John Wrote:
>The EMC Directive doesn't demand ANY testing. Maybe, but it demands EVIDENCE of compliance. Annex IV - 1 Two Definitons of "Evidence" Law: The documentary or oral statements and the material objects admissible as testimony in a court of law. Law: information drawn from personal testimony, a document, or a material object, used to establish facts in a legal investigation or admissible as testimony in a law court. The rest of your email witnesses daily practices in factories, but is strictly spoken bad advice. It's a shortcut and if routed without care could have serious consequences. The test labs suggestion is basically right, and the manufacture should prove (to the authorities, not the test house) that the changes in the standard do not affect its product. If the highest test frequency has been changed, the only way of proof is re-testing. If the I/O port requirements have changed and the product has none, the proof is easily constructed as you said. The full assessment includes therefore an comparison between the standards, and a written motivation per test / port if re-testing is required. The assessment may require an expert on EMC, I have seen too many unexpected results. Note that even if port/limits/frequencies did not change, the test method may have been changed due to a modified reference to the basic standards. It’s something that is easily overlooked. If the test house carries a private label (in addition to CE), you probably just have to comply to their requirements Regards, Ing. Gert Gremmen, BSc g.grem...@cetest.nl www.cetest.nl Kiotoweg 363 3047 BG Rotterdam T 31(0)104152426 F 31(0)104154953 Before printing, think about the environment. -----Oorspronkelijk bericht----- Van: emc-p...@ieee.org [mailto:emc-p...@ieee.org] Namens John Woodgate Verzonden: Friday, August 30, 2013 10:47 PM Aan: EMC-PSTC@LISTSERV.IEEE.ORG Onderwerp: Re: Retest because of supersded standard? In message <617eb8c8634c9149aa66c853d7b8ac5322b70...@ch1prd0310mb392.namprd03.prod.o utlook.com>, dated Fri, 30 Aug 2013, "Crane, Lauren" <lauren.cr...@kla-tencor.com <mailto:lauren.cr...@kla-tencor.com> > writes: >A test lab is suggesting that because EN61000-6-4:2007 will be >superseded in 2014, all conforming products must be retested to the new >standard, even if no changes have occurred in the product. > > > >Is this a fair claim? No; there is no obligation to re-test if you can write an honest EMC assessment (maybe after pre-compliance testing) that the product conforms to the new edition, maybe because, for example, the changes do not affect your product in any way. For example, a new edition of a standard might change requirements for immunity of data ports. If your product doesn't have data ports, it's not affected by the change. The EMC Directive doesn't demand ANY testing. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk <http://www.jmwa.demon.co.uk> Why is the stapler always empty just when you want it? John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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