HI John, This is interesting, in fact it's news to me that CISPR 11 is not for in-situ testing. A significant proportion of products I test are industrial equipments that would not fit in a shield room, or have power sources that would make the 200 amp room filters look like fuses.
When did that change happen, and what are we supposed to use now? Thanks, Derek Walton ----- Original Message ----- From: "John Woodgate" <[email protected]> To: <[email protected]> Sent: Wednesday, January 02, 2008 7:24 AM Subject: Re: Radiated emission testing "in the real world" > In message > <5d39f9c94199f64fa82e5809c702aa7c590...@z-160-100-30-229.est.ibm.com>, > dated Wed, 2 Jan 2008, "Gordon,Ian" <[email protected]> writes: > >>Clause 6.1 of CISPR 11 requires that ambient noise levels to be 6dB below >>the specified limit. However for testing at a customer site i.e. not on an >>OATS or in a chamber the level of ambient emissions may be higher than >>this due to neighbouring factories or other sources. Can anybody suggest >>how to achieve these measurements? > > CISPR 11 is not intended for in situ measurements. > > This might help, but I'm not confident! > > DD CLC/TS 50217:2005 > Title: Guide for in situ measurements. In situ measurement of disturbance > emission > > -- > OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk > For very important information, please turn over. > John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. Website: http://www.ieee-pses.org/ > > To post a message to the list, send your e-mail to [email protected] > > 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] > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc > - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
