8.3 Selecting the Connections and Protocol
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8
Chapter 8 RS-232C/GP-IB Interfaces
When connecting the
instrument to a PC
Use a crossover cable with female 9-pin D-sub connectors.
When connecting to a
instrument with a
female 9-pin D-sub
connector
Use a crossover cable with a female 9-pin D-sub and a male 25-pin D-sub
connector.
As the figure shows, RTS and CTS pins are shorted together and crossed to
DCD in the other connector.
Note that the combination of a dual male 25-pin D-sub cable and a 9- to 25-pin
conversion adapter cannot be used.
GP-IB Connector
Recommended cable:
Hioki
Model 9637 RS-232C
Cable (1.8 m)
Crossover Wiring
Female 9-pin
D-sub
Model BT3564 end
Female 9-pin
D-sub
PC/AT-end
Pin No. Pin No.
DCD 1 1 DCD
RxD 2 2 RxD
TxD 3 3 TxD
DTR 4 4 DTR
GND 5 5 GND
DSR 6 6 DSR
RTS 7 7 RTS
CTS 8 8 CTS
99
Recommended
cable:
Hioki
Model 9638 RS-
232C Cable (1.8 m)
Crossover Wiring
Female 9-pin
D-sub
Model BT3564 end
Male 25-pin
D-sub
PC-end
Pin No. Pin No.
DCD 1
RxD 2 2 TxD
TxD 3 3 RxD
DTR 4 4 RTS
GND 5 5 CTS
DSR 6 6 DSR
RTS 7 7 GND
CTS 8 8 DCD
920DTR
Connecting a GP-IB cable.
Recommended cable:
Model 9151-02 GP-IB Connector Cable (2 m)
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