Sorry Robert, but I'm not sure how high voltage is non-linear. If you mean saturation effects in the active probe itself, then I suspect that would be noticed during a DC calibration, wouldn't it? (Vout vs Vin as non-linear function)
Ralph McDiarmid, AScT Compliance Engineering Group Xantrex Technology Inc. From: [email protected] [mailto:[email protected]] On Behalf Of Robert A. Macy Sent: July 18, 2005 9:01 AM To: [email protected] Cc: [email protected] Subject: Re: calibration of high-voltage probe That works for "linear" systems. But, alas, high voltage is often nonlinear. Should not extrapolate. Whenever I get into these kinds of areas the words of Prof Ron Bracewell still ring in my ears, "...those measurements are a little like predicting the distance to a curb by measuring the slope in the center of the street." - Robert - On Mon, 18 Jul 2005 09:42:25 -0600 [email protected] wrote: > Ralph, > > When I've calibrated HV probes I have not always had a HV pulse source > that would allow calibration at the maximum rated probe voltage. In > that case I check the DC divider ratio at a low, medium, and high > voltage to confirm that there is no voltage coefficient. Then > calibrate the probe using a pulse that gives a useful measurement. > > Dave Cuthbert > Micron Technology This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
