I read in !emc-pstc that John Harrington <jharring...@f2labs.com> wrote (in <5777c7d14a69d411be4200a0cc746898493...@exchange.f2labs.com>) about 'ESD gun verification' on Thu, 1 May 2003:
>Does any one have a quick and dirty (and hopefully cheap) way to verify the >performance of an ESD gun. It's a major bugbear with that standard (and any ESD standard, I think). Any Q&D method will only give you very dirty answers. You might just as well not bother. No-one, AFAIK, really knows how the discharge current gets back to the gun. Even for an 'electrostatic' discharge, there must be a closed current path. Now think about those nanosecond pulses travelling along a metre or more of return cable. Inductance? What's that? (;-) > >Please, no one suggest building the current sensing system described in the >back of IEC 61000-4-2. I don't understand the drawings let alone have the >workshop or materials to consider it. Although, I may pay someone to build >it for me... Don't. The amount of black magic you need even to make the official method work is immense, and you certainly can't qualify the current- sensing system without a lot of VERY costly test equipment. > >I am desperate enough to consider buying something off the shelf (if I could >find said shelf). I'm not sure that you can even do that at a sensible cost, but I understand that there are a few specialist companies who will verify your gun for you. I don't have any names or URLs, though. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
