FFT SuperSample adds Frequency Offset

#1 · 18/09/2023, 13:59

Hello, if I set the FFT Super Sample to 1, the resulting frequency spectrum will be shifted and the legend (e.g. central frequency, etc.) will not correspond to reality.

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#2 · 18/09/2023, 16:17

You mean the Histogram Oversampling? I cant reproduce that. 0, 1 or 2 offer no frequency shift.

#3 · 19/09/2023, 08:16

If I choose "1" there will be a shift.

Uploaded files:

#4 · 19/09/2023, 08:58

Please update your software. Looks like it is outdated.

#5 · 19/09/2023, 09:54

I updated to v.2.3.0 build 13914 and same behavior.

#6 · 19/09/2023, 13:24

Change to FFT Size Mode "FFT RBW" and it works. Seems to be an error in "RBW" mode.