Furuno FAR-2807 Operator's Manual page 288

APPENDIX
Serial interface – output ports
TT for ECDIS, Track Control
Baud rate for output sentences are set on the Initial Settings menu. Complies with IEC
61162-1.
Dual differrential
drivers and receivers
SN751178NS
Logical High: A-B> +0.2V
Logical Low: A-B< -0.2V
Serial interface – input/output ports
Baud rate is fixed at 38.4 kbps. Complies with IEC 61162-2.
AIS Input port (RD-A, B)
Isolated RS485 Transceiver
LTC1535
Logical High: A-B> +0.2V
Logical Low: A-B< -0.2V
AIS Output port (TD-A, B)
Isolated RS485 Transceiver
LTC1535
Logical High: A-B> +4.0V
Logical Low: A-B> -4.0V
AP-32
=
=
TD-A
TD-B
RD-A
RD-B
GND
TD-A
TD-B
GND