STAND ALONE

X-band 25kW transmitting output

JMA-9922-9XA STAND ALONE

DESK TOP

JMA-9922-9XA DESK TOP

JMA-9923-9XA STAND ALONE

JMA-9923-9XA DESK TOP

S-band 30kW transmitting output

JMA-9932-SA STAND ALONE

JMA-9932-SA DESK TOP

JMA-9933-SA STAND ALONE

JMA-9933-SA DESK TOP
For further information, contact:

Since 1915

Main Office: Nittochi Nishi-Shinjuku bldg. 10-1, Nishi-Shinjuku 6-chome Shinjuku-ku, Tokyo 160-8328, Japan Telephone: +81-3-3348-4099 Facsimile: +81-3-3348-4139
Overseas Branches : Seattle, Amsterdam Liaison Offices : Taipei, Manila, Jakarta, Singapore, Hanoi, New York, Athens
ISO9001 ISO14001 Certified

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5. OPERATION OF ARPA
Using ARPA.... 5-1 5.1 INITIAL SETTING... 5-2 Setting Collision Decision Criteria : SAFE LIMIT. 5-2 Automatic Setting Mode (System Start). 5-4 Setting Range Scale : RANGE SCALE.. 5-4 Setting Own Ship's Speed.. 5-5 5.2 DISPLAY MODE SETTING... 5-7 Setting Motion Display Mode [TM/RM].. 5-7 Setting Bearing Display Mode [AZI MODE]. 5-7 5.3 TARGET ID No. DISPLAY... 5-8 5.4 TARGET ACQUISITION... 5-9 Automatic Acquisition [AUTO].. 5-11 Manual Acquisition [MANUAL]..5-12 Use of Automatic and Manual Acquisition Modes [ACQ AUTO] [ACQ MANUAL].5-12 5.5 ARPA DATA DISPLAY...5-13 Display of Vectors..5-13 Display of Past Positions [PAST POSN]..5-16 5.6 DATA DISPLAY...5-18 Types of Data Display...5-18 Method of Displaying Target Data [TGT DATA]..5-19 Cancellation of Displaying Target Data [TGT DATA].5-19 5.7 ALARM DISPLAY....5-20 Dangerous Target Alarm: CPA/TCPA..5-20 Guard Zone Alarm [GUARD ZONE]..5-21 Lost Target Alarm [LOST TARGET]..5-22 System Function Alarm [ARPA (DATA) ]..5-23 Gyro Set Alarm [SET GYRO]...5-23 5.8 TRIAL MANEUVERING...5-24 Trial Maneuvering in the True Vector Mode..5-24 Trial Maneuvering in the Relative Vector Mode..5-25 Using the TRIAL Function...5-26 5.9 DELETING UNWANTED TARGETS...5-27 Deleting Targets...5-27 5.10 ARPA SETTING....5-29 Simulation...5-30

- xx -

Gate Size....5-32 Test Video...5-34
6. TRUE AND FALSE ECHOES ON DISPLAY
Radar Wave with the Horizon.. 6-1 Strength of Reflection from the Target.. 6-3 Sea Clutters... 6-3 False Echoes.... 6-3 Display of Radar Transponder (SART).. 6-6

7. MAINTENANCE

7.1 ROUTINE MAINTENANCE... 7-1 7.2 MAINTENANCE ON EACH UNIT.. 7-2 Scanner NKE-1079/1075A/1089/1087... 7-2 Transmitter-receiver Unit NTG-3037A/3028. 7-4 Display Unit NCD-4263... 7-5 Coaxial Cable (JMA-9933-SA).. 7-5 Wave Guide (JMA-9923-7XA/9XA)... 7-6
8. COUNTERMEASURES FOR TORUBLE AND ADJUSTMENT
8.1 FUNCTION CHECK... 8-1 Function Check on Test Menu... 8-2 List of Alarms and other Indications..8-14 8.2 TROUBLESHOOTING...8-17 8.3 COUNTERMEASURES TO TROUBLE..8-18 8.4 REPLACEMNT OF MAJOR PARTS...8-24 Replacement of PARTS Periodically..8-26 Replacement of Magnetron (V1/V201)..8-26 Replacement of the Liquid-Crystal Monitor..8-32

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8.5 ADJUSTMENT...8-33 Tuning Adjustment...8-34 Bearing Adjustment...8-35 Range Adjustment...8-36 Antenna Height Adjustment..8-37 Vector Constant...8-38 Using Sector Blank function..8-39 Quantization Level...8-42 Adjustment of NSK Unit to Gyro Compass and Log.8-44 Main Bang Suppression Adjustment..8-46 8.6 SETTING...8-48 True Bearing Setting..8-48 Ship Speed Setting...8-49 Navigation Equipment Setting..8-51 Current Correction (SET/DRIFT) Setting..8-52 Time/Day Display Setting...8-54 Adjustment of Performance Monitor (NJU-63/64).8-56 Adjustment of Inter switch...8-58

9. AFTER-SALES SERVICE

When you Request for Repair... 9-1 Recommended Maintenance.. 9-1 Radar Failure Check List.. 9-2

