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Measurement Computing Data Acquisition Systems rev.10.4 User Manual

Page 193

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Function Usage

The term waveform/pattern output is used extensively throughout the entries for the
functions of the form daqDac…. This refers to an analog waveform output modes and/or
digital pattern output modes. These terms describe output to digital-to-analog converter
(DAC) channels and/or digital input/output (DIO) channels that are synchronously
updated by a clock source defined by the application.

The daqDacTransferStop function will terminate the transfer of waveform/pattern output data; however,
it will not halt the waveform output on the specified channel. Output data already sent to the devices
waveform/pattern output FIFO will continue to be output until there is no more data in the FIFO. The transfer
may be re-initiated for the same waveform/pattern output transfer buffer or another buffer by again calling the
daqDacTransferStart

function. To terminate the waveform output as well as the transfer, refer to the

daqDacWaveDisarm

function. The output mode must be set to DdomDynamicWave via the

daqDacSetOutputMode

function prior to calling this function.

This function should be used only with waveform/pattern output modes.

Prototypes

C/C++

daqDacTransferStop(DaqHandleT handle, DaqDacDeviceType deviceType, DWORD
chan);

Visual BASIC

VBdaqDacTransferStop&(ByVal handle&, ByVal deviceType&, ByVal chan&)

Program References

None

Programmer’s Manual

908494

Daq API Command Reference 4.4-11