select the output format, talker, and transmission interval.

Signals for which the above items can be set:

Settable sentences TTM(TT)、TLL(TT)、TTD(TT)、TLB(TT)、OSD、RSD、ALR、

ACK、TTM(AIS)、TLL(AIS)、TTD(AIS)、TLB(AIS)、

RemoteMaintenance、JRC-ARPA、APB、BOD、GGA、GLL、

RMC、RMB、VTG、XTE、BWC、HDT、THS

Selectable ports MAINTENANCE、NAV1、NAV2、ALARM、JARPA、ARPA、

COM

Item Name Option

NMEA0183

Output Format

APB, BOD, GGA,

GLL, RMC, RMB,

VTG, XTE,　BWC,

HDT

V1.5

V2.0

V2.3a

a. The bold values are factory-set.

NMEA0183

Talkerb

b. For TTM, TLL, OSD, RSD, and ALR, the talker is always RA .

For GGA, GLL, RMC, and VTG, the talker is always GP.

APB, BOD,RMB,

XTE, BWC, HDT,

THS

STANDARD：The talker is RA .

GP：The talker is GP.

NMEA0183 TX

Interval

APB, BOD, GGA,

GLL, RMC, RMB,

VTG, XTE, BWC,

HDT, THS

Set an interval in the range 1 to 9 seconds.

2. Installation Menu

5. COM Port Setting

4. TX Port

7－16

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7.2.2 Sector Blank Setting (Sector Blank)

In order not to display radar echoes, set a sector range and stop transmission in the

bearing range. Three types of sectors can be created.

The sector blank function operates in the relative bearing with the bow as the

benchmark.

7.2.2.1 Sector Blank Function On/Off (Sector1,2 and 3)

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Sector

Blank setting menu.

　　 →　

3) Set the sector blank number , , or with

which the sector blank function operates.

The system allows the use of up to three sector blank areas.

Set each sector blank area to on or off.

7.2.2.2 Sector Blank Area Creation (Make Sector 1,2,3)

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Sector

Blank setting menu.

　　 →　

3) Select the sector blank number ( to ) for

sector creation, and click the Make Sector button in the menu.

The selected sector blank will be made.

: The sector blank function of the number is operated.

: The sector blank function of the number is stopped.

2. Installation Menu

3. Sector Blank

Sector 1 Sector 2 Sector 3

Off

2. Installation Menu

3. Sector Blank

Make Sector 1 Make Sector 3

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7－17

4) Set the starting azimuth of the sector blank by operating the

[EBL] dial, and left-click the button.

The start angle of the sector blank will be set.

5) Set the ending azimuth of the sector blank by operating the [EBL]

dial, and left-click the button.

The end angle of the sector blank will be set.

7.2.3 TNI Blank Setting (TNI Blank)

Set a sector range and stop tuning operation in the bearing range.

If a structure such as the mast is close to the radar antenna, automatic tuning

operation may become unstable. In this case, set a TNI blank in the direction of

the structure in order to stabilize the tuning operation.

Only one type of a sector can be created. The TNI blank function operates in the

relative bearing with the bow as the benchmark.

7.2.3.1 TNI Blank Function On/Off (Sector)

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the TNI

Blank setting menu.

　　 →　

3) Select the item in the menu, and turn on or off the TNI

blank function.

7.2.3.2 TNI Blank Area Creation (Make Sector)

Procedures

1) Open the Serviceman Menu.

: The TNI blank function is operated.

: The TNI blank function is stopped.

ENT

2. Installation Menu

9. Next

2. TNI Blank

1. TNI Blank

Off

7－18

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

2) Perform the following menu open procedure to open the Sector

Blank setting menu.

　　 →　

3) Left-click the button in the menu.

The selected sector blank will be made.

4) Set the starting azimuth of the TNI blank by operating the [EBL]

dial, and left-click the button.

The start angle of the TNI blank will be set.

5) Set the ending azimuth of the TNI blank by operating the [EBL]

dial, and left-click the button.

The end angle of the TNI blank will be set.

7.2.4 Setting of Bearing Pulses from Scanner Unit (Output Pulse)

Set the output value of bearing pulses from the scanner unit. The system can set

2048 pulses or 4096 pulses. This setting is enabled only when the scanner unit of

25 or 30 kW is used.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Output

Pulse setting menu.

　　 →　

3) Set the number of pulses to be output by the scanner unit.

a. If a 10 kW antenna is used, 2048 is always set.

:2048 pulses per antenna rotation (Recommended value)

:4096 pulses per antenna rotation

2. Installation Menu

9. Next

2. TNI Blank

2. Make Sector

ENT

1. Adjust Menu

4. TXRX Adjustment

6. Output Pulse

2048

4096

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7－19

7.2.5 Slave Mode Setting (Master/Slave)

Place the system in the Slave mode when it is to be operated as the sub-display

that displays radar echoes by using radar signals from other radar equipment.

The input value of externally input bearing pulses can be set. The system can set

2048 pulses or 4096 pulses.

7.2.5.1 Slave Mode Setting (Master/Slave)

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the

installation setting menu.

3) Select Slave for the item in the menu.

7.2.5.2 Setting of Input Bearing Pulse (Input BP Pulse)

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the second

page of the installation setting menu.

→

3) Set the number of pulses for the item in the

menu.

:The system operates as radar equipment while the own

antenna is connected.

:The system operates as a sub-display while the signal

cable of other radar equipment is connected.

：2048 pulses per antenna rotation

：4096 pulses per antenna rotation

2. Installation Menu

2. Master Slave

Master

Slave

2. Installation Menu

9. Next

1. Input BP Count

2048

4096

7－20

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7.2.6 Language Setting (Language)

The system is designed to switch between display languages, Japanese and

English.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the

language setting menu.

→

3) Select the language to be used.

7.2.7 Date Time Setting

To display time, the local time, local date, and time-zone difference must be set.

However, if the "ZDA" sentence of NMEA0183 is received, time can be

automatically displayed.

Procedures

1) Perform the following menu open procedure to open the

language setting menu.

→

The Date Time Setting menu will open.

2) Set information about date and time

2)-1. UTC/LMT (Time display system)

a. Other is an option to display character strings created by our overseas agents.

Ask the overseas agent or our sales department if your language is supported. To

determine the selected language, turn the power off, and then turn it on.

: Universal Time Coordinate

: Local Mean Time

2. Installation Menu

8. Language

1. English

2. Japanese

3. Other

Main

7. Sub Menu

6. Date Time Setting

UTC

LMT

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7－21

2)-2. LMT Date

Input the date in local time.

2)-3. LMT Time

Input the date in local time.

2)-4. Time Zone

Input the time-zone difference between the universal time and local time.

2)-5. Display Style

2)-6. Synchronize with GPS

7.2.8 Input Installation Information

The system can input installation information.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the

language setting menu.

→

3) Input the installation information.

For the input method on the numeric value and character input screens, see Section 3.3.4

"Operation on Numeric Value, Latitude / Longitude and Character Input menu".

Set one of the following date display formats.

例：2007-12-31

例：DEC 31, 2007

例：31 DEC, 2007

A ZDA sentence sent by the GPS is used, thereby displaying time

synchronized with the GPS time.

a：

a. If On is selected for this item but a ZDA sentence is not input, the system

internal clock function is used to display the date and time.

Time synchronized with the GPS time

：Time not synchronized with the GPS time

Input the date of installed system.

Input the name of installation personel.

Input the name of radar installer.

YYYY-MM-DD

MMM DD, YYYY

DD MMM, YYYY

Off

Main

1. Installation Information

Date

Name

Company

7－22

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7.2.9 Setting the Alarm System

7.2.9.1 Setting the reset interval (Reset Interval)

This function enables the control of WMRST terminal (on the terminal board

circuit).The reset signal is turned on when operation in a set period of time.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Reset

Interval menu.