10. DISPOSAL

10.1 DISPOSAL OF THE UNIT...10-1 10.2 DISPOSAL OF USED BATTERIES..10-1 10.3 DISPOSAL OF USED MAGNETRON...10-1 10.4 DISPOSAL OF TR-TUBE..10-2

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11. SPECIFICATION
11.1 JMA-9933-SA TYPE RADAR.. 11-1 11.2 JMA-9932-SA TYPE RADAR.. 11-2 11.3 JMA-9923-7XA/9XA TYPE RADAR.. 11-3 11.4 JMA-9922-6XA/9XA TYPE RADAR.. 11-4 11.5 SCANNER (NKE-1079)... 11-5 11.6 SCANNER (NKE-1075A).. 11-6 11.7 SCANNER (NKE-1089-7/9)... 11-7 11.8 SCANNER (NKE-1087-6/9)... 11-8 11.9 TRANSMITTER-RECEIVER UNIT (NTG-3037A).. 11-9 11.10 TRANSMITTER-RECEIVER UNIT (NTG-3028).. 11-10 11.11 DISPLAY UNIT (NCD-4263).. 11-11 11.12 ARPA... 11-13 11.13 PERFORMANCE MONITOR (NJU-63).. 11-14 11.10 PERFORMANCE MONITOR (NJU-64).. 11-14

APPENDIX

Radar System Composition... A-1 Radar System Circuit Block... A-3 INTERSWITCH (NQE-3141) OPERATION MANUAL.. A-8 JMA-9900 series Radar AIS OPERATION MANUAL.. A-22
Fig.101 Block Diagram of Radar, Type JMA-9933-SA and JMA-9923-7XA/9XA Fig.102 Block Diagram of Radar, Type JMA-9932-SA and JMA-9922-6XA/9XA Fig.103 Terminal Board Connection Diagram of Radar, Type JMA-9933-SA (Self standing type AC 220/230V 3) Fig.104 Terminal Board Connection Diagram of Radar, Type JMA-9933-SA (Self standing type AC 220/230V AC 100/110V 1) Fig.105 Terminal Board Connection Diagram of Radar, Type JMA-9933-SA (Desk top type AC 220/230V 3) Fig.106 Terminal Board Connection Diagram of Radar, Type JMA-9933-SA (Desk top type AC 220/230V AC100/110V 1) Fig.107 Terminal Board Connection Diagram of Radar, Type JMA-9932-SA (Self standing type AC 220/230V 3) Fig.108 Terminal Board Connection Diagram of Radar, Type JMA-9932-SA (Self standing type AC 220/230V AC 100/110V 1) Fig.109 Terminal Board Connection Diagram of Radar, Type JMA-9932-SA (Desk top type AC 220/230V 3) Fig.110 Terminal Board Connection Diagram of Radar, Type JMA-9932-SA (Desk top type AC 220/230V AC 100/110V 1) Fig.111 Terminal Board Connection Diagram of Radar, Type JMA-9923-7/9XA (Self standing type AC 220/230V 3)

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Fig.112 Terminal Board Connection Diagram of Radar, Type JMA-9923-7/9XA (Self standing type AC 220/230V AC 100/110V 1) Fig.113 Terminal Board Connection Diagram of Radar, Type JMA-99923-7/9XA (Desk top type AC 220/230V 3) Fig.114 Terminal Board Connection Diagram of Radar, Type JMA-99923-7/9XA (Desk top type AC 220/230/ V AC100/110V 1) Fig.115 Terminal Board Connection Diagram of Radar, Type JMA-9922-6/9XA (Self standing type AC 220/230V 3) Fig.116 Terminal Board Connection Diagram of Radar, Type, Type JMA-9922-6/9XA (Self standing type AC 220/230V AC 100/110V 1) Fig.117 Terminal Board Connection Diagram of Radar, Type JMA-9922-6/9XA (Desk top type AC 220/230V 3) Fig.118 Terminal Board Connection Diagram of Radar, Type JMA-9922-6/9XA (Desk top type AC 220/230V AC 100/110V 1) Fig.119 Primary Power Supply Block Diagram of Radar, Type JMA-9933-SA Fig.120 Primary Power Supply Block Diagram of Radar, Type JMA-9932-SA Fig.121 Primary Power Supply Block Diagram of Radar, Type JMA-9923-7XA/9XA Fig.122 Primary Power Supply Block Diagram of Radar, Type JMA-9922-6XA/9XA Fig.123 Internal Connection Diagram of Scanner Unit, Type NKE-1079 Fig.124 Internal Connection Diagram of Scanner Unit, Type NKE-1079-D Fig.125 Internal Connection Diagram of Scanner Unit, Type NKE-1075A(100/110V AC,1-phase) Fig.126 Internal Connection Diagram of Scanner Unit, Type NKE-1075A(220/230V AC,3-phase) Fig.127 Internal Connection Diagram of Scanner Unit, Type NKE-1075A (220/230V AC,1-phase) Fig.128 Internal Connection Diagram of Scanner Unit, Type NKE-1089-7/9 (1-phase) Fig.129 Internal Connection Diagram of Scanner Unit, Type NKE-1089-7/9 (3-phase) Fig.130 Internal Connection Diagram of Scanner Unit, Type NKE-1087-6/9 (1-phase) Fig.131 Internal Connection Diagram of Scanner Unit, Type NKE-1087-6/9 (3-phase) Fig.132 Internal Connection Diagram of Transmitter-receiver Unit, Type NTG-3037A Fig.133 Internal Connection Diagram of Transmitter-receiver Unit, Type NTG-3028 Fig.134 Internal Connection Diagram of Display Unit, Type NCD-4263 Fig.135 Internal Connection Diagram of LCD Monitor of Display Unit, Type NCD-4263 Fig.136 Block Diagram of Display Unit, Type NCD-4263 Fig.137 List of NSK and LOG Select Switches of Display Unit, Type NCD-4263 Fig.138 Setting Table of Speed LOG Select Switches of Display Unit, Type NCD-4263 Fig.139 Setting Table Gyro compass and Gyro Switches of Display Unit, Type NCD-4263 Fig.140 Terminal Board Connection Diagram of 2-unit Interswitch system, Type NQE-3141-2 Fig.141 Terminal Board Connection Diagram of 3-unit Interswitch system, Type NQE-3141-4 Fig.142 Internal Connection Diagram of Interswitch, Type NQE-3141-2 Fig.143 Internal Connection Diagram of Interswitch, Type NQE-3141-4

