Look on my website www.qsl.net/w3fpr for an easy to build calibrator for
your DMM.
73,
Don W3FPR
I looked at Don's neat little project, and really like it.
However, I just don't have time to scratch-build right now.
Out of curiosity, I did an EBay search for "voltage reference standard" and
found a guy named Joe Geller at gellerlabs.com. He sells an assembled
calibrator that is NIST traceable when delivered. They start at about
$25.00 and go up, but all are under $100. They are available in 2.5, 5, and
10 volt models. If I remember correctly, his claim for accuracy is about
0.1%. For a few dollars more, he will use a chip that doubles that
accuracy.
I ordered the basic model to test and/or calibrate my used HP 3466A. I will
put out a report on how I like it when it gets here!
Dan Allen
KB4ZVM
K2 S/N 1757
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