34
Installing ACU
Connecting Ship's Gyrocompass
For satellite tracking, you must connect a ship's gyrocompass to the antenna system through the gyrocompass
interface on the rear of the ACU. Intellian's ACU supports NMEA 0183 (GYRO) and NMEA 2000 gyrocompass
inputs. If the ship's gyrocompass output uses a different standard, a compass converter should be installed to
supply the required NMEA input. The NMEA 2000 gyrocompass needs to be purchased separately, please refer
to the "ACU Connector Pinout Guide" on page 35 for pin configuration.
Figure: ACU to Ship's Gyrocompass Cable Connection
How to Connect NMEA 0183 Gyrocompass Cable
1. Turn the screw located on the top of the 2-position terminal block counterclockwise enough using the
Phillips Screwdriver.
2. Connect NMEA 0183 Gyrocompass Cable to the terminal block.
Figure: NMEA 0183 Gyrocompass Cable Connection
Gyro
Cable
Phillips
Screwdriver
2-position
Terminal Block
NOTE
NOTE
When connecting the NMEA 0183 gyrocompass cable:
1. The positive and negative marks are shown on the top of the terminal block. Check
the positive and negative and correctly connect the cables.
2. Strip the end of the cables up to 5 mm (0.2"). Do not solder the cables.
2
1
ACU
Ship's Gyro
(Not supplied)
NMEA Input
2000/0183(GYRO)
3. Fully turn the screw clockwise to secure the cable. Apply equally to both positive and negative cables.