- xxiv -

GLOSSARY
This section describes the main terms used for this equipment and general related maritime terms. ARPA: Automatic Radar Plotting Aid. AZI MODE (Azimuth Stabilization MODE): Bering display mode BCR (Bow Cross Range): Bow cross range BCT (Bow Cross Time): Bow cross time BRG (Bearing): Bearing CPA (Closest Point of Approach): The closest point of approach from own ship, which can be set by the observer. COG (Course Over The Ground): Course relative to the ground. C UP (Course-Up): Own ships course is pointed to the top center of he radar display. DRIFT: Distance covered solely due to current, tidal stream and surface drift. EBL (Electronic Bearing Line): An electronic bearing line originated from own ships position. Floating EBL: Arbitrary point is EBL at the center. GND STAB (Ground Stabilization): Stabilization relative to the ground. GPS (Global Positioning System): The position of a GPS receiver can be determined by the signals from GPS satellites Guard Zone: Alarm ring against intrusion HDG (Heading): Own ships heading bearing. The display ranges from 000.0 to 359.9 degrees as scanned clockwise. HL (Heading Line): Ships heading line. H UP (Head-Up): Own ships heading line is always pointed to the top center of the radar display. IMO: International Maritime Organization Inter Switch(ISW): Inter-switch function Equipment that switches connection of two or more Display unit and two or more Scanner. IR: Interference Rejector MMSI: Maritime Mobile Service Identity MARK: Use as a temporary marker ( mark ) NM (Nautical Mile): 1NM = 1852m MSK (North Stabilization Kit): True bearing unit N UP (North-Up) The north is always pointed to the top center of the radar display. OWN TRACK: Display function of own ships track
Performance Monitor (PM): An additional unit to monitor the transmitted power and the receiving sensitivity of radar equipment. PI: Parallel Index Line PIN (Personal Identification Code): Information set by the user (personal code) PROC (Process): Target processing function RAIN (Anti-clutter rain): Rain/Snow clutter suppression. Relative vector: A targets movement predicted relative to own ship. RR (Range Rings): Fixed range ring RM (Relative Motion): Relative motion presentation Own ships position is fixed and other targets move relative to own ship. S/X Band: Radio frequency bands S: 3GHz band, X: 9GHz band SCANNER: Antenna SEA (Anti-clutter sea): Sea clutter suppression SET: The resultant direction towards which current, tidal stream and surface drift flow. SOG (Speed Over Ground): Speed relative to the ground. STAB (Stabilization): Stabilization
TCPA (Time to Closest of Approach): The time to approach the closest point from own ship. TM (True Motion): True motion presentation A presentation in which own ship and any other target move depending on their individual movements. TRAILS: Function of displaying tracks of other ships. TRIAL (Trial Maneuver): Trial maneuvering True Vector: A targets true movement predicted as the result of entering own ships direction and speed. VRM (Variable Range Marker): Variable range marker WATER (Water Stabilization): Stabilization relative to the water

Performance Monitor

The radar performance (transmitted output power and receiving sensitivity) can appear on the radar display.
Easy InterSwitch Operation (Option)
By additionally installing an InterSwitch PC board, up to 3-units of the JMA-9900 series radar equipment can be combined and switched over by simple operation.

