frequency spectrum not corresponding dt, noob question

See attached vi, I input an array of values to 0.38 in the wave function of build and value of dt 0.02 s. So my wave has an amplitude of 0.38 with a frequency of 5 Hz.

I fed my waveform a Spectra vi extent and this is! the graph I see has a dominant amplitude of 0.38 with a frequency of 0hz. How is the dominant amplitude is not the frequency of 5 Hz?

NO!

Your waveform has an amplitude of 0,328, a sample rate of 5 S/s and no frequency - since it's a line.  Put a graph on the entrance of the FFT

Tags: NI Software

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