In message <[email protected]>, dated Mon, 26 Jan 2009, Grace Lin <[email protected]> writes:
>One more question: >What is the role of CISPR 16 series to CISPR family standards, such as >CISPR 15? For example, I though disturbance voltage measurement >mentioned in CISPR 15 should follow CISPR 16-2-1. From what I have >learned from you, it seems CISPR 16 series are independent to other >CISPR standards. Am I right? Not quite. There is a history. Originally, CISPR/A was supposed to develop methods of measurement, put them in CISPR 16 and invite the CISPR product committees (originally CISPR/B to CISPR/G) to adopt them. But the invitation was often not taken up, and the product committees developed their own methods of measurement. The most notable example may be the former CISPR/E; the methods specified in CISPR 13 and CISPR 20 were unique to those standards (which actually began life, together, as IEC 106!). Now, CISPR policy is to have all the methods of measurement in CISPR 16 Parts and Sections, and product standards will cross-reference them. It will take a long time to reach completion. > >Figure 6 and Figure 7 of CISPR 16-2-1 clearly specify vertical and >horizontal reference planes. Indeed. But the product standards are definitive, irrespective of anything in CISPR 16. -- 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]>
