Appendix C
The Serial Connection
© National Instruments Corp.
C-3
GPIB-232CT User Manual
To interface other products to your GPIB-232CT RS-232 serial port,
consult your serial device manual to determine if the device is configured as
a DTE or DCE. Also, note how the control lines are used and whether they
must be driven for the serial port to operate. The GPIB-232CT's CTS line
must be driven either by the GPIB-232CT's DTR line or by a signal line
from the serial device used to implement a hardware handshake for data.
The following discussions contain some cabling examples from the
GPIB-232CT to a serial host device.
Interfacing the GPIB-232CT to a DCE
A correctly configured DTE/DCE interface is wired straight across:
GPIB-232CT pin 2 to DCE pin 2, pin 3 to pin 3, and so forth. Wired in this
manner, the GPIB-232CT can then interact to function properly
(handshake). Figure C-1 shows a properly configured DTE-to-DCE cable.
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Figure C-1. DTE-to-DCE Cable Configuration
