In message <201048ea81ba0745aca78e4cc8839001037cf...@desmdswms201.des.grplnk.net>, dated Mon, 3 Nov 2008, "Haynes, Tim (SELEX GALILEO, UK)" <[email protected]> writes:
>By not looking at an extended frequency range for emission and >immunity, when you know the design employs technology in the extended >frequency range, the manufacturer carries an unquantified risk. It is >always preferable for the manufacturer to identify and (if possible) >quantify the risk so that it may be mitigated if it is too high. > >As the banks and financial institutions have discovered, taking too >much risk can seriously damage the business. Where would you rate a >company who cannot be bothered to identify the risk at all? Isn't that really the same as : However, self-interest may suggest that if you know of any EMC effect not covered by the applicable standards, you should consider how to test and what VOLUNTARY limits to apply. My point is that simply applying a standard outside its scope is not a measure that is likely to impress the authorities. We have already had people claiming conformity with CISPR 11/ EN 55011 for products outside its scope, because it has more relaxed limits than the truly applicable standard. -- 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
