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Re: NanoVNA-App in app calibration problem (bug?) #calibration #nanovna-app


 

On 3/1/23 2:25 AM, btomek@... wrote:
Roger, thank you for reproducing the experiment. We have clarity that it is a Bug after all.
I did an experiment in which I change the calibration data for a 4 specific frequencies by editing a copy of the .cal file in Notepad and I compared the s1p results for the correct cal file and the changed one.
Did you change the frequencies in the cal file, or the actual calibration data, keeping the frequencies the same?




There is probably some function that tries to smooth the calibration data, average it or filter it. Perhaps this function is used for interpolation if the calibration frequencies do not match the measurement frequencies.
In general, yes, there's likely some interpolation function.

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