8.3 Connections and Protocol Selection
98
Connecting to a PC/AT-
Compatible (DOS/V)
Machine
Use a crossover cable with female 9-pin D-sub connectors.
Connecting to an NEC
PC9801 or PC9821
Series Desktop PC
(excluding NX)
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 adapter cannot be used.
GP-IB Connector
Recommended
cable:
HIOKI
9637 RS-232C
CABLE (1.8 m)
Crossover Wiring
Female 9-pin D-sub
3541-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
9638 RS-232C
CABLE (1.8 m)
Crossover Wiring
Female 9-pin D-sub
3541-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:
9151-02 GP-IB CONNECTOR CABLE
(2 m)
9151-04 GP-IB CONNECTOR CABLE
(4 m)
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