→

3) Input the value to be set.

For how to input numeric data on the numeric value input screen, see Section 3.3.4

"Operation on Numeric Value, Latitude / Longitude and Character Input menu".

7.2.9.2 Setting the Trackball Threshold

This function enables the control of WMRST terminal (on the terminal board

circuit).

The reset signal is turned off when trackball is moved, that caused by vibration.If

trackball move distance go over the threshold (dot unit) when reset signal is

turned on.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the

Trackball Threshold menu.

→

3) Input the value to be set.

For how to input numeric data on the numeric value input screen, see Section 3.3.4

"Operation on Numeric Value, Latitude / Longitude and Character Input menu".

2. Installation Menu

6. Alarm System

1. Watch Alarm

1. Reset Interval

2. Installation Menu

6. Alarm System

1. Watch Alarm

2. Trackball Threshold

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7－23

7.2.9.3 Setting the relay output (Relay Output)

This function enables the control of ARPAALM terminal (on the terminal board

circuit).

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Relay

Output menu.

→

3) Left-click the button in the menu.

The Relay Output mode is switched.

4) Click the item button corresponding to the item to be changed.

The item can be turned on / off.

7.2.9.4 Setting the ALR output (ALR Output)

This function enables the control of ALR port (See Section 7.2.1 "Communication

Port Setting (COM Port Setting)").

Procedures

1) Open the Serviceman Menu.

: The output is continuously controlled.

: The output is intermittenly controlled.

: The relay output is turned on when alarm have issued.

: The relay output is not turned on when alarm have issued.

: There is a dangerous target. (tracked target)

: There is a dangerous target. (AIS target)

: A new target is acquired in the automatic acquisition zone.

: There is a lost target. (Target Tracking / AIS).

2. Installation Menu

6. Alarm System

2. Relay Output

1. Relay Output Mode

Continuous

Intermittent

Off

2. TT CPA/TCPA

3. AIS CPA/TCPA

4. New Target

5. Lost

7－24

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

2) Perform the following menu open procedure to open the ALR

Output menu.

→

3) Click the item button corresponding to the item to be changed.

The item is turned on / off.

7.2.9.5 Setting the External Acknowledgement (External ACK Setting)

This function enables the control of system when ACK sentence have received.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the External

ACK Setting menu.

→

3) Click the item button corresponding to the menu to be changed.

: The ALR sentence is output when alarm have issued.

: The ALR sentence is not output when alarm have issued.

: The internal alarm.

: Target Tracking Alarms and AIS Function Alarms.

：CPA/TCPA alarm.

：Exept Critical Alarm.

2. Installation Menu

6. Alarm System

2. Relay Output

Off

1. System Alarm

2. TT/AIS Alarm

2. Installation Menu

6. Alarm System

5. External ACK Setting

Critical Alarm

Normal Alarm

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS

7－25

4) Click the item button corresponding to the item to be changed.

The item is switched.

7.2.9.6 Setting the Alarm Buzzer (Sound Output Mode)

This function enables the control of alarm buzzer.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the External

ACK Setting menu.

→

3) Select the function to be used.

, and

Setting and Ararm Function

①: Followed by Buzzer Volume menu setting.

②: Alarm Buzzer is turned off.

③: If Relay Output menu is turned on when Alam Buzzer is turned off. If Relay Output menu is turned off when Alam

Buzzer is turned on.

　　For how to setting Buzzer Volume menu, see Section 3.8.6 "Adjust Sound Volume (Buzzer Volume)".

: Setting of alarm sound.

→: The alarm sound is not stopped when

acknowridgement have received.

→: The alarm sound is stopped when

acknowridgement have received.

: Setting of alarm indication.

→: The alarm indication brinking is stopped when

acknowridgement have received.

→: The alarm indication brinking is not stopped

when acknowridgement have received.。

: Setting of ALR sentence.

→: Add acknowridgement to ALR sentence.

→: Add no acknowridgement (unrecognized) to ALR

sentence.

Alarm Setting Operation Operation

Miss CPA/　

TCPA

New 　

Target

Lost NAV System ISW

①

①②

①③①②①

Audio

Off

Indication

Lightning

Brinking

Acknowledge State

A;ACK

V;UNACK

2. Installation Menu

6. Alarm System

4. Sound Output Mode

Off 1 Off 2

Off 1

Off 2

7－26

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT

7.3 ADJUSTMENT

This section describes the electrical adjustment procedures to be performed by

service engineers during system installation.

7.3.1 Noise Level Adjustment (Noise Level)

7.3.1.1 Noise Level Adjustment for Signal Processing

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the noise

level adjustment menu.

→

3) Increase/decrease the noise level adjustment value.

The noise level is factory-set. (Initial value: 140)

After system installation, a great change in the noise level adjustment value should be

avoided; it should be fine adjusted within ±5.

Do not carry out the adjustments of the equipment

except authorized service persons. If wrong setting is

carried out, this may cause unstable operation.

Do not carry out the adjustments during navigation.

Otherwise, the radar performance may be affected,

resulting in an accident or trouble.

9. RADAR/TT Initial Setup

1. Signal Processing

1. Echo Noise Level

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT

7－27

7.3.1.2 Noise Level Adjustment Mode (Setting Mode)

A noise level is factory-adjusted while this mode is turned on.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the noise

level adjustment menu.

→

The noise level adjustment mode is switched between on and off.

7.3.2 Adjustment of Target Tracking Function (TT)

7.3.2.1 Vector Constant Adjustment (Vector Constant)

Adjust the vector follow-up performance of the target tracking function.

The vector constant is adjusted to an optimal value, so do not change it carelessly.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Vector

Constant adjustment menu.

Factory-adjustment method

・The noise level adjustment value is once decreased to about 130.

・While the noise level adjustment value is gradually increased, the value

with which radar echoes start turning yellow is determined as the set

value.

・The noise level adjustment mode is turned off when the adjustment is

finished.

Do not change the set value carelessly.

The vector constant shall be set to 5 normally. If the vector

constant value is higher, a target’s vector will be better followed

up when the target and own ship change their course or speed,

but the vector accuracy will be lower on the contrary.

9. RADAR/TT Initial Setup

1. Signal Processing

2. Setting Mode

Attention

7－28

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT

→

The window for setting vector constants will appear.

3) Input the value to be set.

For how to input numeric data on the numeric value input screen, see Section 3.3.4

"Operation on Numeric Value, Latitude / Longitude and Character Input menu".

7.3.2.2 Quantization Level Adjustment (Video TD Level)

Use the target tracking function (TT) to adjust the level of the signal to be

recognized as a target. If a small value is set, even weak target signals will be

input to the target detection circuit of the target tracking function. However, many

unnecessary signals are also input, which may cause unstable target acquisition or

tracking. It is important to set a value four or five greater than the value with

which unnecessary signals are detected.

The quantization level is adjusted to an optimal value, so do not change it

carelessly.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the target

tracking setting menu.

→

3) To change the quantization level of the automatic acquisition

area, specify the item in the menu. To change

the quantization level of tracking and manual acquisition, specify

the item .

4) Input the value to be set.

Do not change the set quantization level carelessly. If

the level deviates from the proper value, the target

acquisition and tracking functions will deteriorate.

Otherwise, this may cause accidents.

9. RADAR/TT Initial Setup

2. TT

1. Vector Constant

9. RADAR/TT Initial Setup

2. TT

2. Video TD Level

3. Video High Level

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT

7－29

7.3.3 Main Bang Suppression Level Adjustment (MBS)

Main Bang Suppression is adjusted to suppress main bang, a reflection signal

from 3D circuit including wave guide tube, that generally appears as a circular

image focusing on the center of the radar display. Optimum adjustment allows

main bang image to remain lightly on the display.

