In message <e6acec5be8405b4e936c9e9bccac10241b6...@bb-corp-be1.corp.cubic.cub>, dated Wed, 7 Feb 2007, "Price, Ed" <[email protected]> writes
>OTOH, is there anything in the USB definition that addresses RF noise >and transients on the USB power bus? Is there a CE/CS USB criteria? I don't know about the USB definition, but CISPR22/EN 55022 now sets limits for emissions on 'd.c. power ports'. I have pointed out that no method of measurement is explicitly stated, though, which is rather an important omission! -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. 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 ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
