In message <of6c396a3e.738b9f19-on8625755a.0057584c-8625755a.00588...@mmm.com>, dated Wed, 11 Feb 2009, [email protected] writes:
>Does anyone know what "brief isolated" could mean Yes, it means that the committee was asleep at the time. (;-) It can be a very difficult task to quantify such things, but instead of specifying exact numbers, an informative Note can give valuable guidance. In this case, you might think that a single high level lasting less than a thousandth of the observation period would be 'brief and isolated', but that's 15 ms duration, which could cause problems. And how high could such a level be? 80 dB over the limit? >or am I left to my own to devices to define it as I see fit? Yes. At your peril, of course. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Things can always get better. But that's not the only option. 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.ieeecommunities.org/emc-pstc 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]>
