Using A Digital Source - National Instruments NI 6238 User Manual

Note Refer to the NI 6238/6239 Specifications for the minimum allowable pulse width
and the propagation delay of PFI <0..5>.
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onboard clock, the generation resumes as soon as the pause trigger is
deasserted, as shown in Figure 5-4.
Pause Trigger
Sample Clock
Figure 5-4. ao/PauseTrigger with the Onboard Clock Source
If you are using any signal other than the onboard clock as the source of
your sample clock, the generation resumes as soon as the pause trigger is
deasserted and another edge of the sample clock is received, as shown in
Figure 5-5.
Pause Trigger
Sample Clock
Figure 5-5. ao/PauseTrigger with Other Signal Source

Using a Digital Source

To use ao/PauseTrigger, specify a source and a polarity. The source can be
one of the following signals:
• Input PFI <0..5>
• RTSI <0..7>
• PXI_STAR
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 8.x Help for more information.
5-7
Chapter 5 Analog Output
NI 6238/6239 User Manual