CONFIGURATION

Transmitted Output Power
Scanners and Transmitted Output Powers Radar Model JMA-9933-SA 12ft slot antenna JMA-9932-SA 12ft slot antenna JMA-9923-7XA 7ft slot antenna JMA-9923-9XA 9ft slot antenna JMA-9922-6XA 6ft slot antenna JMA-9922-9XA 9ft slot antenna Radar Configuration and Ships Mains
Radar Model Scanner Unit Performance Monitor JMA-9933-SA JMA-9932-SA JMA-9923-7XA JMA-9923-9XA JMA-9922-6XA JMA-9922-9XA NKE-1079 (*) NKE-1075A (*) NKE-1089-7 (*) NKE-1089-9 (*) NKE-1087-6 (*) NKE-1087-9 (*) NJU-64 NJU-63

TransmitterReceiver Unit

30kW 30kW 25kW 25kW 25kW 25kW

Band S S X X X X

Display Unit

Ships Mains

NTG-3037A NTG-3028 NCD-4263 220/230V AC50/60Hz3 100/110/220/230V AC 50/60Hz1 (*1)
(*1) JMA-9933-SA AC220/230V50/60Hz1MED only
Notes: 1. The drive motor for the scanner unit is available in 220/230V AC, 50/60Hzthree-phase type and 100/110/220/230V AC, 50/60Hzsingle-phasetype. JMA-9933-SA 220/230V AC50/60Hz1MED only 2. The scanner unit can be equipped with a deicing heater as an option marked with (*), instead of which -D shall be suffixed to the type name. 3. When using the ships mains of 440V AC as the radar power source, a step-down transformer shall be used. 4. The name plates for the radar components indicate as follows: Scanner Unit: Transmitter-receiver Unit: Display Unit: SCANNER UNIT TRANSMITTER-RECEIVER UNIT DISPLAY UNIT

EXTERIOR DRAWING

Fig.1.1 EXTRIOR DRAWING OF SCANNER UNIT, TYPE NKE-1079 Fig.1.2 EXTRIOR DRAWING OF SCANNER UNIT, TYPE NKE-1075A Fig.1.3 EXTRIOR DRAWING OF SCANNER UNIT, TYPE NKE-1089-7 Fig.1.4 EXTRIOR DRAWING OF SCANNER UNIT, TYPE NKE-1089-9 Fig.1.5 EXTRIOR DRAWING OF SCANNER UNIT, TYPE NKE-1087-6 Fig.1.6 EXTRIOR DRAWING OF SCANNER UNIT, TYPE NKE-1087-9 Fig.1.7 EXTRIOR DRAWING OF TRANSMITTER-RECEIVER UNIT, TYPE NTG-3037A Fig.1.8 EXTRIOR DRAWING OF TRANSMITTER-RECEIVER UNIT, TYPE NTG-3028 Fig.1.9 EXTRIOR DRAWING OF DISPLAY UNIT, TYPE NCD-4263 (SELF-SANDING TYPE) Fig.1.10 EXTRIOR DRAWING OF MONITOR UNIT, TYPE NWZ-158T (DESKTOP TYPE) (OPTION) Fig.1.11 EXTRIOR DRAWING OF CONTROL UNIT, TYPE NDC-1279T (DESKTOP TYPE) (OPTION) Fig.1.12 EXTRIOR DRAWING OF KEYBOARD UNIT, TYPE NCE-7721T (DESKTOP TYPE) (OPTION)

Fig.1.1 EXTERIOR DRAWING OF SCANNER UNIT, TYPE NKE-1079
Fig.1.2 EXTERIOR DRAWING OF SCANNER UNIT, TYPE NKE-1075A
Fig.1.3 EXTERIOR DRAWING OF SCANNER UNIT, TYPE NKE-1089-7
Fig.1.4 EXTERIOR DRAWING OF SCANNER UNIT, TYPE NKE-1089-9
Fig.1.5 EXTERIOR DRAWING OF SCANNER UNIT, TYPE NKE-1087-6
Fig.1.6 EXTERIOR DRAWING OF SCANNER UNIT, TYPE NKE-1087-9
Fig.1.7 EXTRIOR DRAWING OF TRANSMITTER-RECEIVER UNIT TYPE NTG-3037/3037A
Fig.1.8 EXTRIOR DRAWING OF TRANSMITTER-RECEIVER UNIT TYPE NTG-3028
Fig.1.9 EXTRIOR DRAWING OF DISPLAY UNIT, TYPE NCD-4263 (SELF-STANDING TYPE)
Fig.1.10 EXTRIOR DRAWING OF MONITOR UNIT TYPE NWZ-158 (DESKTOP TYPE)
Fig.1.11 EXTRIOR DRAWING OF CONTROL UNIT, TYPE NDC-1279T (DESKTOP TYPE) (OPTION)
Fig.1.12 EXTERIOR DRAWING OF KEYBOARD UNIT TYPE NCE-7721T(DESKTOP TYPE) (OPTION)

GENERAL SYSTEM DIAGRAM 1

Fig.1.13 GENERAL SYSTEM DIAGRAM OF RADAR, TYPE JMA-9933-SA Fig.1.14 GENERAL SYSTEM DIAGRAM OF RADAR, TYPE JMA-9932-SA Fig.1.15 GENERAL SYSTEM DIAGRAM OF RADAR, TYPE JMA-9923-7XA Fig.1.16 GENERAL SYSTEM DIAGRAM OF RADAR, TYPE JMA-9923-9XA Fig.1.17 GENERAL SYSTEM DIAGRAM OF RADAR, TYPE JMA-9922-6XA Fig.1.18 GENERAL SYSTEM DIAGRAM OF RADAR, TYPE JMA-9922-9XA

