In message <ofc16ca941.1e2334c5-on6525714c.003142c5-6525714c.00322...@scmmicro.co.in >, dated Mon, 10 Apr 2006, [email protected] writes >Thanks for the reply. So if a device is not drawing power from the a.c. >mains it is exempted from line conducted emissions test. > Similarly USB devices (such as USB mouse, USB keyboard, USB smart >card reader etc.) which are drawing power from the USB port of the PC >also are exempted from the line conducted emissions testing. > Is my understanding correct?
It may be correct for FCC: the requirements in Europe are rather different, and too complicated to explain here. See clause 9 of ***the latest edition of*** EN 55022. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk 2006 is YMMVI- Your mileage may vary immensely. 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
