Ken Javor wrote >> Between several hundred microfarads of storage capacity and the EMI filter, that doesn't seem terribly likely but it can't be completely discounted so it makes sense as a rationale. <<
I'm thinking a USB device is not likely to generate signals a LISN would see. On top of that, the level of CM USB-device-generated noise would depend at the LISN on the capacitance of the USB device and its cable, which is pretty low. I'd also not want to attribute to a peripheral EUT an emission the *host produces* when (and only when) an EUT device is plugged in; it doesn't take too many design mistakes for a host to make a decent peripheral look like a shouter. Cortland Richmond - 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/listserv/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
