Kevin Richardson <[email protected]> wrote (in <[email protected]>) about 'Condenser Microphones - Euro/USA EMC Emission Requirements', on Tue, 30 Aug 2005:
>Can anyone advise if professional grade condenser microphones (cable >not wireless) are required to comply with EMC emission requirements in >Europe and the USA considering they typically do not contain any clock >or oscillators etc. For Europe, they are required to comply with emission requirements. > >For Europe at least, I suspect many companies test to EN 55103-1. I hope so; that IS the correct standard. >Even though these devices do typically incorporate a linear amplifier >that contains, what may be termed by some, "active" components there >are still no clocks or oscillators. Would it be fair to assume >therefore, that for these devices, because they do not include any >clocks or oscillators, the emission testing is not necessary. Manufacturers are entitled to claim (and document) that, based on your reasoning. The EMC Directive does not mandate testing; its only requirement is that the emissions and immunity are such that the 'essential requirements' are met. There is no need for emission testing, but, of course, immunity testing is likely to be required. I often point out to clients that all-analogue solutions, not only in audio, can save testing costs and speed time to market because of this consideration. -- Regards, John Woodgate, OOO - Own Opinions Only. Deadlines are 90% of deadliness. http://www.jmwa.demon.co.uk Also see http://www.isce.org.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/listserv/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: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
