I agree totally. It is not a definitive test for a little clipping but it will let you know if you are reaching the max output of your amp.
The Other Brian -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Woodgate Sent: Thursday, February 02, 2012 11:25 AM To: [email protected] Subject: Re: IEC 61000-4-3 Field Uniformity Measurement In message <64D32EE8B9CBDD44963ACB076A5F6ABB01C55612@Mailbox-Tech.lecotech.local>, dated Thu, 2 Feb 2012, "Kunde, Brian" <[email protected]> writes: > A 1db change in the amp's input will result in a 1db change in the >amp's output (or fairly close to it) if operating within its linear >range. This isn't a very sensitive measure of overload in terms of harmonic generation. If you do a Fourier analysis of, for example, a sine wave with 0.5 dB peak clipping, you will see that the harmonic content is already significant. I did have this documented somewhere, but I can't find it at present. -- 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 Some people who are peeling the finch of the financial crisis are thinking of biting a rook. - ---------------------------------------------------------------- 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://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]> ________________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- 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://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]>
