For you volt-nuts out there...
There's a fellow in California, John Lion (LionElectronicLabs at
BigPlanet dot com) who has a supply of temperature-chamber-aged and then
hand-selected LM-199AH references that he will install into an HP 3456A
DMM for a fairly reasonable price.
I don't know how
I need to clarify something about my earlier posting regarding the 3456A
upgrade.
The upgrade involves more than dropping in a new part; there are other
circuit changes also required. Lion Electronics does the conversion,
but doesn't supply the parts separately (after all, he's in business!).
