Simrad argus - Serial Line

Argus Radar - SERIAL INTERFACE SPECIFICATIONS
988-10187-004 2.28
2.4 Serial Line 4
It is possible to receive RS422 or RS232 standard signal at 4800 bps indifferently on TB2
(422). Note that the circuit is able to receive at 4800 bps also with RS232 connection, but
this is not a standard connection according to the IEC 61162-2 standard.
RS 422 Interface Listener Connection
+ IN_4
"A" Data Input
- IN_4
"B" Data Input
SHLD_4
“C” insulated Ground
Input Load
≥ 3 KΩ
RS 232 Interface Listener Connection
- IN_4
RX Data Input
SHLD_4 and + IN_4
Insulated ground
Input Load
≥ 3 KΩ
This serial line complies to IEC 61162-1 and IEC 61162-2.
Accepted sentences: VBW and VHW.