NKE-1079

SCANNER UNIT

0.6/1kV-DPYCY-1.5

SHIP'S MAIN AC100/110V 50/60Hz, 1, 200W

CIRCUIT BREAKER

SK-32C (5A)
COAXIAL CABLE HF-20D (JRC SUPPLY)
(OPTION) 14 CORES COMPOSITE CABLE H-2695110056 MAX 30MT 23 (JRC SUPPLY) NTG-3037 TRANSMITTER-RECEIVER UNIT
14 CORES COMPOSIT CABLE H-2695110056 MAX 35MT 23 (JRC SUPPLY)

NCD-4263 DISPLAY UNIT

SHIP'S MAIN AC100/110V 50/60Hz, 1 AC220/230V 50/60Hz, 3 800VA GYRO 250V-MPYC-7 LOG/DLOG 250V-TTYCS-1/250V-MYCYS-7 250V-TTYCS-1 AIS 250V-TTYCS-4 ECHO SOUNDER 250V-TTYCS-1 ALARM MONITORING 0.6/1kV-DPYCYS-1.5 SYSTEM 0.6/1kV-TPYC-6 AC220/230V 50/60Hz, 1 MED only H-2695110006 250V-TTYCS-4 ECIDS 250V-TTYCS-4 CONNING
Note: Eliminating the interference on frequencies used for marine communications and navigation due to operation of the radar. All cables of the radar are to be run away from the cables of radio equipment. (Ex. Radiotelephone. Communications receiver and direction finder. etc) Especially inter-wiring cables between scanner unit and display unit of the radar should not run parallel with the cables of radio equipment. Fig.1.13 GENERAL SYSTEM DIAGRAM OF RADAR, TYPE JMA-9933-SA

NKE-1075

SHIP'S MAIN AC100/110V 50/60Hz,1,100W

SEMI AUTO
GAIN SEA AUTO Press. Or, when the SEA button on RAIN TRACK 3min SEA the screen is pressed,SEMI AUTO is set. TRAILS 0.5min T PROC PROC1 The SEMI AUTO Menu will appear.
SEA A is displayed at the lower left of the radar screen.

Cancellation

. Or, press the SEA button
GAIN SEA A RAIN TRACK 3min TRAILS 0.5min T PROC PROC1

on the screen.

AUTO is released.
Note: When setting AUTO SEA / SEMI AUTO, the AUTO RAIN is set to the MANUAL mode. Both AUTO SEA and AUTO RAIN cannot be set at the same time.
In case of Using AUTO RAIN:

. Or, press the SEA

button on the screen.
RAIN AUTO is displayed on the radar screen.
GAIN SEA RAIN TRACK 3min TRAILS 0.5min T PROC PROC1
GAIN SEA RAIN AUTO TRACK 3min TRAILS 0.5min T PROC PROC1
AUTO is released using the same procedure that was used to set it.

Tuning Operations

Attention
When the receiver is detuned, the best video may not be obtained even if the maximum bar graph is displayed on the AUTO TUNE tuning indicator. In this case, adjust the [TUNE] control manually so that the best video is presented.
and select any range scale from 0.125 to 96 (or 120) NM. (The current range scale is displayed at the upper left of the radar display.)

pressing and longer by

The range scale becomes shorter by. pressing

ROTATE

Adjust the video to present the clearest targets. If there is no adequate target, adjust [TUNE] control to indicate the maximum bar graph on the turning indicator at the upper left of the radar display.
In case of Using AUTO TUNE: Procedures
AUTO 1.SEA/RAIN 1.MANUAL 2.TUNE MANUAL AUTO

Press button.

. Or, press MANUAL
AUTO in 2.TUNE will be set and AUTO will appear at the upper left of the radar display.
Repeat the procedures up to step 2 in case of using AUTO TUNE.
MANUALin2.TUNEwill be set and AUTO at the upper left of the radar display will change to MANUAL and AUTO TUNE mode will be cancelled.
Acquire and Measurement Data
For detailed operations for data acquisition and measurement, refer to Section 3.4 BASIC OPERATIONS and Section 4 MEASUREMENT OF RANGE AND BEARING.
End the Operation and Stop the System

Exit 1 Press

The radar transmission will end and the scanner will stop rotating. The indication TRANSMIT will be changed to STANDBY. Maintain the STANDBY mode if radar observation is restarted in a relatively short time. Observation can be restarted simply by pressing the [TX/STBY] switch.

1. TEST MENU SELF CHECK PANEL TEST

Click TEST.

The TEST Menu will appear.
ARPATEST 3. 4.MAGCURRENT OFF ON 5.PM OFF ON 6. ERROR LOGGING SYSTEM INFO
Ending the Sub1 menu. Click EXIT or MENU.
The TEST Menu will be closed.

