Hello Vic! Verification of the 61000-4-2 ESD waveform requires some careful engineering, no matter which approach you take. Basically, you need to verify (among other things) the front-edge risetime, which is at (or slightly below) 1 nanosecond. The harmonic content of the RF produced by an ESD pulse is largely dependent on the pulse risetime.
To seriously verify this risetime, you need precise fixturing (i.e., the Pelligrini Target described in the 61000-4-2 Standard), plus a 1 GHz oscilloscope, a Faraday Cage, and plenty of attention to setup conditions ... including physical placement of the Generator ground strap. I don't believe there is a "simple" way to do it. To verify our Generators (Haefely-Trench models), I built the Pelligrini Target described in the Standard. It is quite an exercise in precision machining of brass, learning how to electroplate Silver, etc. If you don't have access to a lathe, vertical milling machine, drill press, and chemicals, you can doubtless find a local machinist that will tackle this thing. I built our target for approximately $200 US. A commercial target costs upwards of $2000. Plus calibration. We paid Haefely to run an A-B comparison calibration with their standard target, and the results were very close. Now, we use that data (and our target) to verify our ESD Generators between "formal" annual calibrations by the manufacturer. Give me a call if you would like any details on our target. 1-888-226-3837. Regards, Jim Ericson Senior EMC Engineer Acme Testing Company [email protected] ----- Original Message ----- From: <[email protected]> To: <[email protected]> Sent: Monday, February 25, 2002 6:00 AM Subject: ESD Generator confidence test > > The ESD standard IEC 61000-4-2 gives details for the manufacture of a > current target, used for verifying the ESD waveform. > > I appreciate this could be used as a confidence check before administering > the test, but does anyone have another approach that they would be willing > to share. > > Many thanks > > Vic Gibling > > EMC Engineer > > Raytheon Systems Limited > > > ------------------------------------------- > 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: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [email protected] > Dave Heald: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > ------------------------------------------- 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
