Hi Dave:
I remember this. We already had an HP 3458 that was calibrated to the Old Volt and I ordered a new one that came with a
"new volt" sticker. Tom, in the cal lab, connected them both to a voltage standard (maybe the Fluke 332) and the
difference in their readings was very close to the deference in the definitions. Note the voltage source does not need
to be accurate for this comparison, just stable.
http://www.prc68.com/I/HP3458DVM.shtml
http://www.prc68.com/I/Fluke332B.html
PS Let me know if you find a photo of the sticker.
--
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
-------- Original Message --------
IIRC, there are reports of 3458A's being sent to Agilent, and having a
sticker to say the "new" standard volt was used - I assume the last time
the volt was redefined.
I was chatting to someone from my radio club in the pub last night, and
somehow we got onto the definition of a volt. I'd like to try to research
this, and perhaps give a talk at our radio club on it. I'd like to get a
picture of a 3458A with such a sticker if I could.
Dave
Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT,
UK.
Registered in England and Wales, company number 08914892.
http://www.kirkbymicrowave.co.uk/
Tel: 07910 441670 / +44 7910 441670 (0900 to 2100 GMT only please)
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