Hioki ST5520-01 - Page 124

116
Using the RS-232C Interface
When connecting the instrument with a computer
Use a crossover cable with 9-pin D-sub (socket contacts) connectors.
Crossover wiring
DCD 1
RxD 2
TxD 3
DTR 4
GND 5
DSR 6
RTS 7
CTS 8
9
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9
9-pin D-sub
(socket contacts)
Instrument side
9-pin D-sub
(socket contacts)
IBM PC compatible
computer
Pin No. Pin No.
Recommended cable: Hioki 9637 RS-232C Cable (9pin-9pin/1.8 m)
When connecting a controller with a 25-pin D-sub port
Use a crossover cable with a 9-pin D-sub (socket contacts) and a 25-pin D-sub (pin
contacts) connector.
As in the gure shown below, the RTS and CTS pins are shorted and crossed to the
DCD in the other connector.
DCD 1
RxD 2
TxD 3
DTR 4
GND 5
DSR 6
RTS 7
CTS 8
9
2 TxD
3 RxD
4 RTS
5 CTS
6 DSR
7 GND
8 DCD
20 DTR
9-pin D-sub female
Instrument side
25-pin D-sub male
Controller side
Pin No. Pin No.
Recommended cable: Hioki 9638 RS-232C Cable (9pin-25pin/1.8 m)
The combination of a dual 25-pin D-sub (pin contacts) cable and a 9-pin to 25-pin
adapter cannot be used.