beautypg.com

Ap-27 serial interface – input ports – Furuno FAR-28x7 Series User Manual

Page 269

background image

APPENDIX

AP-27

Serial interface – input ports

Heading sensor

Transmission rate is selectable from 4800 bps and 38.4 kbps.

LTC1535

RD-A

GND

Isolated RS485 Transceiver

Logical High: A-B> +0.2V
Logical Low: A-B< -0.2V

RD-B

Log/navigator

PC-400

RD-A

RD-B

Photo Coupler

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