In message <B3AA818630C942DBA06B45F1E778B315@MmPc21>, dated Thu, 13 Nov 2008, Piotr Galka <[email protected]> writes:
>Reading this Annex it looks that I first have to have the device and >then can ask if it is OK. Well, what I would do is to determine how far away from the board the emissions comply with the EN 55022 Class B limits. That is the distance you put in your assessment. >The better would be to have the accepted specifications first - if they >don't agree for higher emission I can do some steps I described earlier >even they are not the best from education point of view. Don't look at it as 'higher emission' but as a matter of specifying the distance at which the emission is NOT higher. It is really an 'environment' issue, as was recognized in a very old European Commission EMC guide published in 1991! >I hope I would not need to follow the procedure for each board which I >suppose to be ready in few months delays between each other. The way to deal with that is to agree a procedure with the Notified Body that minimizes the time scale. You mentioned analogue boards: they presumably don't produce significant emissions, but are ESD sensitive. So once you get the Notified Body to agree that your instructions to use ESD precautions (you could even add the required products to your range; they are usually not costly) are acceptable, that applies to all the boards at once. -- 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
