JMA-2343/2344 - ProNav
JMA-2343/2344 - ProNav
JMA-2343/2344 - ProNav
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9.3.6 Connecting an electromagnetic compass<br />
Attention<br />
• Ensure that the output of the inboard power supply and rectifier unit and connection to<br />
the power cable is correct.<br />
Erroneous connection or voltage may cause breakdown.<br />
It is possible to input information on bearing to the radar display unit if you use the electromagnetic<br />
compass with a NMEA0183 output terminal.<br />
(It is impossible to connect if you use the electromagnetic compass without a NMEA0183<br />
output terminal.)<br />
(1) Solder the data cable of electromagnetic compass (with NMEA0183 output) to the 8 pin<br />
connector. The polarity is as shown below and care should be taken in making this<br />
connection.<br />
8 pin connector (pin 3) Electromagnetic compass data (+)<br />
8 pin connector (pin 4) Electromagnetic compass data (-)<br />
Type of LTWD-08BFFA-L180 (JRC code: 5JCS00027) should be used as the 8 pin<br />
connector.<br />
• Unless the connection between the 8 pin connector and data cable is correct,<br />
correct data will not be obtained.<br />
(2) Connect the 8 pin connector to J4 (EXT1) on the rear panel of the display unit.<br />
EXT2<br />
GPS<br />
EXT1<br />
Electromagnetic compass<br />
F1<br />
POWER<br />
SC UNIT<br />
F2<br />
E<br />
J4<br />
Radar display unit rear panel<br />
1 7<br />
2 6<br />
3 5 4<br />
8<br />
Data -<br />
Data +<br />
8P connector (black)<br />
This completes the cabling of the electromagnetic compass.<br />
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