----- Original Message ----- From: "John Woodgate" <[email protected]>
>>I should be able to limit the emission just making square being not square >>and persuade the pupil that it is really square what they see ;-) > > Instead of work-arounds, there should be an EMC standard (or a pair, for > emissions and immunity) for such educational products. I don't expect such standards will allow for higher emission then others. There is possibility that in next classroom there is TV working. Except described (method 1) I see other methods of emission limiting: 2) - not allowing the pupil to make connections as they wont, but making them permanent when test board is installed (limiting the board flexibility of use). 3) - using shielded cables (BNC seems to me too big, but for smaller shielded connectors I don't give long live at school environment). As in 2 and 3 signal wires are not accessible you must add something to allow for oscilloscope probe connection. At the moment method 1 seems to me the easiest so the best one. Now I believe there is nothing I just missed in these subjects. Thanks John. But still don't know how existing at market education systems manage with ESD problem. Regards Piotr Galka P.S. Live was easy and pleasant before 2004 ;-) - 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
