BTW, make absolutely sure you save the Zener current token value
somewhere safe. The rest of the cal constants can be recovered with some
good calibration standards, but the Zener value takes some pretty
specialized calibration.
I think the performance of the 7081 is really phenomenal given that the
reference is a non-ovenized Zener. It gets this by individually setting
the Zener current to the value that gives the minimal voltage change for
temperature change, then injecting a 2nd-order correction factor.
The moral of this story is that the current token setting is specific to
the Zener, and you'd need a good temperature-controlled chamber and a
lot of time to replicate.
--
Bill Ezell
--
They said 'Windows or better'
so I used Linux.
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