8-port Serial PCI ACC Multiplexer Installation & Service Guide (30291-90508)

Appendix A 35
Interchange Panels
RS-232 Loopback
RS-232 Loopback
The RS-232 loopback cable signals are shown in Figure A-1.
Figure A-1 RS-232 Loopback Cable Signals
1
2
7
4
5
6
8
20
3
15
17
24
(Internal Clock)
(External Clock)
1
2
7
4
5
6
8
20
3
15
17
24
ID
ID
Signal Name
Chassis Gnd
Signal Gnd
RTS
CTS
DSR
DCD
DTR
TXD
RXD
TXC
RXC
ETC
Signal Name
Chassis Gnd
Signal Gnd
RTS
CTS
DSR
DCD
DTR
TXD
RXD
TXC
RXC
ETC