Cables going outside the shielded chamber through a pipe or porthole can be described as building your own coax! A signal cable in a pipe is a coax that will carry any and all received energy into the chamber to then be measured as radiating from the portion of the cable above the ground plane. I use ferrites at the porthole or pipe opening on the outside. Any ferrites used within the chamber above the ground plane would be required to be part of the EUT when marketed.
Bill --- On Wed, 9/29/10, Oaks, Dustin <[email protected]> wrote: From: Oaks, Dustin <[email protected]> Subject: EN55022 To: [email protected] Date: Wednesday, September 29, 2010, 10:42 AM Hello Everyone, I have been questioned (Internally) regarding our test setup for Radiated Emissions under EN55022:2006 +A1. Therefore, I thought I would do a survey to see how my interpretation fairs against others. A simple question, are ferrites allowed on cables connected to AE located off the turn table? Example setup: - EUT on Table - AE located outside Chamber/Test area - Interconnecting cable is routed from EUT straight down through center of table, under ground screen to AE. Question: Are ferrites allowed anywhere along the interconnecting cable? Any and all feedback would be greatly appreciated. Thank you, Dustin Oaks | Pelco by Schneider Electric | United States | Compliance Laboratory Supervisor Phone: +1-559-292-1981 ext. 3348 | Fax: +1-559-388-7117 | Support: +1-800-289-9100 Email: [email protected] | Site: www.pelco.com <http://www.pelco.com/> | Address: 3500 Pelco Way, Clovis, CA 93612-5699 - USA *** Please consider the environment before printing this e-mail This transmission is intended only for use by the intended recipient(s). If you are not an intended recipient you should not read, disclose copy, circulate or in any other way use the information contained in this transmission. The information contained in this transmission may be confidential and/or privileged. If you have received this transmission in error, please notify the sender immediately and delete this transmission including any attachments. - ---------------------------------------------------------------- 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]> - ---------------------------------------------------------------- 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]>
