reconstitution of the wave

Hello

I use a wave generator to simulate a wave of 200 Hz and a capture card OR used to acquire the signal.

I think according to the Nyquist theorem, I must acquire at least 2 x the frequency of the wave.

I am thus, acquire, in samples keep, to 1000 Hz. I checked for a different number of samples and only 20 seemed ok for the reconstitution of the wave in excel.

When I try to simultaneously acquire two waves, (the two 200 Hz) I can't manage...

I am not very confident to acquiring high-frequency...

Hope someone can help me

I have attached my vi

Thanks in advance


Tags: NI Software

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