Comtech EF Data RCS11 - Manual (Page 79)

RCS11 1:1 Redundancy Switch Connector Pinouts
MN-RCS11 – Revision 9 5–21
5.9.2.3 TXB - ASI or G703 (J17)
Modem B TX Data Port (RD) is an ASI or G703 Unbalanced 75-Ohm Female BNC Connector.
RCS11 Switch must be ordered supporting either ASI or G703 interface..
5.9.2.4 RXA - ASI or G703 (J18)
Modem A RX Data Port (SD) is an ASI or G703 Unbalanced 75-Ohm Female BNC Connector.
RCS11 Switch must be ordered supporting either ASI or G703 interface.
5.9.2.5 TERR RX - ASI or G703 (J19)
The TERR RX User Data Port is an ASI or G703 Unbalanced 75-Ohm Female BNC Connector.
RCS11 Switch must be ordered supporting either ASI or G703 interface.
5.9.2.6 RXB - ASI or G.703 (J20)
Modem B RX Data Port (SD) is an ASI or G703 Unbalanced 75-Ohm Female BNC Connector.
RCS11 Switch must be ordered supporting either ASI or G703 interface.
5.9.3 FAULTS (J1)
The Fault Port is a 9-Pin Female ‘D’ Connector for HSSI/G703/ASI interface. The fault connector
is configured differently for this interface. Refer to Table 5-25 for pinouts.
Table 5-25. J1 Fault HSSI Interface Only (9-Pin Female 'D')
Pin No. Direction Status
1 Switch Fault Relay Common
2 Switch Fault Relay Normally Open
3 Mod Fault A Open Collector Input
4 Mod Fault B Open Collector Input
5 Ground GND
6 Switch Fault Relay Normally Closed
7 Demod A Fault Open Collector Input
8 Demod B Fault Open Vollector Input
9 No Connection NA
*
Note: Connect to Ground on power up to enable RS485 Mode