Interfacing to a Serial Device
Appendix E
GPIB-232CT-A for MS-DOS/Windows E-10
© National Instruments Corp.
Serial Device
25-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
6
Figure E-9. Minimum Configuration for 9-pin DTE to 25-pin DTE
Custom Cables
If your application requires a custom cable, you can construct one if you
have a thorough knowledge of the handshaking protocols involved. Review
the RS -232 characteristics of your serial device and build the cable to
properly connect the handshake lines of the two devices. If the
documentation for your serial device does not provide a thorough
explanation of its handshaking protocol, the ANSI/EIA-232-C standard is a
good reference, provided your device conforms to the RS-232 protocol.
Caution: Although handshaking might not be required, it is best to use
some form of handshaking to prevent loss of data.
