I read in !emc-pstc that [email protected] wrote (in <E6F64B42266D6 [email protected]>) about 'Model for CAT 5 cable' on Sun, 28 Sep 2003: >John has some good methods. Here is another method that requires an RF >source and an oscilloscope or a spectrum analyzer.
Yes, a good technique. You have to do it at a frequency at which XL and XC dominate the impedance. At lower frequencies, where XL is small, (and G is small, but it is small at most frequencies), the impedance is dominated by R and XC, and is quite high and complex, not a small, pure resistance. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ 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] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
