Gary: Re-test & retain the records, is the safest method. Source: Page 9 http://www.nsma.org/conf2012/Lazarus%20NSMA%202012.pdf
FW Miller On Thursday, August 14, 2014 2:07 AM, John Woodgate <[email protected]> wrote: In message <[email protected]>, dated Wed, 13 Aug 2014, Gary McInturff <[email protected]> writes: >I do have a pretty good pre-compliance chamber that I can do A/B >comparisons of the product which would allow me to make some reasonable >engineering judgments about the emissions comparisons between the old >and new processors.( I use the chamber on a regular basis before I do >formal testing and the results from my chamber and the OATS is close >enough I have only been surprised at the OATS site once, and that was >when I grabbed a bad cable as I was heading out the door - my bad.) You are fortunate to have that facility, which is the key to your question. > [snip] > > >Am I being too strict in my interpretation? I wouldn't worry too much about those wordy texts. The real question, as you know, is simply whether the new part causes more emission than the old one. It may do, because the devices may be faster: the manufacturer should tell you about that. >Can I do an A/B comparison in my lab, and presuming no signifint change >in my lab measured emmission allow release to production without >outside testing? For the EU I would put the results of the test and >rational for not testing further in the compliance folder. Yes, since you have reliable pre-compliance testing, you can do that. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk Quid faciamus nisi sit? 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]>
