John The variability is something I had forgotten. You can't exactly repeat any test but you can come reasonably close. If I have a failure I generally grab a spec, confirm set up and witness the test again (if I can). I'm not against questioning a lab's result but the set up confirmation takes the guesswork out. A lab result that is other than pass means I have to fix it no matter what varies but I get your point. Merry Christmas to all. Regards' Dan Anchondo
From: [email protected] [mailto:[email protected]] On Behalf Of John Woodgate Sent: Friday, December 09, 2005 10:14 AM To: [email protected] Subject: Re: Problems with surge testing "Anchondo, Dan" <[email protected]> wrote (in <[email protected]>) about 'Problems with surge testing', on Fri, 9 Dec 2005: >I would suggest you fix the problem that was indicated by the lab test >results. All the differences between your set up and the test lab are >factors but at some point the test lab?s result needs to be reckoned >with. Failure or not. Maybe you didn't see other messages on this subject. EMC test results vary a lot, for reasons well understood, without anything being actually 'wrong'. And test labs sometimes make mistakes. -- Regards, John Woodgate, OOO - Own Opinions Only. Deadlines are 90% of deadliness. http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk - 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/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: Jim Bacher: [email protected] David Heald: [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/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: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
