In message <000701c8371c$02d73790$6701a8c0@Mike>, dated Wed, 5 Dec 2007, Mike Hurley <[email protected]> writes:
>I think this 'clarification' is actually confusing. So do I, but, now I've studied the texts in more detail, I think your original comment may have missed a crucial point. > >Fig 8 (61000-4-4:2004) shows 1m between the coupling device (in this >case the capacitive clamp) and the EUT, whilst towards the end of >section 7.2.1 it is stated that: > >'Unless otherwise specified in the product standard or the product >family standard, the length of the signal and power lines between the >coupling device and the EUT shall be 0.5m +/- 0.05m' Yes, but it seems that text wasn't cited in your original enquiry, but the text immediately above it, and the response from IEC is thus correct but not relevant! > >This doesn't appear to give much room for movement, certainly not an >increase to 1m. > >In the 1995 version of the standard there was a clause which said 'The >length of the signal and power lines between the coupling device and >the EUT shall be 1m or less' This has now been replaced (2004) by the >0.5m requirement .... without changing Figure 8, very likely. I'll try again with IEC. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk For very important information, please turn over. 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
