Joe wrote:

I downloaded the Scope of Accreditation document for the above lab. Am I interpreting things incorrectly, or do the uncertainties for DC voltage source (in particular) look large?

Compare to:

<http://ts.nist.gov/standards/scopes/1050160.pdf>  [Fluke]

<http://ts.nist.gov/standards/scopes/1050020.pdf>  [Sandia]

<http://ts.nist.gov/standards/scopes/2005970.pdf>  [UII]

<http://ts.nist.gov/standards/scopes/2009720.pdf>  [Essco]

<http://www.home.agilent.com/agilent/redirector.jspx?action=ref&lc=eng&cc=US&nfr=&ckey=2276620&cname=AGILENT_EDITORIAL> [Agilent Loveland]

<http://www.home.agilent.com/agilent/redirector.jspx?action=ref&lc=eng&cc=US&nfr=&ckey=2276618&cname=AGILENT_EDITORIAL> [other Agilent facilities]


One very odd thing that I noticed when it was open was the remnants of a
wire that had been tack soldered to what looks like a voltage regulator.

Looks like someone either wanted a temporary test point for the unregulated 5v supply while they troubleshot a problem, or used the unregulated supply to power some modification that has since been removed. Kinda sloppy the way they left it.

Best regards,

Charles



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