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Chapter 2 Function Reference — WFM_DB_Transfer
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National Instruments Corporation 2-415 NI-DAQ FRM for PC Compatibles
WFM_DB_Transfer
Format
status = WFM_DB_Transfer (deviceNumber, numChans, chanVect, buffer, count)
Purpose
Transfers new data into one or more waveform buffers (selected in WFM_Load) as waveform
generation is in progress.
WFM_DB_Transfer waits until NI-DAQ can transfer the data from
the buffer to the waveform buffers.
Parameters
Input
Output
Parameter Discussion
numChans indicates the number of analog output channels specified in the array chanVect.
Range: 1 or 2 for most devices.
1 through 6 for AT-AO-6.
1 through 10 for AT-AO-10.
chanVect is the array of channel numbers indicating which analog output channels are to
receive new data from the buffer.
Channel number range:
0 or 1 for most devices.
0 through 5 for AT-AO-6.
0 through 9 for AT-AO-10.
Name Type Description
deviceNumber i16 assigned by configuration utility
numChans i16 number of analog output channels
chanVect [i16] channel numbers
count u32 number of new data points
Name Type Description
buffer [i16] new data that is to be transferred