Dear John, Please check clause E.1 in IEC 62368-1. I believe requirements in IEC 60065 are exactly the same. You need to use 1kHz source to verify what input signal amplitude results in output clipping. Then you need to set 1/8 of maximum non clipped output power with pink noise on input.
This is what I remember from my colleagues who used to test TVs. Unfortunately we have no more audio devices to test, since they are mostly designed in far east. Best regards, Bostjan Best regards, Bostjan Boštjan Glavič Vodja laboratorija, Laboratorij za elektroniko Head of Laboratory, Laboratory of Electronic Engineering [SIQlogo60px] www.siq.si<http://www.siq.si/> SIQ Ljubljana, Trzaska c. 2, SI-1000 Ljubljana, Slovenia, VAT ID: SI23509678 t +386 (0)1 4778 265<tel:+386%20(0)1%204778%20265>, m +386 (0)41 391 283<tel:+386%20(0)41%20391%20283>, f +386 (0)1 4778 444<tel:+386%20(0)1%204778%20444> On 9. avg. 2014, at 08:52, "John Woodgate" <[email protected]<mailto:[email protected]>> wrote: In message <[email protected]<mailto:[email protected]>>, dated Sat, 9 Aug 2014, "Kunde, Brian" <[email protected]<mailto:[email protected]>> writes: Chuck, the rating on the product should be the max steady state current. The NEC requires the plug to be rated 125% of the max continuous current, which depending on the product can be significantly less. You can put both ratings on your product if you want. Where are 'max steady state current' and 'max continuous current' defined? How can these terms be applied to an audio amplifier, for example, where the current is dependent on the input signal *so there is no 'steady state')? -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk<http://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]<mailto:[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]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher: <[email protected]<mailto:[email protected]>> David Heald: <[email protected]<mailto:[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]>
