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9.3.11 Connecting an electromagnetic compass
Caution
● ● ● ● Make correctly connection between the output of ship's power and rectifier unit,
and power cable.
If neither connection nor voltage is right, it may cause an equipment failure.
Azimuth information can be input to a radar indicator unit if the electromagnetic compass is
equipped with a NMEA0183 output pin. (An electromagnetic compass without NMEA0183
output pin cannot be connected.)
To connect azimuth information data from an electromagnetic compass, use 8-pin connector P5 for
J5 (LTWD09BFFA-L180).
For the connection, connect NEMA0183+ from the electromagnetic compass to pin 3 and
NEMA0183- from the electromagnetic compass to pin 4.
Attached connector for connecting NMEA data
P5 (LTWD08FFA-L180)
Note:
The data that can be input from a magnetic compass is NMEA-0183 (HDT/HDM/HDG format).
Caution
● ● ● ● For data input from a magnetic compass, operation is not enabled even if
optional MARPA is connected.
The data input from GPS compass or gyro is required.
Connect
NEMA equipment to pin 3 of P5.
Connect input signal return from
NEMA equipment to pin 4 of P5.
136
input
signal
from
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