[volt-nuts] Rotek 320 AC/DC Calibrator

[J. Forster]

I'm not certain it's the same model, but the one I'm familiar with was in
a Wamco (formica) case, maybe 10" x 12" x 8" with some colored binding
posts. They has a little glass 'thermal convertor' about the size of a
pecan. The rest of the box was precision resistors and high quality
(Shallcross ?) switches.

There were a bunch of part-built ones surplused in the Boston area in the
late 1970s. Internally they had plexi panels with 0.1% and .01% resistors,
in decade values as I remember.

If that's the puppy, I know nothing more. I still have some of the parts
put away somewhere. I never had any paperwork AFAIK. They may have been
affiliated with Weston.

If this is not the puppy, never mind.  :)

-John

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> Does anyone know anything about this calibrator?
>
> Access to schematics or users manual?
>
> If you've no documentation on the 320, any 300 series calibrator from
> Rotek would help.  If you have no documentation but know or worked
> with them, that would help; What were their quirks?  Their basic
> specs?  Do you have an overview of what circuit methods they used to
> provide stable output?  Did they use any unobtanium?
>
> Thanks a bunch.
>
> P.S. I emailed and contacted Rotek without success.  All attempts to
> email them bounce back, so I'm not sure they are still around despite
> having a website up, but frozen dated 2002.
>
> Please reply privately to my email, as this may be considered off
> topic for some listmembers.
>
>
>
>
>
>
>
>
>
> Sincerely,
>
>
>
> Marv
> Philadelphia, PA
>
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