Oscilloscope Vrms, wrong!

[lemon]

Probably the issue with FR cutoff when I applied a compensation file, was due that I haven't restart the software Mi-Pro.

I changed the values of compensation file with positive values ​​instead of negative ones that I had.
But I seem that this applied of both channels and not only to Ch.A, at the "Spectrum Analyzer Processing.." the menu "Apply to" is inactivate.