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5.9 DELETING UNWANTED TARGETS

■ Deleting Targets.........................................................................................................5-30

5.10 ARPA SETTING

■ Simulation ..................................................................................................................5-33

■ Gate Size ....................................................................................................................5-35

■ Test Video..................................................................................................................5-37

6. TRUE AND FALSE ECHOES ON

DISPLAY

■ Radar Wave with the Holizon......................................................................................6-1

■ Strength of Reflection from the Targets.......................................................................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

■ Scanner NKE-1079/1075/1059/1052...........................................................................7-2

■ Transmitter-receiver Unit NTG-3037/3027 .................................................................7-4

■ Display Unit NCD-4111 ..............................................................................................7-5

■ Coaxial Cable (JMA-9833-SA)....................................................................................7-5

■ Wave Guide (JMA-9823-7XA/9XA)...........................................................................7-6

8. COUNTERMEASURES FOR

TROUBLE AND ADJUSTMENT

8.1 FUNCTION CHECK.......................................................................8-1

8.2 TROUBLESHOOTING .................................................................8-16

8.3 COUNTERMEASURES TO TROUBLE .......................................8-17

8.4 REPLACEMENT OF MAJOR PARTS

■ Replacement of Magnetron (V1/V101/V201) ...........................................................8-24

■ Replacement of TRHPL (A202/A303) (JMA-9833-SA/9832-SA) ...........................8-24

■ Replacement of Diode Limiter (A203/A303)

(JMA-9823-7XA/9XA, JMA-9822-6XA/9XA) ........................................................8-24

■ Replacement of PIN Attenuator (A302)

(JMA-9823-7XA/9XA, JMA-9822-6XA/9XA) ........................................................8-24

■ Replacement of CRT (V1) .........................................................................................8-25

JRC JMA-9822-6XA User Manual

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