Paolo Roncone wrote: > > The reason of my inquiry is that we bought samples of "STP" and "FTP" > cat.5 cables for 10bT ethernet applications from different vendors and to > our surprise we discovered that both "STP" and "FTP" types have an > overall (external) shield made of aluminum foil, but no shields on individual > wires or wire couples (as per 802.3 definition above).
Maintaining a characteristic impedence of a twisted pair by shielding the individual wires of that twisted pair? Something doesn't sound right. - Doug McKean ------------------------------------------- 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: Michael Garretson: [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: No longer online until our new server is brought online and the old messages are imported into the new server.
