Serial Interface, Radar Processor Unit - Input Ports - Furuno FCR-2107 Series Operator's Manual

Appendix 5: Digital Interface
VSD - UAIS Voyage static data
Transmit of sentences:
Expected nominal interval of sentences: on demand
1. Type of ship and cargo category, 0 to 255
9. Regional application flags, 0 to 15
Serial interface, radar processor unit – input ports
Heading sensor
Baud rate is fixed at 38.4 kbps. Complies with IEC 61162-2.
Isolated RS485 Transceiver
LTC1535
Logical High: A-B> +0.2V
Logical Low: A-B< -0.2V
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
AP-72
RD-A
RD-B
GND