In message <[email protected]>, dated Thu, 5 May 2011, "Gartman, Richard" <[email protected]> writes:
>To demonstrate compliance with the EMC directive, products that have a >“path” to the AC grid must be tested for: Radiated Emissions < 1GHz >– EN 55022 I held off but you seem to be getting some quite odd advice. The way you test computer peripherals is to have a 'reference' computer that passes all the tests well, and you then test it again with the peripheral attached and show that it doesn't cause any of the limits to be violated. For some requirements, you can justify in your EMC Assessment not re-doing tests,, e.g. the USB device is not likely to affect the immunity to surges at the mains port. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK Plural: data, criteria, phenomena. Singular: datum (different meaning: use 'data element' for a single item), criterion, phenomenon. 'Effect' is a noun, 'affect' is a verb (except in psychiatry). - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
