I would recommend leaving it on. You want to make sure it soaks as long as
possible and then test it before shipping.
Keysight soaks the 3458A before testing and it makes sense since you want
to calibrate the meters as if they are in use 24/7.
Inspect the supplies and make sure you have no leakin
I have a 3457A which does not get a lot of use, but it has not been
calibrated for years, and I need to get it calibrated as I need to make
some measurements of greater accuracy than usual. The 3457A is scheduled to
go to Keysight a week from today. I'm wondering if its best to keep it
powered up u