PREPARATION

Tuning [TUNE]
This control is used to tune the receiver. If the receiver is detuned from the best level, the receiving sensitivity falls, and the targets on a long range or the small targets on a short range may be overlooked. In manual tuning, rotate the [TUNE] control clockwise or anticlockwise and adjust so that the target echoes are the clearest. If no suitable target is present, adjust the control so that the tuning indicator bar graph at the upper left of the radar display is maximized. After setting the radar to the TRANSMIT mode, it take about 10 minutes until the oscillation frequency of the magnetron is stabilized. Therefore, tune the receiver once again after about 10 minutes. For automatic tuning, set TUNE to ON in the AUTO Menu. (Refer to page 3-8).
Sensitivity Control [GAIN]
This control is used to control the radar receiving sensitivity. Clockwise rotation of the [GAIN] control increases receiving sensitivity and extends the radar observation range. If the sensitivity is too high, the receiver noise will increase to reduce the contrast of the targets with the background video and make the targets obscure on the display. To observe densely crowded targets or the targets on a short range, rotate the [GAIN] control anticlockwise to reduce the sensitivity so that the targets are easy to observe. Be careful not to overlook small and important targets.
Display Brilliance Control
This control is used to adjust the brilliance of the entire display. Clockwise rotation of the [BRILL] control increases the brilliance of the entire display. Adjust the [BRILL] control to obtain the best-to-see display with optimum brilliance.
Contrast Control [BRILL VIDEO]
The contrast of the radar video display can be adjusted in four levels. Press the PANEL button on the screen, then select VIDEO. Each time the brilliance button is clicked, the screen will switch to VIDEO. The current mode is displayed on the lower right of the radar screen. (The VIDEO indication will change to the PANEL indicated in several second.) Adjust the [BRILL VIDEO] switch to obtain the best-to-see video with optimum contrast.

The pull-down menu will appear and selection items are displayed in the menu.
2. PROC1 1. OFF 2. PROC1 3. PROC2 4. PROC3
Move the cursor with the trackball.
Set the cursor on the item to be selected and press the left-button on the trackball.
3. PROC2 1. OFF 2. PROC1 3. PROC2 4. PROC3
The pull-down menu will be closed and the setting is established.

3. PROC2

This method can be used in most of boxes where a numeric value is to be entered.

0.0-100.0kts

When the value is set as shown in the figure : The minimum and maximum (min-max) are displayed on the left side and the unit is also displayed if present.
To increase the value, move the arrow cursor to the position in the figure (upward triangle) with the trackball.
With the arrow cursor on the position in the figure , click the trackball section left button once.
The value will be increase in the minimum step.
To increase the value continuously:
Hold down the trackball section left button in the figure.

To decrease the value:

Move the arrow cursor to the downward triangle in the figure. The following procedures are the same as for increasing.
This method is used when a number of items have alternative selections of ON and OFF in one menu. (In this case, only one item is presented.)

NAV LINE

The status in the figure means that the item is OFF.
Move the arrow cursor to the position in the figure with the trackball.
With the arrow cursor on the position in the figure , press the trackball section left button.
A check mark will appear in the checkbox and the function will be turned on.
To turn off the function:
With the checkbox and arrow cursor position as shown in the figure , press the trackball section left button.

[] Switch Type

This method is used, for example, in switching the current menu to the next.

SUB1 MENU

A menu has an item as presented in the figure.

For a description on how to specify the numeric data display, refer to 5.6 Data Display.

TARGET ACQUISITION

It is important to adjust the controls [SEA] and [GAIN] properly in the automatic target acquisition mode to minimize the effect of sea clutter. Target acquisition can be performed in two modes, AUTO and MANUAL, and both modes can be used at the same time.
Automatic Acquisition [AUTO]
If untracked targets enter the guard zone when the maximum number of targets (50 targets) is already being tracked, targets with lower levels of danger will be cancelled and replaced.
Click GZ1 or GZ2 on the screen.
Automatic target acquisition will start. The target acquired will be marked with and its target ID No., which will move with the target. Its vector will appear within one minute.
When the Target ID No. display is set to OFF, any acquired target ship will not be given a target ID No.

0 -0.5NM

In the ACQ AUTO mode, the targets within a guard zone will be acquired automatically. The guard zone can be set arbitrarily. If a guard zone is not set, a guard zone of 3 NM and 45 degrees in the direction of the own ship will be set. (Guard Zone 1: Heading direction, Guard Zone 2: Sternward direction) For the setting method, refer to section 3.4 Set Guard Zones.
Guard zone 1 will come on when GZ1 is clicked. When GZ1 is pressed again, automatic tracking will turn off and the guard zone will be erased from the radar screen, but other ships that were being tracked shall continue to be tracked.

Guard Zone

Target that has entered the guard zone. The guard zone intruder symbol is displayed.
Target that has continued to intrude in the guard zone for one minute. The guard zone intruded symbol, acquired symbol and vector are displayed.
Target that has moved outside the guard zone. The capture symbol and vector are displayed. The guard zone intruder symbol is cleared.
Manual Acquisition [ACQ MANUAL]
If the maximum number of targets (50) is already acquired, then new targets cannot be acquired. To do so, cancel any current targets that are not required.

