[Test-Equipment] How to get a capacitor standard calibrated/validated/verified?

[Barry]

That's a good idea, but not sure where I could find a capacitor like that.  That's more or less how I intended to use the GR standard, but I'm just wondering if it is still within it's stated tolerance.

Thanks,
Barry - N4BUQ


 On Tue 01/11/11  2:19 PM , Ron Youvan ka4inm at tampabay.rr.com sent:
> Barry N4BUQ wrote:
> 
> > I have a General Radio 1409-X (0.5uF) capacitor
> standard for which I would like to know how close to 0.5uF it really is. 
> How would one go about getting this done?  It's not exactly a "calibration"
> procedure as much as it just a "check" but I assume a cal lab would do
> that.  Anyone know where I could get this done and approximately how much
> it would cost?
> > Note that this is for personal/hobby use and does
> not have to be NIST traced, etc.  I'm trying to repair my GR1617A whose
> standard capacitor failed.  I have a temporary "standard" I made that's
> close but I'm wanting to make something a bit better.  I'm wanting to use
> my 1409-X as a comparison cap to trim the new standard capacitor but don't
> know just how close my "standard" is to 0.5uF.
> Look into buying a new silver mica or polypropylene capacitor rated .1% (or
> better) instead and calibrate your "C" meter with it and then look at your suspect
> standard.-- 
> Ron  KA4INM -    Ron  KA4INM - Did you know ...
> ... that no-one ever reads these things?
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