In message <809376ab0310a746b991380cb827f8e6017d1...@susday7659.td.teradata.com>, dated Tue, 3 Jun 2008, "Flavin, John" <[email protected]> writes:
>Our question is how to place a relatively large number of LISNs and >satisfy the standards' requirement of the 80cm spacing of the EUT and >LISN. Specifically: > >1) Are we allowed to place LISNs around all sides of the EUT, >maintaining the 80cm spacing (i.e. have LISNs at the front face of the >EUT, and run the mains cord from the back to the LISN)? I don't see why not. While you can't assume that you can do anything that isn't specifically prohibited, I think your proposal doesn't have a fatal technical defect. > >2) Are we allowed to stack LISNs on top of each other, as long as the >LISN is bonded to the ground plane? I think that is less proof against criticism. The inductances of the ground straps of the upper LISNs might affect the results. I think CISPR/I experts (there are some who lurk here) will bear in mind for the future that they have to allow for products with 18 mains leads. At least.(;-) -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! 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
