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Chapter 1
Introduction
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National Instruments Corporation
1-3
it is in pass-through mode; all parallel port activity from the host computer
is routed to the pass-through parallel port. The NI-488.2 driver switches
the GPIB-1284CT into GPIB mode when a device or board is put online.
For information about pass-through printing in Windows, refer to the
section in Chapter 3,
.
The parallel-to-GPIB conversion circuitry is implemented in a
field-programmable gate array, which you can reconfigure with the
ctupdate
utility. For more information, refer to Appendix A,
. As parallel port standards evolve, National Instruments
provides updates to keep your hardware and software up-to-date.
Top Panel
Figure 1-1 shows the GPIB-1284CT top panel.
Figure 1-1.
GPIB-1284CT Top Panel
PO
WER
READ
Y
PASS THR
OUGH
TALK
LISTEN
Pass Through Connector
Computer
Connector
GPIB
Connector