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Rigol DHO804 Test and Compare Thread

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TurboTom:

--- Quote from: voltsandjolts on December 04, 2023, 09:04:27 pm ---Is this the broken Rigol Flat Top or the fixed Flat Top?  ;D

--- End quote ---

@Martin72's flattop window function is still the broken (original) one, the repaired one (albeit on a DHO1000, hence a different sampling rate) is shown in the screenshot.

2N3055:
To me, looking at (original) Rigol FFT windows, it looks like Flattop and Rectangular windows look pretty much the same.

ebastler:

--- Quote from: Martin72 on December 04, 2023, 09:25:03 pm ---Btw flat top...
Here a  siglent flat top pic with drastically reduced FFT-points.
I find the similarity with rigol's amazing.

--- End quote ---

So -- is the assumption that the Rigol uses the full duration of the record, to get to the indicated small frequency step -- but reduces that dataset by undersampling (using only every n.th data point) or some similar scheme?

Martin72:

--- Quote ---To me, looking at (original) Rigol FFT windows, it looks like Flattop and Rectangular windows look pretty much the same.
--- End quote ---

Argh, I have to check, not that I made a mistake.
Thank you!

Martin72:
@2N3055:

No, not a mistake...

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