Bob Richards wrote: > Twice recently I've seen where annex B of 61000-4-6 ed2.2 is > referenced by someone and used as a reason for not requiring testing > down to 150 kHz "since the cable is specified as being less than x > meters in length". (Of course, this is after the EUT failed at a low > frequency!)
Was Annex B applied correctly? Only very special setups are subject to higher starting frequencies, e.g. the keyboard attached to a battery powered PC, never used with AC adaptor. Most devices are galvanically coupled to sources of low frequency disturbances, in this case the starting frequency must not be raised. I read this from Annex B and it makes sense. Oliver -- Oliver Betz, Muenchen - 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 ______________________________________________________________________
