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Chapter 2 Function Reference — DIG_Grp_Mode
NI-DAQ FRM for PC Compatibles 2-168
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National Instruments Corporation
ackPol = 0: Acknowledge handshake signal is not inverted (active high).
delayTime = 0: Settling time is 0 ns.
You need to call
DIG_Grp_Mode only if you need a different handshake mode. Refer to your
board’s user manual for information about handshake timing and mode information.
Note (AT-DIO-32F Revision B boards only) Do not use a leading-edge, pulsed
handshaking signal for an input group. NI-DAQ cannot latch the data into the
port in this mode and, if new data is presented to the port before NI-DAQ reads
and saves the old data, the old data is lost.