Ian, A great deal will depend on the design of the card cage itself and on the manufacturer. In the past I have found that card cage products manufactured by Schroff were among the best featured for EMI control, with some useful BeCu strips available as an add-on kit. Their understanding of the issues was better than many others, and they even publish test reports for some of their enclosure products. It is also vital that the panels are not anodised aluminium, but some conductive finish. Often products are available with alternative finishes, so you need to ensure that you select the right one. Best regards,
Neil R. Barker C.Eng. MIEE FSEE MIEEE Manager Compliance Engineering e2v technologies (uk) ltd 106 Waterhouse Lane Chelmsford Essex CM1 2QU UK Tel: +44 (0)1245 453616 Fax: +44 (0)1245 453410 e-mail: neil.bar...@e2v.com Web: http://www.e2v.com <http://www.e2v.com/> From: McBurney, Ian [Allen & Heath UK] [mailto:ian.mcbur...@allen-heath.com] Sent: 17 January 2005 14:26 To: emc-p...@ieee.org Subject: Card cage emissions Dear colleagues; I hope that someone may have come across this problem before. I have a 19" card cage that has rf emissions radiating from the slots between the front panels. By using a single horizontal strip of copper tape across the front of the card cage I am able to reduce the emissions considerably. My question is does anyone know of a component (like a short finger strip) that can be mounted onto the front panels or circuit boards that will bond the panels together. The bonding only needs to be in one or two positions to half the wavelength of the emissions. However the cards must be able to be removed and replaced. Ian McBurney. Allen & Heath Limited. email: ian.mcbur...@allen-heath.com ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Mcantwell mcantw...@ieee.org For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
