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Triggering without analog trigger circuity



I am new to LabVIEW and DAQ applications, so apologies if my question is naive.

I am using a PXIe-6341 MIO module in a PXI 1071 chassis. 

In my application I need to read an analog input signal and trigger a counter pulses generation, when the analog signal crosses a value of voltage in a sinusoidal oscillation experiment


I figured out that the MIO module doesn't support analog triggering as it doesn't have analog triggering circuity.


What do you think that is the best way to build up a software trigger vi as effectively as possible??


Also do you know if the counter pulses (that will trigger a camera acquisition), can be implemented in a loop?


Thanks in advance,


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Message 1 of 4

The best way to use DAQ for control is to use Hardware-Timed Single Point Mode.

Application case 1 of NI-DAQmx Hardware-Timed Single Point Lateness Checking should match your use case.

Control Lead | Intelline Inc
Message 2 of 4

Dear ZYOng,


Thanks a lot for your reply. It seems that the software triggering is not fast enough for this application.

Do you know if I can configure the trigger with the PXIe-4138 source measure unit?



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Message 3 of 4

You can trigger using 4138 but the SMU does not have any means of triggering based on output voltage and there are other sorts of synchronization possible.

Soliton Technologies

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