7.3.3.1 Adjustment of Main Bang Suppression Level (MBS Level)

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the MBS

level adjustment menu.

→

3) Set the radar as follows:

•Set the radar range to 0.125 NM.

•Set the radar video enhance function (ENH) to OFF.

•Set the image processing (PROC) to OFF.

•Turn the [RAIN] control to the minimum position (fully to the left).

•Turn the [GAIN] control to the maximum position (fully to the right).

•Turn the [SEA] control to achieve the strength with which main bang can be judged.

4) Adjust the value so that the main bang can be erased.

Do not change this adjusted level carelessly.

Incorrect adjustment may erase targets in point-blank

range and cause collision, resulting in death or serious

injury.

9. RADAR/TT Initial Setup

3. MBS

1. MBS Level

7－30

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT

7.3.3.2 Adjustment of Main Bang Suppression Area (MBS Area)

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the MBS

Area adjustment menu.

→

3) Set the radar as follows:

•Set the radar range to 0.125 NM.

•Set the radar video enhance function (ENH) to OFF.

•Set the image processing (PROC) to OFF.

•Turn the [RAIN] control to the minimum position (fully to the left).

•Turn the [GAIN] control to the maximum position (fully to the right).

•Turn the [SEA] control to achieve the strength with which main bang can be judged.

4) Adjust the value so that the main bang can be erased.

9. RADAR/TT Initial Setup

3. MBS

2. MBS Area

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT

7－31

7.3.4 Adjustment of Performance Monitor

After replacement of either of the following units, adjust the performance monitor

according to the procedures in this section:

•Performance monitor

•Antenna unit

7.3.4.1 Transmission Monitor Adjustment (MON Adjustment)

Adjust the circuit for monitoring the transmission performance of the radar

equipment.

Procedures

1) If the performance monitor is equipped with an inter-switch

function, set it as the master display unit.

2) Open the Serviceman Menu.

3) Perform the following menu open procedure to open the

Performance Monitor Adjustment menu.

→

4) Increase or decrease the adjustment value so that the farthest

point of the performance monitor pattern touches the 18.0 nm

line on the chart.

Fig 7-2: MON Adjustment

1. Adjust Menu

4. TXRX Adjustment

4. MON Adjustment

18.00NM Increase or decrease the

adjustment value so that the

farthest point of the

Performance Monitor pattern

contacts the 18.0 nm line.

Performance Monitor pattern

7－32

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT

7.3.4.2 Reception Monitor Adjustment (MON Indicator Adjustment)

Adjust the circuit for monitoring the reception performance of the radar

equipment.

Procedures

1) If the performance monitor is equipped with an inter-switch

function, set it as the master display unit.

2) Open the Serviceman Menu.

3) Perform the following menu open procedure to open the

performance monitor Indicator Adjustment menu.

→

4) Increase or decrease the adjustment value so that the

performance monitor level indicator will be adjusted to "8".

5) Attach the INFORMATION LABEL provided with the performance

monitor to an appropriate position on the display unit.

6) Write the performance monitor bar value check date to the

INFORMATION LABEL.

During performance monitor adjustment, all acquisitions by the

target tracking function are released.

The released target acquisitions are not recovered.

1. Adjust Menu

4. TXRX Adjustment

4. MON Adjustment

MON

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU

7－33

7.4 MAINTENANCE MENU

This item is provided for equipment maintenance, including settings of antenna

safety switch, master reset, etc.

7.4.1 Antenna Safety Switch (Safety Switch)

Use this switch to measure the transmission/reception performance while the

antenna is in stopped state.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Safety

Switch setting menu.

→

3) Select the item to be set.

Set operation when the antenna safety switch is turned off.

4) Change the setting back to when the work is finished.

Only our service engineers are to make the

adjustment. Neglecting this caution may cause

accidents and failures.

Do not make the adjustments during navigation.

Otherwise, adjustments may affect the radar functions,

causing accidents and failures.

：The transmitter stops transmission. The screen on the

display unit remains in transmission state.

：(Normal setting) The transmitter stops transmission. The

screen on the display unit is placed in standby state.

：The transmitter continues transmission. The screen on the

display unit remains in transmission state. In this case,

however, an error such as a bearing signal failure occurs

because the safety switch is turned off.

3. Maintenance Menu

1. Safety Switch

1. TX-OFF

2. Standy

3. TX-ON

2. Standy

7－34

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU

7.4.2 Initialization of Memory Area(Area Initial)

If system operation is unstable, it may be stabilized by initializing the memory

area. To initialize the memory area, follow the procedure in this section. The

memory area is reset to the factory setting when initialized.

7.4.2.1 Partial Master Reset

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Partial

Master Rest operation menu for the memory area.

→

3) Select the items to be initialized.

4) Select in the Confirmation Menu.

The memory areas of specified items are initialized, and the system is restarted.

7.4.2.2 All Master Reset

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the All

Master Rest operation menu for the memory area.

→

3) Select in the Confirmation Menu.

The whole memory area is initialized, and the system is restarted.

：The set values in the Serviceman menu are initialized.

：The set values not in the Serviceman menu are initialized.

：The user-set values are initialized.

：The set values for the target tracking function are initialized.

：The set values for the AIS display function are initialized.

：The color scheme and brilliance setting for the day/night

mode are initialized.

3. Maintenance Menu

2. Area Initial

1. Partial Master Reset

1. Serviceman Menu

2. Except Serviceman Menu

3. User Setting

4. TT Setting

5. AIS Setting

6. Day/Night

1. Yes

3. Maintenance Menu

2. Area Initial

2. All Master Reset

1. Yes

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU

7－35

7.4.3 Save of Internal Memory Data (Card1/2)

The system can save internal memory data such as item settings in all menus onto

a flash memory card. If the radar processing circuit in the system has been

replaced, the set values before the circuit replacement can be restored by reading

the set values you saved before the replacement.

To save the internal memory data onto a flash memory card (option), the card

must be inserted in card slot beforehand.

7.4.3.1 Copying of Internal Settings onto Card (Internal To Card1/2)

Save the internal memory data, such as item settings in menus, onto a flash memory card.

The internal memory data should be saved at completion of system setting, and the operation

condition should be saved periodically.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Internal

to Card2 menu.

→

3) Select in the Confirmation Menu.

The internal memory data is saved on the flash memory card.

7.4.3.2 Reading of Internal Settings from Card (Card1/2 To Internal)

Read the saved memory data from the flash memory card into the system memory.

Perform the read operation in order to return the system to the previous operation condition

after replacement of the radar processing circuit in the system.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Card2 to

Internal menu.

→

3) Select in the Confirmation Menu.

The memory data is read from the flash memory card into the system memory.

After the internal memory area is updated, the system is restarted.

3. Maintenance Menu

3. Internal To Card2

1. Yes

3. Maintenance Menu

4. Card2 To Internal

1. Yes

7－36

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU

7.4.4 Restoration of Scanner Unit Operation Time (TXRX Time)

The system adds up the following operation time and contains it in the scanner

unit:

•Transmission time

•Motor run time

Clear the above total time when the magnetron or scanner unit motor is replaced.

7.4.4.1 Clear of Motor Run Time (Clear TX Time)

Clear the scanner's motor run time.

Perform the following procedure to clear the motor run time when the scanner motor is

replaced.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Clear

Motor Time menu.

→

3) Select in the Confirmation Menu.

The motor run time in the TXRX's internal control circuit is cleared to 0.

