Hi
I was doing some measurements and gave me errors in RMS, I began to try and show the results, it is a sine 1Khz (Siglent SDG805) entering in 4 channels and a DMM Keysight 34461A, there are important differences between channels (first image 9%) and pressing AUTO again gets worse (second image 21%) without touching anything
This with the latest firmware (Rigol I sent him last week) self-calibration and reset to factory
Which may be happening?
Regards