Some weeks ago I went to a test lab as an observer on a CE marking project (IT product).
I participated on the radiated emission testing and some frequencies were above the limit line during the scan (peak measurement). Later on, the Quasi-Peak measurement lowered the values significant and therefore with the result Passed. Later on, I was told that they continued the testing by 10-15 minutes and was logging the maximum Quasi Peak value (repetitive QP meas) on spike with the highest value. During these 15 minutes, one or two QP measurement was above the limit and the result was changed from Passed to Failed. I have not seen this test procedure before. I’m familiar with just one QP measurement on each frequency and not Max Hold QP on each for 10-15 minutes. Anyone who have experienced the same? Is it a CISPR procedure or just some overzealous lab engineers? Best regards Amund - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
