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RS-232 connection
7
RS-232 Modem connection to HP Vectra PC (9-pin connector)
This cabling scheme is recommended for connecting the following:
Note To be used with US modem behavior only. The HP24542M cable connects pin 9 of
the HP Vectra to pin 22 of the DDP. This is not recommended when making your
own cables.
HP Vectra with 9-pin connector: 386/XX, 486/XX
HP Vectra interfaces: 24540B port A, 24541B port B
Existing HP cable: HP 24542M
25-pin male connector to DTC
1 - PGND -
2 - RD INPUT
3 - TD OUTPUT
4 - DCD INPUT
5 - GPO OUTPUT
6 - DTR OUTPUT
7 - SGND -
8 - RTS OUTPUT
20 - DSR INPUT
22 - CTS INPUT
9-pin female connector to HP Vectra
3 - TD OUTPUT
2 - RD INPUT
7 - RTS OUTPUT
8 - CTS INPUT
6 - DSR INPUT
5 - SGND -
1 - DCD INPUT
4 - DTR OUTPUT
9 - RI INPUT