Interfaces of the ACU
98-148248-C
Chapter 4: Interfaces
4-3
4444
Interf
aces
4.1.5 NET-H (NMEA 0183
1
connector, for future use)
1. Connect the pins according to the table above.
4.1.5.1 NMEA 0183
The NMEA 0183 connection supports EN 61162-1 (baud rate 4800, format 8N1) and EN
61162-2 (baud rate 38400, format 8N1). The ACU detects the baud rate automatically, you
cannot configure this interface.
Supported NMEA sentences, in order of priority:
• HEHDT (North seeking Gyro compass)
• GPHDT (GPS compass)
• HNHDT (Non-North seeking gyro compass)
• IIHDT (Integrated Instrument)
• HCHDT (Magnetic compass)
Recommended NMEA 0183 cable:
Two-wire constructed with one enclosed shield
Network signal pair:
• Size: No. 24 AWG (0.24 sq. mm) or heavier
• Characteristic impedance: 95 - 140 Ohm
• Propagation delay: 5 nanoseconds per meter, maximum
• 15 Twists (minimum) per meter
Outline (on the ACU)
Pin
Pin function
Wire color
1
Not connected
–
2
NET-H (NMEA 2000)
White
3
NET-L (NMEA 2000)
Blue
4
NET-S (NMEA 2000)
Red
5
NET-C (NMEA 2000)
Black
6
Not connected
–
7
RS-232 RX (NMEA 0183)
–
8
RS-232 GND
RS-422 shield, connect only
one end.
9
RS-422 Line B (+) NMEA 0183
10 RS-422 Line A (-) NMEA 0183
11 Not connected
–
Table 4-4: NMEA 0183/2000 connector, outline and pin assignment
1. (Hardware prepared for NMEA 2000, for future use). NMEA 2000 power: 9-16 VDC. NMEA 2000 LEN
(Load Equivalency Number): 2 (100mA)
1 11
Note
Any HDT sentence is supported as long as it complies with the following header
format: "$xxHDT", where xx can be two characters e.g. IN for $INHDT
Summary of Contents for SAILOR 60 GX
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