MANUAL

Move the cross cursor on to the target to be acquired, then press the left trackball button.
The acquired target will be marked with will appear within one minute. and its target ID No. Its vector
When the Target ID No. display is set to OFF, any captured target ship will not be given a target ID No.
Number of Targets and Acquisition Area Target to be acquired
To use the manual acquisition mode only without the automatic mode on concurrently, press [ACQ AUTO] to turn Automatic Acquisition OFF.
Manually acquired target. The initial acquisition symbol is displayed.
Target that has intruded into the zone for one minute. The acquisition symbol and vector are displayed.
Use of Automatic and Manual Acquisition Modes [GZ1GZ2] [ACQ MANUAL]

(OFF) Beeping (pee-poh) Acknowledgeable
CPA LIMIT and TCPA LIMIT: The setting values
Guard Zone Alarm [GUARD ZONE]
In setting a guard zone, it is necessary to adjust radar tuning, gain, sea clutter suppression and rain/snow clutter suppression to ensure that target echoes are displayed in the optimum conditions. The guard zone alarm is not generated for the targets that are not detected by radar.
The guard zone function is used to set a zone at an arbitrary range and to sound an alarm if a target intrudes into this zone. Refer to section 3.4 Set Guard Zones on how to set guard zones.

Guard zone

Guard Zone Alarm
Status Target entering the guard zone Symbol on CRT Alarm characters Alarm sound Beeping (pipipi) Acknowledgeable GZ Conditions An alarm sound is generated when a target enters the 0.5 NM range between the outer and inner rings.
Lost Target Alarm [LOST TARGET]
If the radar tuning, gain, sea clutter suppression and rain/snow clutter suppression are not appropriate, the lost target alarm may be generated frequently, so that adjustments should be made carefully.
When it is impossible to continue tracking any acquired and tracked target, the LOST target alarm will be generated. The typical causes for this alarm are shown below, but they are not limited to these: The target echo is very weak; The target has entered the shadow of land or a large ship and its echo is not being received; The target echo is hidden by sea clutter.

Lost target

Lost Target Alarm
Status Lost target Symbol on CRT Alarm characters LOST Alarm sound Beep sound (pee) Acknowledgeable Conditions The alarm will sound once when a lost target symbol is displayed.
System Function Alarm [ARPA (DATA)]
When an abnormal state of an input signal or a problem in the processing circuitry occurs, a character string or alarm is generated. When an alarm occurs for any ARPA function, ARPA (DATA) will appear in the WARNING display area, but no indication is made in the ARPA information display. The cause of the alarm may be an operational error in ARPA, so please contact the service depot or manufacturer.
Gyro Set Alarm [SET GYRO]
The North Stabilizing Kit (NSK) in this system receives signals from a gyro. Even if the power is turned off, the system will track gyro motions. However, the system stops tracking the gyro if the power of the master gyro is turned off or if there are any problems with the line. When the power of the master gyro is turned back on, the SET GYRO alarm will be generated. If this alarm is sounded, set the gyro.

NOTE: Keep off condition. If the test pattern of the monitor is displayed, it can be returned to the previous screen with "OPTION2" or by left-clicking the mouse.

2 PANEL TEST 2-1 KEY

Refer to (2) Checking panel in Section 8.1.1 Function Check on Test Menu.
Click the TEST on the screen.
The TEST menu will appear.

TEST MENU PANEL TEST

Click PANEL TEST.
The PANEL TEST Menu will appear.

KEY BUZZER LAMP

Click KEY.
1.KEY is set and the control panel diagram will appear on the display. When a key on the control panel of the actual equipment is pressed, the portion corresponding to the pressed key in the panel diagram will turn the color.
The TEST Menu will be finished.

2-2 BUZZER

Refer to (2) Checking Panel in Section 8.1.1 Function Check on Test Menu.

TEST MENU

PANEL TEST 1. 2. 3. KEY BUZZER LAMP
The BUZZER Menu will appear. A beep of the buzzer indicates that the operation is normal.

2-3 LAMP

Click LAMP.
The LAMP Menu will appear. The key backlight is turned on, the operation is normal.
Note: When performing a LAMP test, the operation cannot be checked if the brilliance level of the key backlight is at maximum. (The brilliance will not change)
3 ARPA TEST 3-1 SIMULATOR
Refer to (3) Checking ARPA in Section 8.1.1 Function Check on Test Menu.

Press mode.

TEST MENU ARPA TEST

Click SIMULATOR.

1.SIMULATORwill be selected and the pull-down menu will appear.
1.SIMULATOR 1.OFF 1.OFF 2.TEST VIDEO 2.SCENARIO1 3.SCENARIO2 STATUS 3. 4.SCENARIO3 5.SCENARIO4 6.SCENARIO5 7.SCENARIO6
Select any setting item of ARPA Simulator in the pull-down menu and press any of 1 to 7.

Click TESE.

Note: In normal operation, it is necessary to turn off the "SIMULATOR".

TEST VIDEO

1.SIMULATOR 1.OFF 2.TEST VIDEO 1.OFF 1.OFF STATUS 3. 2.VDG 3.VDH 4.VDL 5.VDIN

Click TEST VIDEO.

2.TEST VIDEO will be selected and the pull-down menu will appear.
Select any setting item in the pull-down menu and press any of 0 to 5 numbers.
3-3 STATUS Procedures 1 Click TEST on the screen. Or click OPTION1 key.

Poor Contact in Terminal Board of Inter-Unit Cables
Poor contact in terminal board The cable end is not fully treated, so that it is earthed or contacts with another terminal. Disconnected cable wire
Poor Contact of Connector within Unit
Reference: This radar equipment is provided with the standard spares as shown in Table 8.8.

