Some thoughts....
The basis should be: - the description of intended operation and a listing of testable parameters relevant to intended operation - the manufacturers "product specifications under (EMC) test" for those parameters and if not present, - the specifications as published. Manufacturers are supposed to have these (EMC specs) although I never found a leaflet mentioning them. - a test report should outline which of the specifications have been monitored and, - even more what aspects of a device were not monitored and for what reason. - the properties monitored should be logged including the way obtained (data logger / visual / spot frequencies ), with proof (graph / manual logging / reference to video) - the chosen dwelling time and frequency step and why that is sufficient (unfortunately some standards prescribe dwelling time) to judge immunity > Did you check it by tasting the milk? That IS the ultimate test , as the intended function is to preserve food, not maintain a temperature ;<))) Let's continue the discussion !!!!! -----Original Message----- From: John Woodgate [mailto:[email protected]] Sent: Monday 14 September 2015 13:27 To: [email protected] Subject: Re: [PSES] FW: EMCTLA - White Paper - Modes of Operation for EMC Testing In message <[email protected]>, dated Mon, 14 Sep 2015, Michael Derby <[email protected]> writes: >Well, once the document is finalised, I think it will be very important >to speak with standards committees, Notified Body groups, test lab >associations and manufacturer forums, etc. Of course, if the EMCTLA >members suddenly decide they don't like it, it won't go anywhere. :-) The important point for success is to propose a solution, not just describe the problem. A solution should preferably include examples. In many cases, if just a few words are not enough, the mode of operation can be indicated in the test report by reference to a paragraph in the product's instruction book, which is appended to the test report. It's even possible, with a bit of ingenuity involving a scanner if the manufacturer won't co-operate, to add line numbers to the appended document to make cross-references unambiguous. > >I hope this helps. If it gets accepted in some form and finally >posted on the EMCTLA website, I will be happy to e-mail a link to it, >on this group. Thank you. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- 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]> - ---------------------------------------------------------------- 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]>
