According to EN50082-1, no degradation of performance below a performance level specified by the manufacturer is allowed whereas EN55020 gives a clear cut wanted/unwanted signal to noise ratio of 40dB. Now say my audio amplifier specs give a signal to noise ratio of x dB but also state in a footnote that this signal to noise ratio may be degraded in the presence of a modulated RF field (you can see where I'm going). Could my audio amplifier then demodulate the 1kHz tone in the conducted and radiated immunity tests and pass performance criterion A?
I know the "get out clause" approach is far from ideal but I am spending rather a lot of time working on an amplifier at the moment and I will have to justify the time (or not) sooner or later. Cheers Chris Colgan Compliance Engineer TAG McLaren Audio Ltd The Summit, Latham Road Huntingdon, Cambs, PE29 6ZU *Tel: +44 (0)1480 415 627 *Fax: +44 (0)1480 52159 * Mailto:[email protected] * http://www.tagmclaren.com ************************************************************** Please visit us at www.tagmclaren.com ************************************************************** The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd The Summit, 11 Latham Road Huntingdon, Cambs, PE29 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) ************************************************************** Please visit us at www.tagmclaren.com ************************************************************** ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [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: No longer online until our new server is brought online and the old messages are imported into the new server.
