CISPR 16-4 is full of information about measurement uncertainty. For a state of the art configuration the expanded uncertainty is 5.18 dB if I remember well.
and that's theory .... Gert Gremmen Van: emc-p...@ieee.org [mailto:emc-p...@ieee.org] Namens Cortland Richmond Verzonden: woensdag 5 maart 2008 22:08 Aan: emc-p...@ieee.org Onderwerp: Re: Free Space Antenna Factor What are the odds a customer wishing to verify results will use a lab biased exactly the same as one that gives us a passing result? Not very good. Articles on Round Robin standard object testing have been revealing, to say the least. Cortland KA5S >From: Ken Javor <ken.ja...@emccompliance.com> >Sent: Mar 5, 2008 10:52 AM >To: Untitled <emc-p...@ieee.org> >Subject: Re: Free Space Antenna Factor > >It's quite simple, really. Compliance with FCC/CISPR (now one and the >same?) CE and RE limits means that the probability of causing rfi is low. >Low, but not nonexistent. > >I do not see that shopping around for a test facility that gives the "right >answer" is unscrupulous at all, as long as the test is performed correctly. >However it is highly unlikely. > >In the vast majority of cases, the pressing issue is schedule, not the cost >of the fix itself, so the impetus will be to find a fix, not repeat the test >at different facilities until a favorable site is found. > >Ken Javor > >Phone: (256) 650-5261 > - 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 emc-p...@ieee.org 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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - 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 emc-p...@ieee.org 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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
