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Chapter 2 Function Reference — WFM_Chan_Control
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National Instruments Corporation 2-403 NI-DAQ FRM for PC Compatibles
AT-AO-6/10, AT-MIO-16X, and AT-MIO-64F-5 only–You can use the PAUSE and
RESUME operations on group 1 output channels only if at least one of the following
conditions is true:
• Group 1 consists of a single output channel.
• Group 1 is using interrupts instead of DMA.
AT-AO-6/10, AT-MIO-16X, and AT-MIO-64F-5 only–You will see a FIFO lag effect when
you pause or resume group 1 channels. When you execute PAUSE for a group 1 channel, the
effective pause does not occur until the FIFO has finished writing all of the data remaining in
the FIFO for the specified channel. The same is true for the RESUME operation on a group
1 channel. NI-DAQ cannot place data for the specified channel into the FIFO until the FIFO
has emptied. Refer to the FIFO Lag Effect on the MIO E Series, AT-AO-6/10, AT-MIO-16X,
AT-MIO-64F-5, PCI-4451, and PCI-4551 section of Chapter 3, Software Overview, of the
NI-DAQ User Manual for PC Compatibles for a more detailed discussion.