[volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

[Dr. Frank]

>> Surely the AC errors if any must be associated with the A2 AC Convertor board - 03458-66502?  >> Dave

Why should this be a hardware error???

It's much much more probable, that this is a natural drift phenomenon. 
This is 'as found' and the 'as left' report is missing, that would tell 
the whole story.

Anyhow, this can very probably be adjusted by the regular calibration 
process.

Frank