I read in !emc-pstc that Gordon,Ian <[email protected]> wrote (in <E1BA0362B28ED211A1E80008C71EA306018190AE@EXC_EAS01>) about 'CE Marking for Passive speakers' on Thu, 19 Sep 2002: >By "the wider issue" I was referring to your assertion that "The EMC >Guidelines document explains that having no active components is NOT grounds >for exemption from the EMC Directive." >If this were the case then it would have far reaching implications for many >industries since all "Electromagnetically Benign" equipment might require >testing. >Furthermore I imagine this would have legal implications for the UK >Government appointed Competent Body which advised my company that benign >equipment is exempt. This Competent Body helped us compile a list of >products within our range to which this exclusion applied.
'Benign' is NOT the same as 'passive', which is what was asserted. A torch/flashlight with an incandescent lamp is benign, because it is inconceivable that it would either emit anything or suffer from lack of immunity. But even just a *junction box* for high-speed data cable can both emit stuff and let external disturbances into the cabling. I showed how a loudspeaker can both emit and be disturbed by and external emission. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! ------------------------------------------- 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: Ron Pickard: [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: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
