Re: [PSES] FCC EMI Test and Ferrites on Cables - a conundrum

[Cortland Richmond]

Around1991 I was able to demonstrate that a computer that must be shipped with a really well shielded printer cable must also be shipped with really well shielded PRINTER.  Luckily, I caught it before we sent it out for an FCC ID, and minor rework made the the poorly placed bypass capacitors effective again. Cortland Richmond -----Original Message----- From: Pat Lawler Sent: Sep 8, 2014 12:05 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FCC EMI Test and Ferrites on Cables - a conundrum Hi Dennis, If the manufacturer choose to to use ferrites to solves the emissions problem, the implementation seems clear.  Inconvenient, but clear. What if the company found HDMI cables without ferrites that solved the emissions problem, like cables from vendors that properly terminate the shields to the connectors.  Is a quality cable considered 'special', and need to be shipped with products? Or does the issue fall into the category of using 'golden components' for compliance testing -- the manufacturer keeps a set of good HDMI cables for compliance testing, but doesn't ship cables ... - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com>