And Rs-422 Connectors - Furuno FV-110GX Operator's Manual

Interfaces of the ACU
• Characteristic impedance: 95 - 140 Ohm
• Propagation delay: 5 nanoseconds per meter, maximum
• 15 Twists (minimum) per meter
3.1.6 RS-232 and RS-422 connectors
The ACU has an RS-232 and RS-422 connector for modem control. Use these connectors
to connect the ACU to the GMU.
Outline (on the ACU)
1
Table 3-5: RS-232 connector, male, outline and pin assignment, ACU
Outline (on the ACU)
1
Table 3-6: RS-422 connector, male, outline and pin assignment, ACU
3-4
Pi
n
1 Not connected
2 RXD
5
3 TXD
4 DTR
5 Ground
6 9
6 DSR
7 RTS
8 CTS
9 Receive Signal Strength
Indicator
Pin
1
2
5 3
4
5
6 9
6
7
8
9
Pin function
Pin function
Ground
Line A RXD (+)
Line B TXD (+)
Ground
Ground
Not connected
Line A RXD (-)
Line B TXD (-)
Not connected