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8 8 8

8.5 Replacement of Major Parts

yyyy

Magnetron Replacement Procedure for Transmitter-Receiver Unit NTG-3225

(1) Loosen the four screws and remove the

cover.

The screws are slotted captive screws.

Use a flat-blade screwdriver.

(2) 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.

Tightening metal

fitting

Remove the screw.

Modulator

Circulator

Loosen the four screws.

Preface7
Before Operation8
Precautions9
Equipment Appearance20
Glossary25
- Table of Contents31
Section 1 General and Equipment Composition44
Functions44
- Function of this System44
Features45
- Performance Monitor46
Configuration47
Exterior Drawings49
General System Diagrams65
Section 2 Names and Functions of Control Panel Keys73
Names of Display74
Names and Functions of Control Panel Keys84
Functions of Software Buttons89
- Chart Menu103
- Main Menu103
- Section 3 Basic Operation 3.1 Operation Flow107
Section 3 Basic Operation108
Operation Flow108
- Power on and Start the System109
- 3.1.2 Observe and Adjust Video111
- Acquire and Measure Data111
- Display and Measure with Reference to CCRP111
- End the Operation and Stop the System112
Observe and Adjust Video113
- Adjust Monitor Brilliance [BRILL]113
- Change Observation Range [RANGE＋/－]113
- Tune114
- Adjust Gain [GAIN]115
- Suppress Sea Clutter [SEA]116
- Suppress Rain/Snow Clutter [RAIN]118
- Reset Alarm Buzzer [ALARM ACK]119
- Adjust to the Best Image120
Operation Procedures121
- Move Cross Cursor Mark by Trackball121
- Operate Software Buttons121
- Operation of Combobox122
- Operation of Checkbox122
- Basic Menu Operation123
- Operation on Numeric Value, Latitude / Longitude and Character Input Menu125
- Overview of Menu Structure130
General Radar Operations131
- Interference Rejection (IR)131
- Switch Transmitter Pulse Length [GAIN]132
- Target Enhance (ENH)132
- Use Video Processing (PROC)133
- Switch Azimuth Display Mode (AZI Mode)134
- Switch True/Relative Motion Display Mode (TM/RM)135
- Move Own Ship's Display Position (off Center)136
- Display Radar Trails (Trails)137
- Zoom (X2)140
- Hide/Display Range Rings (HL Off)140
- Hide Graphics Information on Radar Display (Data Off)141
- Switch Day/Night Mode [DAY/NIGHT]141
- Adjust Operation Panel Brilliance [PANEL]141
- 3.4.14 Set True Bearing142
- 3.4.15 Set Own Ship Speed142
  - 3.4.15.1 Switch Own Ship Speed Device142
  - Input the Own Ship Speed (Manual Speed)143
- 3.4.16 Set Drift Correction144
Use Own Ship's Track Data145
- Set Display Color of Own Ship's Track (DISP Own Track Color)145
- Save Own Ship's Track Data146
- Cancel Saving of Own Ship's Track Data (Own Track Memory)146
- Clear Own Ship's Track Data (Clear Own Track)146
- Use Expanded Own Ship's Track (Own Track Type)147
- Use Water Depth Track (Water Depth Setting)148
- Use Water Temperature Track (Water TEMP Setting)149
- Use Current Track (Current Setting)150
- Loading and Saving of Own Track (File Operation)151
Display User Map153
- Create User Map (Mark/Line)153
- Set User Map Display (Mark Display Setting)156
- Edit User Map (Edit User Map)158
- Correct Position on User Map (Shift User Map)165
- User Map File Operation166
Use Route Function169
- Display Route169
- 3.7.2 Use Route Monitoring Function170
Applied Operations171
- Set Radar Signal Processing (Process Setting)171
- Set Radar Trails (RADAR Trails Setting)173
- Set Scanner Unit (TXRX Setting)175
- Set Own Ship Mark (Own Ship Setting)176
- Setting of Danger Detection (Danger Detection Setting)177
- Monitoring Dragging Anchor (Anchor Watch)178
- MOB (man over Board)179
