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Pin Assignments
D-11
3166-A2-GB20-10
November 1998
COM Port to Modem Cable
Use a serial crossover cable when connecting the COM port to a modem or other
external device. The following shows the pin assignments from the COM port to
the external device.
1
2
3
4
5
6
7
8
97-15669
COM Port
Non-Keyed
8-Position
Modular Plug
Tx Clock
Rx Data
Signal Ground
Tx Data
DTR
CD
RTS
Rx Clock
2
7
3
6
4
20
5
Tx Data
Signal Ground
Rx Data
DSR
RTS
DTR
CTS
Modem
DB25 Plug
No
Connection
No
Connection
Figure D-8. Com Port to Modem Cable