Plotting Amplitude versus Frequency Data in LabVIEW

Updated Feb 26, 2018

Reported In

Software

  • LabVIEW

Issue Details

I am measuring vibration data with an accelerometer for my application, and I want to convert the data from G's versus time to amplitude versus frequency, for a frequency domain plot. Is there an easy way to do this in LabVIEW without using the Sound and Vibration toolkit?

Solution

The LabVIEW Full and Professional Development Systems include a basic FFT Power Spectrum VI which can be used to create simple frequency domain plots from time domain data. The VI, called "FFT Power Spectrum and PSD.vi", can be found in the Waveform Measurement palette (Waveform > Analog Wfm > Measurements) in the block diagram.

Additional Information

If your application requires more complex sound or vibration analysis, the NI Sound and Vibration Toolkit includes several pre-built VI's for quickly acquiring, analyzing, and logging acoustic and vibration measurements. You can find out more about this toolkit here.

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