Greetings all!
I am interested in the forums collective experience on the degree of ESD protection required by HDMI/USB and eSata interfaces given that: 1) The pins are recessed and 2) The I/O has a shielded cable. I see two scenarios: First : - discharge to the I/O pins – either on the product connector or on the cable connector (with the cable attached to the product). It seems to me that a discharge from a users finger to a pin will be difficult to achieve as the field will tend to “jump” to the outer shell of the connector. Second : - electrostatic induction on the cable i.e. a user takes the cable out of the bag and induces a charge on the cable. In this case the predominant field distribution will be contained on the cable shield. So when the cable is offered to the product any discharge will jump again to the cable shield. What’s not clear to me is the esd level induced on the i/o pins as a result of the external discharge and hence my inquiry. Thanks!! Best Regards Charles Grasso Compliance Engineer Echostar Communications (w) 303-706-5467 (c) 303-204-2974 (t) 3032042...@vtext.com <mailto:3032042...@vtext.com> (e) charles.gra...@echostar.com <mailto:charles.gra...@echostar.com> (e2) chasgra...@gmail.com <mailto:chasgra...@gmail.com> - ---------------------------------------------------------------- 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://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 <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>
