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APPENDIX
AP-28
Serial interface – input ports
Heading sensor
Baud rate is selectable from 4800 bps (non-IMO only) and 38.4 kbps. Complies with IEC
61162-2.
LTC1535
Isolated RS485 Transceiver
Logical High: A-B> +0.2V
Logical Low: A-B< -0.2V
RD-A
RD-B
GND
Log/navigator
Baud rate is adaptive with RX data. Complies with IEC 61162-1.
PC-400
Photo Coupler
RD-A
RD-B
470 ohm
This port is an opticoupler used to isolate I/F terminal on RD terminal.
Absolute maximum rating
Input
Forward current: 50 mA
Reverse voltage: 6 V
Output
Supply voltage: 16 V
High level output voltage: 16 V
Low level output current: 50 mA