Noise Spectral Density Measurement (Rt Hz) depends on window function about qa40x HOT 5 CLOSED

Hi @NoiseFree, can you verify if on your plot that the RMS is reported correctly regardless of window setting? Yes, I see the shift in trace as you do

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RMS value stays the same regardless of window setting

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This has been fixed for release 1.174 out later today. In this release, you can verify for RECT or other windows (HANN, FlatTop, etc) the displayed Y value of measured noise remains the same when RTHZ is enabled via the DBV context menu. Please confirm at your convenience, and thanks very much for reporting this.

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Link is here: https://github.com/QuantAsylum/QA40x/releases/tag/1.175.

Please re-open if you see an issue.

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Thanks for the fix! I can confirm that the measurement is not window dependent anymore.

But there is still an issue with the display. It seems that it's off by about 1 dB.

To proofe that I measured the spectral density of an 1MOhm resistor at room temperature. The circuit is the same non-inverting amp as shown above with the 50 Ohms removed.

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