I "discovered" how to get that one more digit from my keithley 2015, on the front panel.
Pretty sure that this works for virtually all 6.5 digit keithleys. Post here if not.
Anyway, just set up the buffer to STORE a few readings. Hit ENTER. "* comes on for the time it takes to fill the buffer. Hit RECALL hit down twice and over once (you know the triangle keys). Voila, there is your average to 7 or 8 digits. Looks pretty stable on my meter.
Putting in a size of 1024 gets a nice noise reading (via STDDEV) on your "burning" reference.
Shorting the leads together and taking 1024 readings showed a noise floor of 760nV. All this on the 10V range.
Hope this is useful to those with pro handled DMMs.