7.4.4.2 Save of Antenna Time (Clear Motor Time)

Save the following scanner unit time data from the scanner unit into the display unit.

Perform the following procedure to inherit the scanner unit time data when the TXRX's

internal control circuit is replaced.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Clear

Motor Time menu.

→

3) Select in the Confirmation Menu.

The motor run time in the TXRX's internal control circuit is cleared to 0.

3. Maintenance Menu

5. TXRX Time

1. Clear TX Time

1. Yes

3. Maintenance Menu

5. TXRX Time

2. Clear Motor Time

1. Yes

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU

7－37

7.4.4.3 Save of Scanner Unit Time (TXRX To Display Unit)

Save the following scanner unit time data from the scanner unit into the display unit.

Perform the following procedure of 7.4.4.4 to inherit the scanner unit time data when the

TXRX's internal control circuit is replaced.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the TXRX to

Display Unit menu.

→

3) Select in the Confirmation Menu.

The scanner unit time data in the TXRX's internal control circuit is saved transferred to the

display unit.

7.4.4.4 Restoration of Antenna Time (Display Unit To TXRX)

Restore the antenna time data from the display unit into the antenna's internal control circuit.

Perform the above procedure of 7.4.4.3 to inherit the antenna time data when the antenna's

internal control circuit is replaced.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the Display

Unit to TXRX menu.

→

3) Select in the Confirmation Menu.実行確認画面で、を選択

する。

The scanner unit time data in the display unit is restored transferred to the antenna's internal

control circuit.

3. Maintenance Menu

5. TXRX Time

3. TXRX To Display Unit

1. Yes

3. Maintenance Menu

5. TXRX Time

4. Display Unit To TXRX

1. Yes

7－38

JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU

7.4.5 Update of Character String Data (String Data Update)

The system is designed to transfer and display external character strings as the

second language display. The second language is factory-set to "Japanese."

Ask our agent or sales department for the supply of character strings to be

updated.

To update character strings, the flash memory card (option) containing the

character string file must be inserted in card slot 2.

Procedures

1) Open the Serviceman Menu.

2) Perform the following menu open procedure to open the String

Data Update menu.

→

3) Select in the Confirmation Menu.

The character string file on the flash memory card is read into the system, and the second

language area is updated.

To display the read character strings in the second language, select Other in the menu

shown in Section 7.2.6 "Language Setting (Language)".

3. Maintenance Menu

6. String Data Update

1. Yes

COUNTERMEASURES FOR TROUBLE AND ADJUSTMENT

8.1 ROUTINE MAINTENANCE ....................................................................8-1

8.2 MAINTENANCE ON EACH UNIT ...........................................................8-2

8.2.1 Scanner Unit NKE-1125/1129/1130/1139/2103/2254 ....................8-2

8.2.2 Wave Guide Tube (JMA-9123-7XA/9XA) ........................................8-4

8.2.3 Coaxial Cable (JMA-9133-SA) ........................................................8-4

8.2.4 Transmitter Receiver Unit (NTG-3225/3230) ................................8-5

8.2.5 Display Unit (NCD-4990) ................................................................8-5

8.3 PERFORMANCE CHECK ......................................................................8-6

8.3.1 Check Performance on Test Menu ...............................................8-6

8.3.1.1 Self-diagnosis function (Self Test) ............................................8-7

8.3.1.2 Monitor Test ................................................................................8-9

8.3.1.3 Operation Unit Test (Keyboard Test) .......................................8-9

8.3.1.4 Check of the Performance Monitor (MON Display) ...............8-10

8.3.1.5 System Alarm Log display .......................................................8-10

8.3.1.6 System Information ..................................................................8-11

8.3.1.7 Magnetron Current ....................................................................8-11

8.4 REPLACEMENT OF MAJOR PARTS ..................................................8-12

SECTION 8

COUNTERMEASURES FOR TROUBLE

AND ADJUSTMENT

8.4.1 Parts Required for Periodic Replacement ..................................8-13

8.4.2 Replacement of magnetron ..........................................................8-13

8.4.2.1 Scanner Unit NKE-1130 ............................................................8-14

8.4.2.2 Scanner Unit　NKE-2254, NKE-1125 .......................................8-16

8.4.2.3 Scanner Unit　NKE-2103 .........................................................8-19

8.4.2.4 Transmitter Receiver Unit　NTG-3230 ....................................8-21

8.4.2.5 Transmitter Receiver Unit　NTG-3225 ....................................8-24

8.4.3 Replacement of Motor ...................................................................8-28

8.4.3.1 Scanner Unit　NKE-1139/1130 ................................................8-28

8.4.3.2 Scanner Unit　NKE-1125/2254 ................................................8-30

8.4.3.3 Scanner Unit　NKE-2103 .........................................................8-31

8.4.4 Replacement of LCD Monitor .......................................................8-33

8.4.4.1 Display Unit NCD-4990 .............................................................8-33

8.4.5 Replacement of Backup Battery ..................................................8-36

8.4.5.1 About the Battery Alarm ...........................................................8-36

8.4.5.2 How to Replacement of Backup Battery .................................8-36

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.1 ROUTINE MAINTENANCE

8－1

8.1 ROUTINE MAINTENANCE

For operating the radar equipment in the good conditions, it is necessary to make

the maintenance work as described below. If maintenance is made properly,

troubles will reduce. It is recommended to make regular maintenance work.

Common points of maintenance for each unit are as follow:

•Clean the equipment.

Remove the dust, dirt, and sea water rest on the equipment cabinet with a piece of

dry cloth.

Especially, clean the air vents with a brush for good ventilation.

• Never carry out internal inspection or repair work of the

equipment by users. Inspection or repair work by

unauthorized personnel may result in fire hazard or

electric shock. Ask the nearest branch, business office or

a dealer for inspection and repair.

• Turn off the main power before maintenance work.

Otherwise, an electric shock may result.

• Turn off the main power before cleaning the equipment.

Especially, make sure to turn off the indicator if a rectifier

is used. Otherwise, equipment failure, or death or serious

injury due to electric shock may result, because voltage is

outputted from the rectifier even when the radar is not

operating.

8－2

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.2 MAINTENANCE ON EACH UNIT

8.2 MAINTENANCE ON EACH UNIT

8.2.1 Scanner Unit NKE-1125/1129/1130/1139/2103/2254

a. Precautions in Mounting the Cover

When the cover is removed for regular checkup and replacement of parts and

refitted after such work, the procedures of fastening bolts shall be taken with the

following precautions:

1) The proper fastening torque of the fitting bolts (M8) is 1176 to 1470 N/

cm (120 to 150kgf/cm) (which makes the inside water-tight and protects

the packings against permanent compressive strain).The packings

start producing from the cover at a torque of approximately 1470N/cm

(150kgf/cm). Do not fasten the bolts with a torque exceeding the

specified value. Otherwise, the screws may be broken.

2) Use an offset wrench of 11 mm X 13 mm or a double-ended wrench of

13 mm X 17 mm (not longer than 200 mm).

3) Screw all the bolts by hand first to prevent them playing, then fasten

them evenly in order not to cause one-sided fastening. (Fasten the

bolts with 25% of the required torque at the first step.)

• Turn off the main power source before starting

maintenance. Otherwise, an electric shock or injury

may be caused.

• Do not touch the radiator. Even if the power is turned

off, the radiator may be rotated by the wind.

• Turn "OFFi" the safety switch to stop the scanner unit.

(Refer to Section 1.4 "EXTERIOR DRAWINGS".)

Otherwise, you may be injured if touching the rotating

scanner unit by accident.

i. After the work, turn "ON" the scanner unit safety switch.

• Do not touch the radiator. Even if the power is turned

off, the radiator may be rotated by the wind.

