National Instruments DAQ X Series, Руководство пользователя

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Chapter 5 Analog Output
© National Instruments 5-7 X Series User Manual
• AO Sample Clock Signal
*
• AO Sample Clock Timebase Signal
Signals with an
*
s u pport digital filtering. Refer to the PFI Filters section
of Chapter 8, PFI , for more information.
AO Start Trigger Signal
Use the AO Start Trigger (ao/StartTrigger) signal to initiate a waveform
generation. If yo
u do not u se triggers, yo u can begin a generation with a
software command.
Retriggerable Analog Output
The AO Start Trigger can be config u red to be retriggerable. The timing
engine will generate the sample clock for the config u red generation in
response to each p u lse on an AO Start Trigger signal.
The timing engine ignores the AO Start Trigger signal while the clock
generation is in progress. After the clock generation is finished, the co
u nter
waits for another Start Trigger to begin another clock generation.
Fig u re 5-4 shows a retriggerable AO generation of fo u r samples.
Figure 5-4. Retriggerable Analog Output
Using a Digital Source
To u se AO Start Trigger, specify a so u rce and an edge. The so u rce can be
one of the following signals:
• A p u lse initiated by host software
• PFI <0..15>
• RTSI <0..7>
• AI Start Trigger (ai/StartTrigger)
• AI Reference Trigger (ai/ReferenceTrigger)
AO S t a rt Trigger
AO Sa mple Clock
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