Table 8.8

Name Fuse Type/Code MF60NR-0.5A (5ZFAD00013)

Spares (6ZXRD00198)

Shape (mm) In use 4 Spare 12 Parts No. F1 to F4 Location Display NSK Circuit

6.4 30

Table 8.9

Special Parts

JMA-9933-SA
Name Magnetron Circulator TRHPL Type M1302 NJC3310 TL378A Manufacturer NJRC NJRC NJRC Location Transmitterreceiver Transmitterreceiver Transmitterreceiver Code 5VMAA00032 5AJBV00002 5VLAA00032

Parts No. V201 A201 A203

[II] JMA-9932-SA
Parts No. V201 A101 A303 Name Magnetron Circulator TRHPL Type M1302 NJC3320 TL378A Manufacturer NJRC NJRC NJRC Location Scanner Scanner Scanner Code 5VMAA00032 5AJBV00004 5VLAA00032

[III] JMA-9923-7XA/9XA

Parts No. V1 A201/A202 A203 A302 Name Magnetron Circulator Diode Limiter Pin Attenuator Type M1568B(J) FCX68 NJS6930 NJS6926 Manufacturer NJRC TOSHIBA CORPORATION NJRC NJRC Location Transmitterreceiver Transmitterreceiver Transmitterreceiver Transmitterreceiver Code 5VMAA00082 6AJRD00001 5EZAA00024 5ENAC00019

[IV] JMA-9922-6XA/9XA

Parts No. V1 A101/ A102 A303 Name Magnetron Circulator Diode Limiter Type M1568B(J) FCX68 NJS6930 Manufacturer NJRC TOSHIBA CORPORATION NJRC Location Scanner Scanner Scanner Code 5VMAA00082 6AJRD00001 5EZAA00019
Table 8.10 Location Scanner Scanner Scanner Transmitterreceiver Transmitterreceiver Transmitterreceiver Transmitterreceiver Display Display Display Display Display Display Display Display Display Display Display Display Display Motor with gear Motor with gear Motor with gear Modulator Receiver
Repair Circuit Block (JMA-9933-SA) Type MPEM30030 MPEM30110 MPEM30092 NMA-1253-1 NRG-88 CBD-1682 CMC-1205 CBD-1661 CQD-1949 CMJ-462A/B CQC-1094 CCK-900 CCK-901 CCK-902 CMC-1218 CDC-1209 NQA-4172 NQE-3141 7WSRD0002 CCK-906 (Option) Remarks AC220/230V 3 AC220/230V 3 (MED Only) AC100/110V 1 Including PC210 (CPA-209) Excluding Magnetron CEA-334-1 Including MIC

Circuit Block

Power supply circuit T/R control circuit Power supply circuit Terminal board circuit NSK/LOG I/F circuit Mother board Panel circuit-1 Panel circuit-2 Panel circuit-3 Display control circuit Signal processing circuit AIS I/F circuit InterSwitch circuit LCD display LCD control unit
Table 8.11 Location Scanner Scanner Scanner Transmitterreceiver Transmitterreceiver Transmitterreceiver Transmitterreceiver Display Display Display Display Display Display Display Display Display Display Display Display Display
Repair Circuit Block (JMA-9932-SA) Type MPEM30030 MPEM30110 MPEM30092 NMA-534-1 NRG-222 CBD-1682 CMC-1205 CBD-1661 CQD-1949 CMJ-462A/B CQC-1094 CCK-900 CCK-901 CCK-902 CMC-1218 CDC-1209 NQA-4172 NQE-3141 7WSRD0002 CCK-906 (Option) Remarks AC220/230V 3 AC220/230V 1 (MED only) AC100/110V 1 Including PC210 (CPA-209) Excluding Magnetron CEA-334-4 Including MIC

Replacement of PARTS Periodically
The parts shown below, it is need to exchange periodically.
Parts 1. Magnetron 2. Motor 3. LCD 4. Fan Motor 5. Lithium battery
Exchange Standard 4,000 hours 10,000 hours 50,000 hours 20,000 hours 3 years
Replacement of Magnetron (V1/V201)
Remove the shield cover of the modulator and check that no charge remains in the high-voltage modulator circuit. Then, remove the socket of the magnetron. Removing the screws fixing it can demount the magnetron. When mounting a new magnetron, do not touch the magnet with a screwdriver or put it on an iron place. 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 is 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. (3) After transmission is made for about 15 minutes, conduct the tuning adjustment. (4) Adjust RV1 within the receiver so that the bar graph of the tuning indicator on the display reaches the reading 10 without saturation.

< Scanner: NKE-1075A

Magnetron Exchange Procedure

Open portside cover.

Magnetron

Heading

Terminal
Remove the reads of magnetron on terminal. Loosen 9 bolts A. And remove 2 attached plates.
Caution Be careful of the handling of a magnetron. Exchange Magnetron. Attach Magnetron, plates, reads. Setting up scanner unit.

Bolt A

Magnetron Attached Plate

< Scanner: NKE-1087

Open starboard cover of scanner. Loosen 4 screws A. And remove magnetron-cover.
Screw: A Remove Magnetron-cover
Remove Magnetron-leads at the terminal. Remove 4 screws B. Remove The Magnetron.