Appendix D
Interfacing to an RS-232 Device
D-8
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The cable configuration in Figure D-8 allows you to connect to the 9-pin
serial port of a personal computer. The cable in Figure D-9 shows how to
connect to the 25-pin serial port of a personal computer.
Figure D-8.
Cable Configuration for 9-pin DTE to 9-pin DTE with Handshaking
Figure D-9.
Cable Configuration for 9-pin DTE to 25-pin DTE with Handshaking
Interfacing the GPIB-232CT-A to a DTE without Handshaking
If your serial device does not require or use the same hardware handshaking
protocol used by the GPIB-232CT-A, you have two options:
•
Use a minimum configuration null modem cable which does not
support the hardware handshake lines and use XON/XOFF software
handshaking (if necessary).
To create a minimum configuration cable, connect the signals shown
in bold italics in Table D-3.
1
5
6
7
8
9
5
1
9
8
7
6
GPIB-232CT-A
9-pin DTE
Serial Device
9-pin DTE
1
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
1
5
6
7
8
9
GPIB-232CT-A
9-pin DTE
Serial Device
25-pin DTE
