In message <of808aff21.d418061b-on80257280.003326c6-80257280.003e1...@elekta.com>, dated Mon, 12 Feb 2007, [email protected] writes
>All essentially ending up on the same machine with the same model >number, but with possibly very different EMC footprints. It's up to the manufacturer to determine whether a change affects the EMC footprint significantly, and if it does, or is likely to, carry out further tests to ensure continuing compliance. This has been established practice in Europe, in respect of safety standards, for around 40 years. > >So.. Assuming no design or component changes, how long should a Cof C >remain valid? 1 year. 5 years, 10 years, 20 years? A DoC remains valid indefinitely, because it is a *continuing* assurance by the manufacturer that the referenced product complies with the Directive(s). If DoCs should have an arbitrary, fixed expiry date, how about degree diplomas? (;-) -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. 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 ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
