Bill This is a R&TTE Directive article 3.2 radio spectrum standards not an "EMC standard" The standard details many parameters such as RBW, VBW, Span and Sweep time for a number of the tests. The "Average" detector is the a power average detector.
Where test signal do not have a 100% duty cycle, the average measurement should (typically) be performed for the "on" time of the signal. Regards Charlie From: Bill Owsley [mailto:wdows...@yahoo.com] Sent: 06 December 2011 17:14 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Average detector/s Quasi-peak was fun, so now let's have fun with the Average detector/s, each and all of them ! For reference, EN 302 208-1, Sec. 8.3, 8.4, 8.5. Detection mode: Averaging Which averaging would this be? On the SA that I'm using, There is video averaging by reducing the VBW to something a lot smaller than RBW. There is EMI average detector, and There is average detector which has two modes, power and video. (one is the log of the average of power, the other is the average of the log of power.) And there is a multiple sweep averaging of the above. And there is adjusting the sweep time while averaging is turned on. And adjusting the span to be measured has an effect on the average measurement. Each can give a different result. So starting with the always correct answer in EMC, "it depends," what are these dependencies? - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org<mailto:emc-p...@ieee.org>> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.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...@radiusnorth.net<mailto:emcp...@radiusnorth.net>> Mike Cantwell <mcantw...@ieee.org<mailto:mcantw...@ieee.org>> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org<mailto:j.bac...@ieee.org>> David Heald <dhe...@gmail.com<mailto:dhe...@gmail.com>> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.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...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
