National Instruments GPIB-232CV, Руководство пользователя

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Appendix B Interfacing to a Serial Device
© National Instruments Corp. B-5 GPIB-232CV User Manual
Interfacing the GPIB-232CV to a DTE
For serial devices set up as DTEs, you must wire a DTE-to-DTE interface
cable, commonly known as a null modem cable. The cable must fool the
GPIB-232CV into thinking it is communicating with a DCE. Figure B-3
shows a typical null modem cable.
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Figure B-3. Null Modem Cable Configuration
If your serial device does not use the same hardware handshaking protocol
as the GPIB-232CV, you can either use a minimum configuration null
modem cable and use XON/XOFF handshaking, or you can use a custom
cable that will satisfy the GPIB-232CV hardware handshaking protocol.
The connections for a minimum configuration null modem cable are shown
in Figure B-4.