Ai Pause Trigger Signal; Using A Digital Source; Using An Analog Source; Getting Started With Ai Applications In Software - National Instruments cDAQ-9133 User Manual

AI Pause Trigger Signal

You can use the Pause Trigger to pause and resume a measurement acquisition. The internal
sample clock pauses while the external trigger signal is active and resumes when the signal is
inactive. You can program the active level of the pause trigger to be high or low.

Using a Digital Source

To use the Pause Trigger, specify a source and a polarity. The source can be either from PFI or
one of several other internal signals on your cDAQ controller. Refer to the Device Routing in
MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information.

Using an Analog Source

Some C Series modules can generate a trigger based on an analog signal. In NI-DAQmx, this is
called the Analog Comparison Event.
When you use an analog trigger source, the internal sample clock pauses when the Analog
Comparison Event signal is low and resumes when the signal goes high (or vice versa).
Depending on the C Series module capabilities, you may need two modules
Note
to utilize analog triggering.
Pause triggers are only sensitive to the level of the source, not the edge.
Note

Getting Started with AI Applications in Software

You can use the cDAQ controller in the following analog input applications:
• Single-point acquisition
• Finite acquisition
• Continuous acquisition
For more information about programming analog input applications and triggers in software,
refer to the NI-DAQmx Help or the LabVIEW Help for more information.
NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual
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