*Fasten the bolts in the diagonal order.

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.2 MAINTENANCE ON EACH UNIT

8－3

b. Radiator

Check up and clean the radiator.

• If the radiator front face (radiation plane) is soiled with smoke,

salt, dust, paint or birds’ droppings, wipe it with a piece of soft

cloth wetted with alcohol or water and try to keep it clean at all

times. Otherwise, radar beam radiation may attenuate or reflect

on it, resulting in deterioration of radar performance.

• Never use solvents of gasoline, benzine, trichloroethylene and

ketone for cleaning. Otherwise, the radiation plane may

deteriorate.

②

①

③

④

⑤

⑥

⑦

⑧

Tightening torque : 120 to 150 kgf/cm

4-M8 (stainless steel) bolt

Tightening torque : 120 to 150 kgf/cm

8-M8 (stainless steel) bolt

②

①③

④

②①

③④

Bolt Tightening Procedure of

NKE-1125/1129/2254 Cover

Bolt Tightening Procedure of

NKE-1130 /1139 Cover

Bolt Tightening Procedure of

NKE-2103 Cover

Tightening torque : 120 to 150 kgf/cm

4-M8 (stainless steel) bolt

Attention

8－4

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.2 MAINTENANCE ON EACH UNIT

c. Rotating section

c-1 Supply Oil Seal

When there is not a grease nipple, the replenishment of grease oil is unnecessary.

Remove the cap on the grease nipple located on the side of the X band radar or on

the front of S band radar at which the radiator is supported, and grease with a

grease gun.Make the oiling every six months. The oil quantity shall be

approximately 100 g, which is as much as the grease comes out of the oil seal.

Use the grease of Mobilux 2 of Mobil Oil.

c-2 Oiling gears

Apply grease evenly to the tooth surfaces of the main shaft drive gear and the

encoder drive gear with a spreader or brush. Oiling in short intervals is more

effective to prevent the gears from wear and tear and extend their service life, but

oil at least every six months.

Use Mobilux2 of Mobile Oil.

c-3 Mounting legs

Check the mounting legs and mounting bolts of the antenna unit case for corrosion

at intervals and maintain them to prevent danger. Apply paint to them once a half

year because painting is the best measure against corrosion.

8.2.2 Wave Guide Tube (JMA-9123-7XA/9XA)

8.2.3 Coaxial Cable (JMA-9133-SA)

The coaxial tube gland of a coaxial cable terminal is fully waterproofed when

installed. To prevent a water leakage accident, periodically inspect the coaxial

tube gland. In particular, the coaxial tube gland should be repainted every six

months.

• Install wave guide tubes without any clearance. Leaving a

clearance may cause water leakage or corrosion later.

Attention

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.2 MAINTENANCE ON EACH UNIT

8－5

For details, refer to the coaxial cable installation procedure for S-band radars.

8.2.4 Transmitter Receiver Unit (NTG-3225/3230)

Wipe dust off the transmitter and receiver with a dry cloth or feather duster.

8.2.5 Display Unit (NCD-4990)

Dust accumulated on the screen will reduce clarity and darken the video. For

cleaning it, wipe it with a piece of soft cloth (flannel or cotton).

Do not wipe it strongly with a piece of dry cloth nor use gasoline or thinner.

• Do not apply strong shock to the coaxial cable by

striking it with a tool or hammering it. Otherwise, an

open circuit failure may result.

• Do not place anything heavy on the coaxial

cable.Otherwise, an open circuit failure may result.

• Do not twist or pull the coaxial cable.

• When cleaning the screen, do not wipe it too strongly

with a dry cloth. Also, do not use gasoline or thinner to

clean the screen. Otherwise the screen surface may be

damaged

8－6

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK

8.3 PERFORMANCE CHECK

Make operational check on the radar equipment regularly and if any problem is

found, investigate it immediately. Pay special attention to the high voltage

sections in checking and take full care that no trouble is caused by any error or

carelessness in measurement. Take note of the results of checking, which can be

used effectively in the next check work.

Operational check shall be made in accordance with Table 8-1 Function Check

List in the order as specified in it.

8.3.1 Check Performance on Test Menu

The radar operating state can be checked by opening the Test Menu.

Table8-1： Performance Check List

Equipment Item to be checked Criteria Remarks

Transmitter

Receiver Unit

Tuning LED of Receiver The LED is lighting during operation 48NM range

Display Unit Video and echoes on the screen Sensitivity

LCD brilliance can be controlled correctly

Various markers

Various numerical indications

Lighting

Can be correctly controlled

Memory See the Section [1] "Memory Test"

Communications Lines See the Section [3] "Check of

Communication Lines (Line Test)"

Power Supply, Backup Battery See the Section [4] "Supply Voltage"

Monitor See the Section 8.3.1.2 "Monitor Test"

Operation Unit See the Section 8.3.1.3 "Operation Unit

Test (Keyboard Test)"

System Alarm Log Display See the Section 8.3.1.5 "System Alarm

Log display"

System Information Display See the Section 8.3.1.6 "System

Information"

Magnetron current See the Section 8.3.1.7 "Magnetron

Current"

Target Tracking See the Section 5.2.7 "Operation Test

(TT Test Menu)"

Scanner Unit Signals from the Scanner Unit See the Section [2] "TXRX Test"

Performance Monitor See the Section 8.3.1.4 "Check of the

Performance Monitor (MON Display)"

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK

8－7

Procedures

1) Perform the following menu open procedure to open the Test

Menu.

→

2) Select the items to be checked.

The list of check items will appear.

8.3.1.1 Self-diagnosis function (Self Test)

Check of memory, scanner unit, and communications Lines

[1] Memory Test

Checks for the performance of built-in memory.

When no abnormality is found, OK is displayed. When an abnormality is found, NG is

displayed.

8.3.1.1Self-diagnosis function (Self Test)

8.3.1.2Monitor Test

8.3.1.3Operation Unit Test (Keyboard Test)

8.3.1.4Check of the Performance Monitor (MON Display)

8.3.1.5System Alarm Log display

8.3.1.6System Information

8.3.1.7Magnetron Current

[1]Memory Test

[2]TXRX Test

[3]Check of Communication Lines (Line Test)

[4]Supply Voltage

SDRAM Check

SRAM Check

FLASH ROM Check

GRAPHIC Check

Main

9. Test Menu

1. Self Test

2. Monitor Test

3. Keyboard Test

4. MON Display

5. System Alarm Log

6. System Information

Magnetron Current

1. Memory Test

2. TXRX Test

3. Line Test

4. Supply Voltage

1. SDRAM

2. SRAM

3. FLASH ROM

4. GRAPHIC

8－8

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK

[2] TXRX Test

Checks for signals from the scanner.

When no abnormality is found, OK is displayed. When an abnormality is found, NG is

displayed.

In standby, ** will appear.

[3] Check of Communication Lines (Line Test)

Check the status of communications with options.

When no abnormality is found, OK is displayed. When an abnormality is found, NG is

displayed.

The status display field of equipment not connected is left blank.

[4] Supply Voltage

Check the voltage of internal power supply.

Scanner's safety switch check

Scanner rotation signal check

Heading line signal check

Check on the load current of high voltage in

the modulator

Radar trigger signal check

Radar video check

Check on connection with the transmitter-receiver

Check on connection with the signal processing circuit

Check on connection with the target tracking unit

Check on connection with the GYRO I/F unit

Check on connection with the interswitch

Item Normal value

12V 11.4 to 12.6V

5V 4.75 to 5.25V

3.3V 3.14 to 3.46V

Battery 2.5V or more

Safety Switch

AZI Pulse

HL Pulse

MH Current

Trigger

Video

TXRX

SIG. PROC

GYRO I/F

ISW

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK

8－9

8.3.1.2 Monitor Test

Checks for the display.

