Back in the day, when a GHz scope with a Polaroid camera was required to catch one discharge, I did collect a spectrum of ESD discharges. I used a KeyTek simualtor set on repetitive fast discharge, and put the spectrum analyzer on max hold. Over some minutes, the spectrum filled in with each discharge. This was of course only statistically valid, and unfortunately I do not remember how it looked. but that is the only way a swept frequency domain instrument can capture a profile of the ESD spectrum.
I have done similarly with a chattering relay. There are today instruments that can capture and transform a 200 MHz slice of spectrum. so. One such might be up to the task of verifying the ESD test discharge, but IMO it would not matter, as its official validity is established using a target. Cortland Richmond, KA5S GE Aviation Opinions my own and not those of my employer. On June 9, 2009, at 9:52 AM, Ralph McDiarmid wrote: > Could the ESD discrete signal be verified indirectly from > measurement in > the frequency domain with a spectrum analyzer before the advent of GHz > oscilloscopes? > > > Ralph McDiarmid, AScT > Compliance Engineering Group > Xantrex Technology In - 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 <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]>
