[volt-nuts] Solartron 7081, other meters, and some voltage standards

[gbusg]

Joe,

After looking at the Spec page for Solartron 7081 (as found at ko4bb per a 
previous post by David Partridge) I find the Solartron to be very 
interesting.

Again, I don't have personal experience with it, but my thinking is that, of 
the instruments you've collected, your Solartron 7081 might actually be the 
most stable at 10Vdc. Certainly it has the tightest spec: 4.3 ppm 2nd year 
after calibration. Given the probable age of your 7081, I can imagine that 
its 10Vdc aging might indeed have slowed way down (to a very desirable slow 
creep)?

If any Solartron 7081 users are in the group, please chime-in with your 
experiences regarding its observed stability at 10Vdc.

Cheers!
Greg

--------------

Here's a copy of David's link to the Solartron manuals at ko4bb:


<http://www.ko4bb.com/cgi-bin/manuals.pl?dir=09%29_Misc_Test_Equipment/Solartron>

Hard copy from Telford Electronics in the UK (a photocopy, but not quite as 
up to date as the scan on Didier's web site).

Visit also <www.perdrix.co.uk> for a blog on repairing one of these.

Regards,
David Partridge

----------------


----- Original Message ----- 
From: "J. L. Trantham" <jltran at att.net>
To: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
Sent: Friday, September 02, 2011 6:36 PM
Subject: Re: [volt-nuts] Solartron 7081, other meters,and some voltage 
standards


OK.  Thanks for info that I did not know.  I'll have to actually read the
manual.

After the first set, it ranged from 10.00001 to 10.00010.  After the second
set of button pushes, it reads 10.00006 when connected to the 'black' face,
9.99995 when connected to the 'white' face unit, and 10.00046 when connected
to the 335A.

Now, the next question.

If you were to spend the money to get something calibrated, what would you
choose?

If you chose one of the voltage standards, you could use that to 'calibrate'
the meters, and, thus, the other standards.  However, if you chose one of
the meters, you could use that to 'calibrate' the standards, and thus, the
other meters.  And, another question, what, actually, can you get
'calibrated' on this list?

And, I agree with Dave.  A man with one watch ........

Thanks in advance.

Joe