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RS-232 connection
7
RS-232 Modem connection to HP 9000 with MDP or HP 3000 ATP modem ports
This cabling scheme is recommended for connecting to HP 9000 with MDP, or
HP 3000 ATP modem ports to the DTC.
Note To be used with US modem behavior only.
Existing HP cable: HP 40233A
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
9 - RI INPUT
20 - DSR INPUT
22 - CTS INPUT
25-pin male connector to HP host
1 - PGND -
3 - TD OUTPUT
2 - RD INPUT
8 - RTS OUTPUT
20 - DSR INPUT
7 - SGND -
4 - DCD INPUT
22 - CTS OUTPUT
6 - DTR OUTPUT
5 -