SMSL PS 200 internal view

[Luca Sorrentino]

Yes, go to RTA, click "Stepped Sine", select "THD vs Level", and run it from -120dBFS to -60dBFS (it's enough).

View attachment 496830

Once the test is finished, go back to the main window, SPL & Phase, select dBr, zoom, and you get the below:

View attachment 496832

Red line is what was requested by the generator, green one is what was seen at the input of the ADC, and shown as "Linearity" here.

With the PS200, I got less than 0.1dB variation at -120dBFS, meaning 20bits of linearity.

Cheers

Thank you very much, I never notice that button in the RTA!