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5.4.4 External digital trigger
An external digital trigger is generated when the external trigger source
pin detects a rising or falling edge as shown in Figure 31. The user can
configure the conditions triggered by the software. The pulse width of
digital trigger shall not be less than 20ns.
Rising edge trigger
Falling edge trigger
Figure 31 Rising and falling edges of digital signals
5.5 Trigger Mode
The analog inputs of the PCIe/PXIe-6301 support several trigger modes:
start trigger, reference trigger and re-trigger.
5.5.1 Start Trigger
In this mode, data acquisition begins immediately after the trigger as shown in
Figure 32. This trigger mode is suitable for continuous acquisition and
finite acquisition.
Sample
Acquisition
in Progress
Sample Interval
Trigger
Figure 32 Start trigger