- Set Radar Display (Display Setting)180
- Adjust Sound Volume (Buzzer Volume)182
- 3.8.10 Screen Capture Setting183
- Set User Option Keys [OPTION 1/2]184
- Set Navigation Data Display (Multi Window Setting)186
- 3.8.13 Setting of NAVTEX Message Display191
Use Function Key198
- Operation Procedures198
- Use Function Key [User]198
- Function Setting Menu Items199
- Overview of Function Operations (User Function Setting)200
- Overview of Saved Function Setting Data203
Use User Setting204
- Save Operating State (Save User Setting)204
- Load Operating State (Load User Setting)205
- Delete Operating State (Delete User Setting)205
Using File Manager206
- Operate File on the Card (File Manager)207
Using Chart210
- 3.12.1 Displaying the Chart210
- The Setting of the Chart Object to Display (Chart Menu)210
- The Display of the Information of Chart Published (ENC Issue Status)211
- The Setting of Contour (Contour Setting)211
- The Setting of Chart Type (Chart Type)212
Changing Operation Mode213
- 3.13.1 Changing to ECDIS Mode from RADAR Mode213
- 3.13.2 Changing to RADAR Mode from ECDIS Mode213
Section 4 Measurement of Range and Bearing215
Use of Navigation Tools216
- Using Cursor (Cursor)217
- Using Range Rings (Range Rings)217
- Using Electronic Bearing Lines (EBL1/EBL2)218
- Using Variable Range Marker (VRM1 / VRM2)222
- Using Parallel Index Lines (PI Menu)224
- Operating EBL Maneuver Function (EBL Maneuver Setting)230
- Operating EBL, VRM, and PI with Cursor232
Measurement of Range and Bearing235
- Measurement with Cursor Position (Cursor)235
- Measurement with Electronic Bearing Line and Variable Range Marker [EBL] [VRM]237
- Measurement with Two Arbitrary Points238
- Section 5 Operation of Target Tracking and Ais 5.1 Preparation239
Section 5 Operation of Target Tracking and Ais241
Preparation241
- Target Tracking Function241
- Collision Avoidance242
- Definitions of Symbols245
- Radar Display250
- Cursor Modes (Cursor)252
- Setting Collision Decision Criteria254
- Setting CPA Ring254
- Setting the GPS Antenna Location255
- Setting Vectors (Vector Time)255
Target Tracking Operation256
- Acquiring Target [ACQ]256
- Canceling Unwanted Tracked Targets [ACQ CANCEL]258
- Tracked Target Data Display [TGT DATA]259
- Displaying Target ID No. (Target Number Display)260
- Adding Tracked Target ID Name (Name)261
- Reference Target (Reference)262
- Operation Test (TT Test Menu)264
Ais Operation269
- Restrictions269
- Setting AIS Display Function (AIS Function)269
- Activate AIS Targets (Activate AIS)270
- Deactivate AIS Targets (Deactivate AIS)270
- Displaying AIS Information [TGT DATA]271
- Displaying Target ID No. (Target Number Display)275
- Setting AIS Filter (AIS Filter Setting)275
- Conditions for Deciding AIS Target to be Lost278
- Setting Conditions for AIS Alarm (AIS Alarm Setting)279
DECISION of TARGETS as IDENTICAL (Association)280
Alarm Display283
- Lost Target Alarm286
- Gyro Set Alarm287
Track Function288
- Past Position (Past POSN)288
- Target Ship's Tracks (Target Track)289
- File Operations294
Trial Maneuvering (Trial Maneuver)298
- Trial Maneuvering in the True Vector Mode299
- Trial Maneuvering in the Relative Vector Mode300
- Operation of Trial Maneuvering Function301
- Section 6 True and False Echoes on Display 6.1 Radar Wave with the Horizon303
Section 6 True and False Echoes on Display304
Radar Wave with the Horizon304
Strength of Reflection from the Target306
Sea Clutter and Rain and Snow Clutter308
False Echoes312
Display of Radar Transponder (Sart)315
- Display of Radar Transponder(Sart)315
Display of Ais-Sart317
- Section 7 Settings for System Operation 7.1 Settings at Installation319