The test pattern will be shown on the display.

To return to the normal display, press any key.

If errors occur in the monitor, no test pattern will appear.

8.3.1.3 Operation Unit Test (Keyboard Test)

Checks for the controls and switches of the operation panel.

[1] Key Test

Checks for the controls and switches of the operation panel.

Each key on the operation panel on the display is shown in reverse video at the

same time the key is pressed, and the name of the pressed key is displayed.

[2] Buzzer Test

Checks for the operation panel buzzer.

The buzzer will sound. The buzzer automatically stops after it sounds for a

specified length of time.

[3] Light Test

Checks for the control panel light.

The brightness of the operation panel is gradually intensified at four levels.

：All colors are filled with white.

：A white box is displayed on the black background of 1280

×1024dot.

：Displays rectangle X 2, circle X 2, and cross-shape X13

(white lines on the black background).

：Displays “H” of 9 dots X 9 dots on the entire screen (white

character on the black background).

：Gray scale display (16 levels)

：Displays a color bar.

：Displays the VDR test pattern.

：Displays the specified color.

[1]Key Test

[2]Buzzer Test

[3]Light Test

1. Pattern1

2. Pattern2

3. Pattern3

4. Pattern4

5. Pattern5

6. Pattern6

7. Pattern7

8. Pattern8

1. Key Test

2. Buzzer Test

3. Light Test

8－10

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK

8.3.1.4 Check of the Performance Monitor (MON Display)

Displays the performance monitor status.

Procedures

1) Turn the [VRM] dial to make adjustments so that the farthest

point of the performance monitor pattern.

The of is displayed.

8.3.1.5 System Alarm Log display

Displays previously occurred system errors with the dates and times when they

occurred.

The current error is displayed at the lower right of the radar display. For details,

refer to Section 9.1.1 "List of Alarms and other Indications".

The Error log display button (page2-31 Alarm) is clicked, in the same way as that

one.

To erase the alarm logs, press the button in the log display window.

Transmitter system attenuation value check.

→

Receiver system attenuation value check.

→

*Transmitter System

Attenuation Value

*Receiver System

MON Pattern Range

Attenuation Value

Attenuation Value *Receiver System

All Clear

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK

8－11

8.3.1.6 System Information

Displays the current system information.

8.3.1.7 Magnetron Current

マDisplays the Magnetron Current bar indicating the magnetron current to check.

When a 48 NM range is set, the magnetron current is normal if the Magnetron

Current bar reads the value below.

Processor software version information

Scanner software version information

System number

Total magnetron transmitting time (Total time

during which radar was transmitted)

→

Total operating time (Total power-on time)

Total operating time of the scanner unit (Total

power-on time of the scanner unit)

Total operating time of the display unit (Total

power-on time of the display unit)

10kW : 4 to 6 scale marks

25/30kW : 6 to 9 scale marks

Indicator

TXRX

System No.

TX Time

X-Band

S-Band

Motor Time

TXRX Total Time

Total Time

8－12

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8.4 REPLACEMENT OF MAJOR PARTS

The system includes parts that need periodic replacement. The parts should be

replaced as scheduled. Use of parts over their service life can cause a system

failure.

• Turn off the main power source before replacing parts.

Otherwise, an electric shock or trouble may be caused.

• Before replacing the magnetron, turn off the main

power source and wait for 5 minutes or more until the

high voltage circuits are discharged. Otherwise, an

electric shock may be caused.

• Take off your wrist watch when bringing your hands

close to the magnetron. Otherwise, your watch may be

damaged because the magnetron is a strong magnet.

• Two or more persons shall replace the liquid crystal

monitor. If only one person does this work, he may

drop the LCD, resulting in injury.

• Even after the main power source is turned off, some

high voltages remain for a while. Do not contact the

inverter circuit in the LCD with bare hands. Otherwise,

an electric shock may be caused.

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－13

8.4.1 Parts Required for Periodic Replacement

Here are parts required for periodic replacement

8.4.2 Replacement of magnetron

When mounting a new magnetron, do not touch the magnet with a screwdriver or

put it on an iron plate. After replacement, connect the lead wire correctly.

Handling of Magnetron under Long-Time Storage

The magnetron that has been kept in storage for a long time may cause sparks and

operate unstably when its operation is started. Perform the aging in the following

procedures:

1) Warm up the cathode for a longer time than usually. (20 to 30 minutes

in the STBY state.)

2) Start the operation from the short pulse range and shift it gradually to

the longer pulse ranges. If the operation becomes unstable during this

process, return it to the standby mode immediately. Keep the state for

5 to 10 minutes until the operation is restarted.

Part name Interval Radar model Part type Part code

1. Magnetron 4,000 hours JMA-9110-6XA/6XAH 5VMAA00102 5VMAA00102

JMA-9122-6XA/9XA/6XAH

JMA-9123-7XA/9XA

5VMAA00106 5VMAA00106

JMA-9132-SA

JMA-9133-SA

5VMAA00104 5VMAA00104

2. Motor 10,000 hours JMA-9110-6XA/6XAH 7BDRD0048 7BDRD0048

JMA-9122-6XA/9XA

JMA-9123-7XA/9XA

MDBW10822 MDBW10822

JMA-9122-6XAH 7BDRD0045A 7BDRD0045A

JMA-9132-SA

JMA-9133-SA

MDBW10823 MDBW10823

3. Fan (Scanner Unit) 20,000 hours JMA-9110-6XA/6XAH

JMA-9122-6XA/9XA/6XAH

JMA-9132-SA

7BFRD0002 7BFRD0002

4. LCD PANEL 50,000 hours 7WSRD0002A 7WSRD0002A

5. Fan

(Radar Process Circuit) 20,000 hours 109R0612S4D13 5BFAB00588

(Power Supply) 20,000 hours H-7BFRD0006 7BFRD0006

7. Backup battery 5 years 5ZBCJ00012 5ZBCJ00012

Replacement of magnetron must be made by specialized

service personnel.

For details, refer to Service Manual.

8－14

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8.4.2.1 Scanner Unit NKE-1130

[Required tools]

•

A Phillips screwdriver for 4 mm screw

•

A Phillips screwdriver for 6 mm screw

•

A wrench (width across flats 13 mm, for M8 screws)

[Replacement procedure]

Before starting part replacement work, turn

off the safety switch of the scanner unit.

The safety switch is located on the rear

(stern) side. Remove the cover and turn off

(to the lower side) the safety switch.

Remove the pedestal cover.

Make sure that there is no foreign matter or

dust adhered to the gasket when you put

the cover on.

Bow side

Turn off the

safety switch.

Remove the eight

hexagonal screws.

Removing the port side cover

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－15

Remove the cover on the left

(port) side and check that there

is no remaining electric charge in

the modulation high-voltage

circuit board.

Remove the two screws (M4)

holding the magnetron cables

(both yellow and green).

Remove the eight screws (M6) to

remove the fixture holding the

magnetron. The screws cannot be

removed from the fixture, so loosen

the all eight screws and remove the

magnetron together with the fixture.

The magnetron is held by a hook, but be

careful not to let it fall.

Use a non-magnetic screwdriver. If the

magnetron comes into contact with any

metal (tool), its performance may

deteriorate.

Install the new magnetron together with the fixture and tighten the screws to hold

the cables.

Follow the removal procedure in the reverse order.

Do not forget to tighten the screws and connect the cables.

[Operation check]

After you have completed the replacement work, follow the procedure below to

check the operation.

Magnetron

Remove the yellow cable.

Remove the green cable.

Remove the

two screws.

