In message <[email protected]>, dated Sun, 7 Jun 2009, "ce-test, qualified testing bv - Gert Gremmen" <[email protected]> writes:
>I always carry out Conducted interference measurements on both > >AC and DC supply cord when wall plug supplies are delivered with the >product. > > > > > >Measuring on DC cabling when a standard AC-DC adapter is used > >Is part of due diligence (IMHO) because one does not know if > >replacing or just exchanging an adapter might change the > >conducted (even radiated) emission properties. Formally, you are 'gold-plating' the standard - extending beyond its internationally-agreed requirements. You should make a proposal to amend the standard in accordance with your view, so that it can be tested in the proper forum. Gold plating per se is not acceptable, and it must not be allowed to grow unchecked. It results in differences in acceptability between different regulatory authorities and, above all, it gives a license to test houses to steeply increase test fees. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Things can always get better. But that's not the only option. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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 <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]>
