Using A Digital Source - National Instruments DAQ X Series User Manual

engine waits for another Start Trigger to begin another clock generation.
Figure 6-4 shows a retriggerable DI of four samples.
DI Start Trigger
DI Sample Clock
Waveform information from LabVIEW will not reflect the delay between triggers.
Note
They will be treated as a continuous acquisition with constant t0 and dt information.
Reference triggers are not retriggerable.

Using a Digital Source

To use DI Start Trigger with a digital source, specify a source and an edge.
The source can be any of the following signals:
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The source also can be one of several other internal signals on your DAQ
device. Refer to Device Routing in MAX in the NI-DAQmx Help or the
LabVIEW Help for more information.
You also can specify whether the measurement acquisition begins on the
rising edge or falling edge of DI Start Trigger.
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Figure 6-4. Retriggerable DI
PFI <0..15>
RTSI <0..7>
Counter n Internal Output
PXI_STAR
PXIe-DSTAR<A,B>
Change Detection Event
AI Start Trigger (ai/StartTrigger)
AO Start Trigger (ao/StartTrigger)
DO Start Trigger (do/StartTrigger)
6-9
Chapter 6 Digital I/O
X Series User Manual