I recall the standard dropped or never implemented the requirement to add certain ferrites to all cables exiting the chamber. I don't like the cell phone frequencies on the plots so any cable to outside accessories gets lots of ferrite at the porthole.
Attitude is Mind over Matter. If you don't Mind, it doesn't Matter... This email has been displayed using 100% recycled electrons and 100% pure virgin photons. ________________________________ From: "Grasso, Charles" <[email protected]> To: "[email protected]" <[email protected]> Cc: "[email protected]" <[email protected]> Sent: Tuesday, July 26, 2011 3:32 PM Subject: Ethernet cable EMI testing Hello Doug, I was interested in your comments regarding the degrading of Ethernet cables and poor EMI performance as a result. Typically we run Enet cables into a test chamber to provide traffic for the ports. We (of course) add ferrites external to the chamber to mitigate the effects of ambients in the chamber. We also run one wrap around the ferrite to increase the effectiveness of the ferrite. What is your opinion of this practice? Chas ****************************************** - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ 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]> - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ 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]>
