>There are a number of reference boards supposedly removed from 3458As
on eBay.
>Assuming they are non counterfeit (not necessarily a valid assumption
for items on eBay), how easy would they be to integrate into a box to
make a stable reference?
>The LTZ1000A chip is about $50 new, but to make a
I'd avoid alkaline batteries. I picked up a high resolution data logger to
monitor some long term voltages, and as it had extra channels I hooked up a
battery to it. The battery was meant as a sanity check. As it turned out, the
battery made a really nice thermometer!
It turns out the referenc
On Sun, 12 Mar 2017 at 17:03, Frank Stellmach
wrote:
> Hi Chris,
>
>
>
> Therefore, instead of poking around with these mediocre 10V
> "references", I'd look for a possibility to get access to a 3458A, maybe
> there's a friendly volt-nuts nearby.
>
> Frank
>
There are a number of reference boar
The navel is not just for collecting lint, you can also temp stabilize a
silver or mercury button cell there. Or in the armpit. Or up in other
cavities of the body. Preferrably measure very quick or at least at the
same time of day.
Hendrik
___
vol
Hi Chris,
I remember getting an 1.5V mercury cell with a 4 1/2 digit DVM kit, so
that's about the level of stability you can achieve with such a battery.
Alcaline batteries, and so on, forget about it.
For a Fluke 332A, you need on the order of 5ppm uncertainty for a proper
adjustment of the
Brooke wrote:
There are a few low cost voltage standards available where the maker has
an HP 3458. For example by Geller
Geller has been gone as a supplier since 2013 (most of the web site is
still up as an archive, but he is no longer selling the voltage
"references").
There are a few lo
