Is DFT obsolete? I say this from an experience I had maybe 7 years ago. My company made aircrew emergency locator beacons and transceivers for the military market. These were not designed for test at all; they were designed to work without any level of manufacturing test. We received an emergency request to quickly supply many more units, but the just-in-time supply chain was not flexible enough. We went to the rather small trash bin where we had been collecting the few units that failed their final (and only) test for whatever reason. We assigned several bodies (me included) to finding the faults and fixing them. It was terrible work; there were no test points, the boards were multi-level and the traces looked more like a moiré pattern.
I was struck that the manufacturing process quality was so high that a failed unit was rare, but fixing a failed unit needed heroic effort. Ed Price WB6WSN Chula Vista, CA USA -----Original Message----- From: Brian Oconnell [mailto:oconne...@tamuracorp.com] Sent: Monday, June 16, 2014 9:59 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] RE2: [PSES] Television Manufacturing Documentary From The Late 1950's - YouTube My love affair with Tek scopes from that era continues. I have two at home. And one in the safety lab, which drives the boss crazy, thus making its retention all worthwhile... The level of test is probably an order of magnitude greater than that era, but perhaps noticed less because most test is automated and most stuff is designed with test in mind (remember the old DFT push?). As for commercial product transport tests -> very common and some of these tests are fun to do. Also, in addition to the ANSI and ASTM and IEC stuff, the major carriers also publish specs and profiles and tests for packaging based on a well-defined transport environment. Brian - ---------------------------------------------------------------- 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>
