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How to get frequency at Max amplitude

I m acquiring a waveform from the DAC which as a maximum amplitude at a some frequency. I want to use that frequency at which the max amplitude is seen  for further processing. Now how can I detect the frequency at maximum amplitude ?
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Message 1 of 4

Try the Waveform Peak under programming>>waveform>>analog waveform>>waveform measurements>>waveform monitoring.


Hope this helps.

Now Using LabVIEW 2019SP1 and TestStand 2019
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Message 2 of 4

Hi micro,


your post is not fully clear to me...


It seems you need some FFT operation to get the max frequency peak.

Otherwise it makes no sense to ask for a frequency at a certain amplitude peak...

Best regards,

using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
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Message 3 of 4

You could try the Extract Single Tone Information vi (or the Extract Multiple Tone Information vi) in the waveform measurements palette.  The single tone version will find the frequency with the highest amplitude.


-Matt Bradley

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Message 4 of 4