OpenHantek, Is fft plotting trusting?

[nelsonflorez-hub]

I took The spectrum generated in My Hantek 6022be with OpenHantek 3.4.0 to check it in excel with The tools of that suite intended for that purpose.
Converted The dsta in time to data in frecuency with excel Fourier análisis, used the math formula to convert dB into volts and The result is neither close to data plotted by OpenHantek.
I AM not trusting in fft plotted by OpenHantek.

Woudl to anyone explain what could be wrong?

[Ho-Ro]

Sorry, my glass ball is in repair.

What kind of data?
Pictures?
Screenshots?

[nelsonflorez-hub]

I compared the fft signal plotted by OpenHantek with the time based data generated by OpenHantek in the csv file with the Fourier data anaylsis of excel, used the math formula V=10log(dB/20) if both Match, and they didn't. Graphs are differente The formula used was I applied to the spectrum voltages obtained in excel. What I'm doing wrong? Thanks You in advance El jue, 5 de mar de 2026, 6:57 a.m., Martin Homuth-Rosemann < ***@***.***> escribió:

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Sorry, my glass ball is in repair. What kind of data? Pictures? Screenshots? — Reply to this email directly, view it on GitHub <#461 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/B7K5D7EJLEUXDVPQDDPBEEL4PFTUHAVCNFSM6AAAAACWHMOOBCVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTMMBQHE3TGMY> . You are receiving this because you authored the thread.Message ID: ***@***.*** com>