Section 7 Settings for System Operation320
Settings at Installation320
- How to Open the Serviceman Menu320
- GYRO I/F Setting321
- Tuning (Tune Adjustment)323
- Tune Indicator Adjustment323
- Bearing Adjustment324
- Range Adjustment324
- Setting of True Bearing Value325
- Antenna Height Setting (Antenna Height)325
- Setting of CCRP (CCRP Setting)326
- 7.1 Settings at Installation327
Settings328
- Sector Blank Setting (Sector Blank)328
- 7.2 Settings329
- Setting of Bearing Pulses from Antenna (Output Pulse)330
- Slave Mode Setting (Master/Slave)330
- Date Time Setting331
- Data Path(Data Path Setting)332
- Input Installation Information333
- Setting the Alarm System (Alarm)334
- INS Setting337
- Setting of Transferring Track338
Adjustment339
- Adjustment of Target Tracking Function (TT)340
- Main Bang Suppression Level Adjustment (MBS Level)342
- Adjustment of Performance Monitor (MON)343
- 7.3 Adjustment345
Maintenance Menu346
- Initialization of Memory Area (Area Initial)346
- Save of Internal Memory Data347
- Restoration of Antenna Operation Time (TXRX Time)353
Section 8 Maintenance356
Routine Maintenance356
Regular Backup357
Maintenance on each Unit360
- Scanner Unit NKE-1125/1129/1130/1139360
- Wave Guide Tube (JMA-923B-7XA/9XA)363
- Coaxial Cable (JMA-933B-SA)363
- Transmitter-Receiver Unit NTG-3225/3230363
- Display Unit NCD-2096364
Performance Check365
- Check Performance on Test Menu366
Replacement of Major Parts373
- Parts Required for Periodic Replacement374
- Replacement of Magnetron374
- Replacement of Motor384
- Replacement of LCD Monitor389
- Replacement of Backup Battery390
  - Replacement of Battery on CMC-1323(Μatx Mother Board)390
  - Replacement of Battery on CBD-1831(UPS Battery)396
Section 9 Troubleshooting and After-Sales Service397
Fault Finding398
- List of Alarms and Other Indications398
- Operation Checking404
- Fuse Checking404
Trouble Shooting405
- Special Parts406
- Circuit Block to be Repaired407
- 9.2.3 if the USB Security Dongle Were Broken411
- Entering in the Functional Restriction Mode411
- 9.2.5 if both of Hard Disk Drives (CDD-717) Were Broken412
- 9.2.6 Entering in the Emergency Mode412
After-Sales Service415
- 9.3.1 Keeping Period of Maintenance Parts415
- 9.3.2 When Requesting for Repair415
- Recommended Maintenance415
  - Radar Failure Check List416
  - Disposal of the Unit417
Section 10 Disposal418
Disposal of the Unit418
Disposal of Used Batteries418
Disposal of Used Magnetron418
Disposal of Tr-Tube419
ABOUT the CHINA Rohs420
Section 11 Specifications422
Jma-933B-Sa Type Radar422
Jma-932B-Sa Type Radar423
Jma-923B-7Xa/9Xa Type Radar424
Jma-922B-6Xa/9Xa Type Radar425
Scanner Unit (Nke-1139)426
Scanner Unit (Nke-1130)426
Scanner Unit (Nke-1129-7/9)427
Scanner Unit (Nke-1125-6/9)428
- Transmitter Receiver Unit (Ntg-3225)430
11.9 Transmitter Receiver Unit (Ntg-3230)431
11.10 Transmitter Receiver Unit (Ntg-3225)431
Display Unit (Ncd-2096)431
Target Tracking Function434
Ais Function435
Performance Monitor (Nju-84)436
Performance Monitor (Nju-85)436
Appendix A437
Interswitch Instruction Manual437
Overview438
- Interswitch Setup438
- A.1.1 Overview438
Interswitch Operation440
- Operation Flow440
- A.2 Interswitch Operation440
- Inter Switch Menu441
- Change of Connection Pattern443
- Operating Connection Pattern Files (ISW Pattern444
- Operating Connection Pattern444
- Name of Display Units and Scanner Units445
- Scanner Units445
Reference446
- A.3 Reference446

Brand	JRC
Model	JMA-922B-9XA
Category	Marine Radar
Language	English

JRC JMA-922B-9XA User Manual

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