On Tue, 3 May 2022 10:42:23 +0100, "James Pawson (U3C)" <[email protected]> wrote:
> A question I get asked by our customers, and that I've not found a > satisfactory answer to, is why are there steps in the limit lines for > radiated emissions? > > This kind of leads to the question of how do limit lines get specified in > the first place? For emissions and immunity. For emission, maybe worth to read the following articles: "A Historical Look Back: The 1977 CBEMA Paper on Electromagnetic Emanations" (Daniel D. Hoolihan, published in In Compliance Magagine) https://incompliancemag.com/article/a-historical-look-back-the-1977-cbema-paper-on-electromagnetic-emanations/ https://incompliancemag.com/article/a-historical-look-back-the-1977-cbema-paper-on-electromagnetic-emanations-2/ https://incompliancemag.com/article/a-historical-look-back-the-1977-cbema-paper-on-electromagnetic-emanations-part-3/ Regards, Tom -- Tomonori Sato <[email protected]> URL: http://t-sato.in.coocan.jp - ---------------------------------------------------------------- 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 <[email protected]> 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://www.ieee-pses.org/list.html (including how to unsubscribe) 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]>