Remove the magnetron.

Remove the metal fixture.

Loosen the

eight screws.

8－16

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

Turn on the power supply for the radar. Allow sufficient time for the radar to be

preheated (about 20 to 30 minutes / bring the radar unit to STBY mode).

Start emitting radio waves from the short pulse range and gradually change the

emissions to the long pulse range. Open the service engineer menu to perform tuning

adjustment.

If operation becomes unstable, bring the radar unit back to STBY mode and restart

emission after allowing for an interval of 5 to 10 minutes.

Emit radio waves in long pulse range mode for about 15 minutes and reopen the

service engineer menu to perform tuning adjustment.

Adjust the setting in the service engineer menu until the tuning indication bar on the

display unit reaches the 8th calibration marking.

Check in the service engineer menu that the magnetron current is between the 6th

and 9th calibration markings.

Finally, initialize the transmission time in the service engineer menu.

8.4.2.2 Scanner Unit　NKE-2254, NKE-1125

[Required tools]

•

A Phillips screwdriver for 4 mm screw

•

A Phillips screwdriver for 6 mm screw

•

A wrench (width across flats 13 mm, for M8 screws)

[Replacement procedure]

Before starting part replacement work,

turn off the safety switch of the scanner

unit.

Bow direction

Turn off the

safety switch.

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－17

Loosen the hexagonal bolts (4) and

remove the pedestal cover.

Make sure that there is no foreign

matter or dust adhered to the gasket

when you put the cover on.

Loosen the screws (four M4 screws) to

remove the magnetron cover.

Make sure there is no charge remaining

in the modulation high-voltage circuit

board, and then remove the screws

(two M4 screws) holding the magnetron

cables (yellow and green) in place.

Remove the screws (four M4 screws)

holding the magnetron in place, then

replace the magnetron after cutting the

leads (yellow and green) for the

replacement magnetron to an

appropriate length.

When the starboard side cover is removed

（4

Loosen the four

hexagonal bolts.

Loosen the

four screws.

Magnetron cover

Remove the

green cable.

Remove the

yellow cable.

Magnetron

Remove the

four screws.

Remove the

two screws.

8－18

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

Use a non-magnetic screwdriver. If the magnetron comes into contact with any metal

(tool), its performance may deteriorate.

After having replaced the magnetron, reassemble the unit by following the

disassembly procedure in the reverse order.

Do not forget to tighten the bolts and screws, and do not forget to reconnect the

cables.

Extreme care should be taken to connect the leads (yellow and green) to the magnetron

for prevention of contact with other parts or the casing. Contact may cause them to

discharge.

[Operation check]

After you have completed the replacement work, follow the procedure below to

check the operation.

Turn on the power supply for the radar. Allow sufficient time for the radar to be

preheated (about 20 to 30 minutes / bring the radar unit to STBY mode).

Start emitting radio waves from the short pulse range and gradually change the

emissions to the long pulse range. Open the service engineer menu to perform tuning

adjustment.

If operation becomes unstable, bring the radar unit back to STBY mode and restart

emission after allowing for an interval of 5 to 10 minutes.

Emit radio waves in long pulse range mode for about 15 minutes and reopen the

service engineer menu to perform tuning adjustment.

Adjust the setting in the service engineer menu until the tuning indication bar on the

display unit reaches the 8th calibration marking.

Check in the service engineer menu that the magnetron current is between the 6th

and 9th calibration markings.

Finally, initialize the transmission time in the service engineer menu.

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－19

8.4.2.3 Scanner Unit　NKE-2103

[Required tools]

•

A Phillips screwdriver for 4 mm screw

•

A Phillips screwdriver for 6 mm screw

•

A wrench (width across flats 13 mm, for M8 screws)

Before starting part replacement work,

turn off the safety switch on the bottom

of the scanner unit.

Loosen the hexagonal bolts (four bolts)

and open the upper cover until the stopper of the

stay operates.

When closing the upper cover, release the stay

stopper and then tighten the cover.

Bow direction

Turn off the

safety switch.

Loosen the four

hexagonal bolts.

Stay

8－20

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

Loosen the screws (four M4 screws), remove the

transmitter-receiver unit cover, and remove the cables

connected to the transmitter-receiver unit (ten cables).

Slide the cover of the transmitter-receiver unit to

remove it.

Loosen the bolts (five M5 bolts) and

remove the transmitter-receiver unit.

Slide the transmitter-receiver unit

upward to remove it.

Remove the screws (six M4 screws)

holding the magnetron in place and replace

the magnetron.

Use a non-magnetic screwdriver. If the

magnetron comes into contact with any metal

(tool), its performance may deteriorate.

Cut the leads (yellow and green) for the

replacement magnetron to an appropriate

length, then tighten the screws and fix the

cables in place.

After having replaced the magnetron, reassemble the unit by following the

disassembly procedure in the reverse order.

Loosen the

four screws.

Slide the cover.

Tighten the

five bolts.

Slide the unit.

Magnetron

Nut plate Remove the

six screws.

Yellow cable

Green cable

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－21

Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables.

Extreme care should be taken to connect the leads (yellow and green) to the magnetron

for prevention of contact with other parts or the casing.

[Operation check]

After you have completed the replacement work, follow the procedure below to

check the operation.

Turn on the power supply for the radar. Allow sufficient time for the radar to be

preheated (about 20 to 30 minutes / bring the radar unit to STBY mode).

Start emitting radio waves from the short pulse range and gradually change the

emissions to the long pulse range. Open the service engineer menu to perform tuning

adjustment.

If operation becomes unstable, bring the radar unit back to STBY mode and restart

emission after allowing for an interval of 5 to 10 minutes.

Emit radio waves in long pulse range mode for about 15 minutes and reopen the

service engineer menu to perform tuning adjustment.

Adjust the setting in the service engineer menu until the tuning indication bar on the

display unit reaches the 8th calibration marking.

Check in the service engineer menu that the magnetron current is between the 4th

and 6th calibration markings.

Finally, initialize the transmission time in the service engineer menu.

8.4.2.4 Transmitter Receiver Unit　NTG-3230

[Required tools]

A flatblade screwdriver for 6 mm screws

•

A Phillips screwdriver for 4 mm screw

•

A Phillips screwdriver for 6 mm screw

8－22

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

[Replacement procedure]

Loosen the four screws and remove the cover.

The screws are slotted captive screws.Use a

flatblade screwdriver.

Remove the screws (six M4 screws) and slide

the modulator cover to the right to remove

it.

Remove the four screws.

Loosen the six screws.

Modulator cover

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－23

Remove the screws holding the cables (two

M4 screws) and the bolts holding the

magnetron (eight M6 screws) and remove the

metal fitting and the magnetron.

Use a non-magnetic screwdriver. If the

magnetron comes into contact with any metal

(tool), its performance may deteriorate.

Be careful to attach the colored cables

(yellow and green) to the correct connections

on the replacement magnetron.

After having replaced the magnetron,

reassemble the unit by following the

disassembly procedure in the reverse order.

Do not forget to tighten the bolts and screws, and

do not forget to reconnect the cables.

[Operation check]

After you have completed the replacement work, follow the procedure below to

check the operation.

Turn on the power supply for the radar. Allow sufficient time for the radar to be

preheated (about 20 to 30 minutes / bring the radar unit to STBY mode).

Start emitting radio waves from the short pulse range and gradually change the

emissions to the long pulse range. Open the service engineer menu to perform tuning

adjustment.

If operation becomes unstable, bring the radar unit back to STBY mode and restart

emission after allowing for an interval of 5 to 10 minutes.

Emit radio waves in long pulse range mode for about 15 minutes and reopen the

service engineer menu to perform tuning adjustment.

