Hello Frank
After installing the short, it starts at around 100-200 nV on the screen and then slowly moves down to zero within 10 to 15 min.
Once reached zero it switches between 0 - 1 - 2 nV and once in a while 3 or 4 nV then back to 1 nV, where it stays most the time.
This is watched from a 3 m distance.
I tried to take a video but as soon as I get near the instrument it jumps to 10 nV or higher and needs a few minutes to settle again.
The 1 mV and 10mV range seem to be ok, measured with the Advantest R6144 as source.
I know, not the best connection with the alligator clips.