[Boatanchors] Dc Voltmeter Calibration

[David C. Hallam]

> I obviously need to calibrate my DC voltmeters.  I was setting the 300 
> VDC B+ on my signal generation after some repairs.  I used 3 
> voltmeters and got a spread of 45V among the 3 of them, low 285V and 
> high330V.  The low was a VTVM and the high  DVM.  What is a good 
> standard to use that won't break the bank to acquire?  I used to have 
> some mercury batteries but they are a "no, no" any more.
>
> David
> KW4DH 

After reading the various replies to my post about the accuracy of my 
voltmeters, I will retract my skepticism of the accuracy to DMD's. in 
general and mine in particular.  I bought a  voltage standard on eBay.  
I found my DMM very accurate while my HP 410B, 410C, and RCA WE-77 were 
off by varying amounts.

David
KW4DH

-- 
There are two possible outcomes: if the result confirms the hypothesis, then you've made a measurement.
If the result is contrary to the hypothesis, then you've made a discovery.
Enrico Fermi