User manual

Chapter 3 Software Overview
© National Instruments Corporation 3-43 NI-DAQ User Manual for PC Compatibles
Figure 3-15. Basic Waveform Generation Application
WFM_Load
WFM_Group_Setup
WFM_Group_Control
(operation = CLEAR)
WFM_Scale
Iterations > 0
WFM_Op
WFM_Rate
WFM_Group_Control
(operation =START)
Convert floating-point voltages to binary values.
Load waveform buffer, specify
iterations, and start waveform.
If iterations > 0, the
waveform generation
is complete.
Ye s
No
Any more data to output?
No
Ye s
Clear waveform.
Start background waveform generation.
Set the update rate.
Convert output rate to
timebase and interval.
Load waveform buffer
and specify iterations.
Assign channels to the
waveform generation group.
WFM_ClockRate or
WFM_Set_Clock
WFM_Check