On Sat, 6 Jun 2020 at 12:18, Florian Teply <[email protected]> wrote:
> Funny thing how things work out time-wise: I had a discussion yesterday > on the very topic during re-audit for ISO 9001. > Yes, it is. In basic terms, verification in metrology is a very slimmed down > calibration: For a calibration, you essentially check every range of > your instrument at usually five or more spots within that range in > order to determine accurracy of your instrument in each range. > For a verification, you do this only at the spot where you intend to > measure. So if you were to measure a nominal 7.2V source, you'd compare > the reading of your meter with your, say, known good 7.5V reference > instead of doing a full calibration of the meter. > > So, in order to determine whether or not your chinese voltage reference > meets its specs, you'd check your meter against, say, the > well-characterized LTZ1000A you happen to have in your lab. > > Strictly speaking, you still have to do it as carefully as you would do > a real calibration, taking all known effects into account, but it's > still much less time-consuming than a full calibration as you check only > one single point instead of all possible ranges with five points each. > > Does this help answer your questions or did I just bring up more > questions than answers? > Yes. I wish VIM was a bit more explicit about it. A single sentence just does not do it justice. best regards, > Florian > Dave _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