Yellow

cable

Magnetron

Modulator

Green

cable

Remove the

eight bolts.

Remove the

two screws.

Green cable

Yellow cable

8－24

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

Adjust the setting in the service engineer menu until the tuning indication bar on the

display unit reaches the 8th calibration marking.

Check in the service engineer menu that the magnetron current is between the 6th

and 9th calibration markings.

Finally, initialize the transmission time in the service engineer menu.

8.4.2.5 Transmitter Receiver Unit　NTG-3225

[Required tools]

A flatblade screwdriver for 6 mm screws

・A Phillips screwdriver for 4 mm screw

[Replacement procedure]

Loosen the four screws and remove the cover.

The screws are slotted captive screws.Use a flatblade

screwdriver.

Loosen the four screws .

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－25

Loosen the upset head bolt (one M4 bolt),

and slide the tightening metal fitting,

located between the modulator and the

circulator, to remove it.

The magnetron is installed within the

modulator.

Loosen the inside screws of the modulator

(four M4 screws).

Removing the outside screws makes it

possible to slide the modulator.

Tightening metal fitting Circulator

Modulator

Remove the screw.

Loosen the four

screws.

Tightening

metal fitting

Modulator

8－26

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

Remove the cables connected to the modulator and

the screws on the outside of the modulator (four M4

screws) and slide the modulator to the right to

remove it.

Remove the screws (six M4 screws) and take off the

modulator cover.

Remove the screws holding the cables

(two M4 screws) and the screws holding

the magnetron (four M4 screws) and

remove the metal fitting and the

magnetron.

Use a non-magnetic screwdriver. If the

magnetron comes into contact with any

metal (tool), its performance may

deteriorate.

Remove the four

outside screws.

Modulator

Remove the six screws.

Remove the four screws.

Magnetron

Remove the two screws.

Green cable

Yellow cable

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－27

Be careful to attach the colored cables

(yellow and green) to the correct

connections on the replacement

magnetron.

After having replaced the magnetron,

reassemble the unit by following the

disassembly procedure in the reverse

order.

Do not forget to tighten the bolts and screws,

and do not forget to reconnect the cables.

[Operation check]

After you have completed the replacement work, follow the procedure below to

check the operation.

Turn on the power supply for the radar. Allow sufficient time for the radar to be

preheated (about 20 to 30 minutes / bring the radar unit to STBY mode).

Start emitting radio waves from the short pulse range and gradually change the

emissions to the long pulse range. Open the service engineer menu to perform tuning

adjustment.

If operation becomes unstable, bring the radar unit back to STBY mode and restart

emission after allowing for an interval of 5 to 10 minutes.

Emit radio waves in long pulse range mode for about 15 minutes and reopen the

service engineer menu to perform tuning adjustment.

Adjust the setting in the service engineer menu until the tuning indication bar on the

display unit reaches the 8th calibration marking.

Check in the service engineer menu that the magnetron current is between the 6th

and 9th calibration markings.

Finally, initialize the transmission time in the service engineer menu.

Magnetron

Pulse transformer

Yellow cable

Green cable

8－28

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8.4.3 Replacement of Motor

8.4.3.1 Scanner Unit　NKE-1139/1130

[Required tools]

•

A wrench (width across flats 17 mm, for M10 screws)

•

A Phillips screwdriver for 4 mm screw

•

Tools for removing the cover from the scanner unit.(Refer

to the 8.4.2.1)

[Replacement procedure]

Remove the cover on the right (starboard)

side (see

8.4.2.1

) and loosen the four screws

(M4) to remove the driver unit, which has

the motor driver circuit board on its back

side.

Disconnect the cables connecting the motor

to the motor driver circuit board.

Replacement of motor must be made by specialized service

personnel.

For details, refer to Service Manual.

Driver unit (driver circuit

board at the back side)

Remove the

four screws.

Driver circuit

board Disconnect the

cables.

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－29

Remove the cover on the left (port) side and

remove the five screws (M5) to remove the

fixture.

Remove the four hexagonal screws (M10x40,

SW10, and W10) that hold the motor from both the

right and left sides to remove the motor.

Apply grease to the gear wheel of the new

motor.

Install the new motor in the scanner unit and

secure it using the hexagonal screws. Tighten

the screws with the specified torque (380 kgf-

cm).

After replacing the motor, assemble the unit

in the reverse order of the disassembly procedure.

Do not forget to tighten the screws and connect the cables.

Remove the

metal fixture.

Remove the

five screws.

Remove the four hexagonal

screws (two screws on each side)

Remove the motor.

Apply grease.

Motor gear wheel

8－30

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

[Operation check]

After you have completed the replacement work, follow the procedure below to

check the operation.

Turn on the radar power supply. After the countdown is completed, start emission

and check that the radar image appears without error. Check that you do not hear

any unusual sound when the motor starts, rotates, and stops.

Open the service engineer menu to initialize the motor rotation time.

8.4.3.2 Scanner Unit　NKE-1125/2254

[Required tools]

•

Single-ended wrench (width across flats 17 mm for M8

bolts)

•

Tools for removing the cover from the scanner unit.(Refer to the 8.4.2.2)

[Replacement procedure]

Remove the cover on the left (port) side

(see Section 8.4.2.2) and remove the

cables connected to the motor driver

circuit board.

Remove the hexagonal bolts (four M8

bolts) and remove the motor.

Remove the hexagonal bolts (four M8

bolts) and remove the installation plate from the

motor.

Motor

Motor driver circuit

Remove the

four bolts.

Remove the

two cables.

Motor

Motor driver

circuit board

Remove the

four bolts.

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

8－31

Attach the installation plate to the replacement

motor. Do not forget to tighten the hexagonal

bolts to an appropriate torque (210 kgf-cm) so

they are free of looseness.

Install the motor into the scanner unit. Press the

motor against the protrusions of the arm fixed to

the motor on which the arm extends through the

wall of the casing, adjust it to minimize backlash,

and fix it in place.

Do not forget to tighten the hexagonal bolts, to an appropriate torque (140 kgf-cm)

so they are free of looseness.

After having installed the motor, grease the

gear wheel.

After having replaced the motor, reassemble

the unit by following the disassembly

procedure in the reverse order.

Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables.

8.4.3.3 Scanner Unit　NKE-2103

[Required tools]

•

A Phillips screwdriver for 4 mm screw

•

A Phillips screwdriver for 5 mm screw

•

Single-ended wrench (width across flats 10 mm for M6

bolts)

•

Tools for removing the cover from the scanner

unit.(Refer to the

8.4.2.3

)

Arm protrusions

Press

Tighten the four bolts.

Grease here.

8－32

JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS

[Replacement procedure]

Open the upper cover (see Section 8.4.2.3) to

remove the transmitter-receiver unit.

Remove the hexagonal bolts (four M6 bolts) and

remove the motor. Grease the gear wheel of the

replacement motor and place it in the casing. Do

not forget to tighten the hexagonal bolts to an

appropriate torque (72 kgf-cm) so they are free of

looseness.

After having replaced the motor, reassemble the unit by following the disassembly

procedure in the reverse order.

Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables.

Clamp the cables so they do not interfere with the rotation of the motor's rotors.

[Operation check]

After you have completed the replacement work, follow the procedure below to

check the operation.

Turn on the radar and emit radar waves once the countdown is finished, and check

that the radar image is correctly displayed. Check that the motor does not make any

abnormal sound when it starts to rotate, while it is rotating, or when it stops.

Remove the

four bolts.

Japan Radio Co NKE1125 Marine Radar User Manual JMA 9100 series RADAR Instruction Manual

Japan Radio Co Ltd. Marine Radar JMA 9100 series RADAR Instruction Manual

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