I read in !emc-pstc that Chris Chileshe <[email protected]> wrote (in <[email protected]> ) about 'Automotive application - Unterminated cable shield' on Mon, 9 Feb 2004:
>On my product, the cable shield terminates on the PCB (separate plane) >to which all my small RF filters are connected. This plane is not quite >the same as battery -ve on the PCB. I have filters between battery -ve >and this plane. But that plane has capacitances to all of your circuit elements. Any noise on the shield will thus couple into your circuits. Shields are extensions of enclosures and should be connect to local ground independently of any circuitry, and preferably to the outside surface of a metal enclosure. I'm afraid that you actual question is not clear enough for me to answer. -- Regards, John Woodgate, OOO - Own Opinions Only. The good news is that nothing is compulsory. The bad news is that everything is prohibited. http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
