In message <[email protected]>, dated Tue, 22 Jul 2008, "Kunde, Brian" <[email protected]> writes:
>I have worked with some labs who?s initial goals are to have >unqualified engineers setup their EUT and press a button on a computer >and in a couple hours the test is done with reliable data. Avoid such labs. Even if the results are reliable but show a problem, the results almost certainly give no clue as to the cause. Either the client gets no help or has to pay for a second set of tests, diagnostic, which isn't automated. >In my humble opinion, it is a misconception that fully automated, >unmonitored emissions testing can be done. I entirely agree. > I feel in most cases it is not practical if done right and takes >longer than a manual scan. I won?t get into details unless you want. >What I recommend is having the test software perform automated tasks to >assist and speed up the test while being witnessed by a qualified emc >technician or engineer and adapts the test dependent on the EUT and the >type of emissions it generates. Precisely. >I wouldn?t call this fully automated test but software assisted emc >testing. That way you are not depending on the software but the >training and experience of the person running the test and the software >is just a tool. That's what the lab should be providing. The only exception, I think, is if a test schedule worked out that way is then run repeatedly on further samples of EUT, e.g. for the 80/80 rule. That MAY be safely automated, if the results don't show outliers. >Nuff said. I disagree with the very last statement, so I said it all again, with feeling.(;-) -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex 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
