6.3 Sea Clutters ·······················································································6-3
6.4 False Echoes ·····················································································6-3
7.1.1
Cleaning ........................................................................................................................... 7-1
7.1.1.1
7.1.1.2
7.2.1
7.2.2
Display Unit NCD-3901-2 .............................................................................................. 7-4
8. COUNTERMEASURES FOR TROUBLE
AND ADJUSTMENT
8.1 Function Check ·················································································8-1
8.1.1
Function Check ................................................................................................................ 8-1
8.1.2
8.1.2.1
8.1.2.2
8.1.2.3
8.1.2.4
8.1.2.5
8.1.2.6
8.1.2.7
8.1.2.8
8.2 Failure Check ·····················································································8-8
8.3 Troubleshooting ··············································································8-10
8.3.1
8.3.2
ATA Traubleshooting .................................................................................................... 8-12
8.5.1
NSK Unit Adjustment ................................................................................................... 8-19
8.5.2
8.5.2.1
8.5.2.2
8.5.2.3
8.5.2.4
Cleaning of the Radar ..................................................................................... 7-1
Cleaning of the ATA ...................................................................................... 7-1
Memory Test .................................................................................................. 8-2
Key Switch Test ............................................................................................. 8-3
Sensor Test ..................................................................................................... 8-4
Line Test ......................................................................................................... 8-4
ATA Status ..................................................................................................... 8-5
ROM Version ................................................................................................. 8-5
Error Logging ................................................................................................. 8-6
Adjusting Tuning .......................................................................................... 8-22
Adjusting Bearing ......................................................................................... 8-23
Adjusting Range ........................................................................................... 8-24
XIII