v130G – Marine Satellite Communication System
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Ship Gyrocompass Connection
Connecting a Ship’s Gyrocompass
The ship’s gyrocompass provides true heading input to the antenna allowing the
antenna to target and acquire the desired satellite. Intellian always recommends
to connect a ship’s gyrocompass to the antenna using the gyrocompass interface
on the ACU. If the ship’s gyrocompass output is other than NMEA 0183 or NMEA
2000, the purchase of an NMEA converter may be required. THDs (Transmitting
Heading Devices) that are approved for carriage on certain classifications of vessel
or a GPS compasses with a compatible NMEA output and heading sentence can
be also used.
• NMEA 0183 Gyrocompass Interface Cable (Customer supplied)
• Connector Type: 2 conductors for NMEA 0183, Mini-C 5 pin for NMEA 2000
• NMEA heading sentence: xx HDT (4800 Baud, 8, N,1) If there is no HDT
sentence then use HDM sentence instead.
• NMEA 2000 heading PGN Number = 127250 (Vessel Heading)
Ship’s Gyrocompass
Connection
Strip the cable insulation back 5 mm (0.2")
Do not solder the cable
