In message <ofa9b24323.50ea4fa7-on882575cc.005e6568-882575cc.0061d...@slpower.com>, dated Fri, 5 Jun 2009, [email protected] writes:
>We have a customer who is measuring conducted emissions on the DC >output of our external switching power supply (laptop-style power >supply), claiming it is required by CISPR 22. As I read through CISPR >22-2005 for rebuttal material, the phrase telecom port was defined and >the measurement details looked clear. From the definition, a DC output port is not a telecoms port. > Until I got to Annex C. So Annex C doesn't apply. A mains port carrying PLT signals is a telecoms port, which is why it is mentioned in the flow-chart. 'Other' is there so that a product can't escape the test for telecoms ports just by using an unusual type of interface. -- 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]>
