Kongsberg Simrad RA83, Service Manual, Page: 28 / 210

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Refer to 2.2.7.1B SCANNER UNIT/Modulator PCB J7 “Connector for IF Unit”
J2 (IF PCB) Connector for Front-End Module
pin No. Name Function
1 GND Ground
2 +5V FEM Power Supply
3 TUNE Tuning Voltage for FEM
4 IF IF signal (60MHz)
2.2.9.2 Processor Unit: LOGIC PCB
J701: Connector for POWER PCB
Pin No. Name Function
1 HTON Tx power ON (=5V)/OFF (=0V or open)
control to POWER PCB
2 SCANON Scanner Unit power ON (=5V)/OFF (=0V or open)
control to POWER PCB
3 N.C. Spare
4 +12VSC Bearing Pulse/Heading pulse from scanner unit
5 GND Ground for Main PCB
6 POWER+ power switch for POWER PCB
7 POWER- power switch for POWER PCB
* Shorting POWER+ and POWER- to ON
* Keep shorting more than 3 seconds to OFF
8 MVM Motor power monitor
9 HTM Tx power monitor
10 N.C. Spare
11,12 +40V Ship's source for external buzzer (+)
13,14 +40V-R Ship's source for external buzzer (-)
15 +24V +24V power for Main PCB
16-19 +5V +5V power for Main PCB
20-23 +12VD +12V power for Main PCB
24 -12V -12V powers for Main PCB
25-30 GND Ground for Main PCB