HP 650 - Connecting to PC or Terminal with 25-Pin Connector; Connecting to Modem with 25-Pin Connector

Connecting to PC or Terminal with 25-Pin
Connector
Signal Router
PC or
Terminal
(25-pin) Signal
Rx 2 2 Tx
Tx 3 3 Rx
Gnd 5 7 Gnd
DCD * 1
DTR
†
4
DSR 6
RTS 7
CTS 8
* The DCD signal may be left unconnected if the router is configured to ignore DCD.
†
Note that the router must be configured to raise DTR. (Refer to “Configuration of Console Signals,”
page A-3.)
Connecting to Modem with 25-Pin Connector
Signal Router
Modem
(25-pin) Signal
Rx 2 3 Rx
Tx 3 2 Tx
Gnd 5 7 Gnd
DCD 1 8 DCD
DTR 4 20 DTR
DSR 6 6 DSR
RTS 7 4 RTS
CTS 8 5 CTS
RI 9 22 RI
Cables and Adapters
A-8