Hi Everyone, This month I have a set of measurements I think many of you may be interested in.
Technical Tidbit - December 2009 Analysis of the IEEE Std 802.3™-2002 Cable Clamp (It May Not Be a Good Idea to Use it for 10 Gigabit Ethernet Testing!) This month's Technical Tidbit details problems that result when using the IEEE Std 802.3™-2002 Cable Clamp, designed for testing 1000Base-T Ethernet ports, for testing 10GBase-T Ethernet ports. The clamp has serious problems above 300 MHz and should not be used for testing 10GBase-T Ethernet ports. Abstract: An injection clamp is defined in IEEE Std 802.3™-2002 Annex 40B for testing conducted immunity on 1000Base-T Ethernet ports. There has been a move to use that clamp for conducted immunity testing of 10GBase-T Ethernet ports as well. However, the clamp has significant problems when used at frequencies above 300 MHz and should not be used for these higher frequencies. A few other problems that can result from using this clamp for 10GBase-T port immunity testing are also discussed. Go to http://emcesd.com and page down to the analyzer plot at the bottom of the page. The picture is the link to the article. Doug -- ___ _ Doug Smith \ / ) P.O. Box 1457 ========= Los Gatos, CA 95031-1457 _ / \ / \ _ TEL/FAX: 408-356-4186/358-3799 / /\ \ ] / /\ \ Mobile: 408-858-4528 | q-----( ) | o | Email: [email protected] \ _ / ] \ _ / Website: http://www.dsmith.org - 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://www.ieeecommunities.org/emc-pstc 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]>
