Hi All, I have been asked if there was a way to prevent testing a mechanical switch for EMI. The background is that the exact aircraft switch was not available at the time of the system EMI test, so a substitute was used. The suitability of the correct switch is now being questioned since it was not present during the EMI test.
This is a mechanical switch with just electrical contacts. For immunity, it should be blatantly obvious, but not so at our final customer. For emissions, there is potentially a noise source during the few microseconds as the contacts touch or open. However, this is a low level signal, and similar contacts on the substitute device would have exhibited similar noise had it been an issue. If anyone has suggestions on building a case why not to test this mechanical switch I'd appreciate it. Thanks, Derek Walton L F Research - 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 [email protected] 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
