Hi Chris,
I plan to be near Chicago for few weeks around Xmas. I could take one of
my LTZ references with me, if you want to meet up and do some tests. I
don't have plans bringing any DMMs yet though.
As of references, you could build your own LM399 based or LTZ-based
references, and have somebody measure it for you. I did so for few
EEVBlog metrology section members earlier this year, with my PCB "KX"
modules which is LTZ1000-based design. I don't sell any finished units
though.
BR,
Illya
12/08/17 5:55, Chris Farley via volt-nuts пишет:
Greetings all,
As suggested several months ago, I'm put out an inquiry/request to see if
there's anybody in the area who has an HP3458A or better anywhere near me down
here in Sandwich, that I might be able to either A) compare readings to my
3456A, or possibly use (without removing from your premises, obviously) use to
calibrate my Fluke 332B. I have means to keep my units powered during
transport, so hopefully would not require hours of sitting to stabilize before
taking any readings. The 3456A's limitations are really being stretched, in
trying to calibrate a 332B with it alone.
Alternatively, is anybody aware of a Geller Labs (closed) voltage reference
available on the used market, or something of equal or better precision
available today? The Malone Electronics VREF10-003 looks very interesting,
with supposed 6mos accurace of ±300uV.
Regards,
Chris
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