I'm measuring the 1KHz 2V p-p test signal on scope itself in ch1. I expect to see 1KHz, 3KHz, 5KHz,... harmonics (since it is square wave) but the spectrum is not like that. That's why I say the output is strange.And, how many points for you to calculate FFT? Is it 256, 512 points, 1024 points or?
Is my sample freq. too high? (1MHz. So, FFT bandwidth is up to 500K. If FFT points is too small, we can't identify 1K and it's harmonics)
I'm measuring 1KHz. When I change the time/Div to 1s, sample freq. will down to 100K samples/s. Than I can see 1KHz and it's harmonics.
Suggestion: Can you display something like frequency for FFT? User must calculate themselves. And, is it possible to measure FFT by cursor?
Can I click the signal on FFT and display the freq/value of that point?
Post time 2017-11-19 13:54:47
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