Hi All, Test failures (performance, compliance, or any other) just before product introduction are very expensive. It is not unusual to cost a company US$100,000 or more revenue per day of product delay. Given that...........
There is an issue with IEC61000-4-2 based ESD testing, and it is costing companies millions of $/year in incorrect failures on equipment that in fact was compliant!!! I have observed this for decades now but not much has been done about it. What we really need is a maximum di/dt specification anywhere on the waveform (I proposed this when I was on WG9 of TC77b almost 30 years ago) and an E-field emissions amplitude and de/dt specifications for ESD simulators. They are all over the map in their ability to fail equipment that is actually compliant! Given that, one's only recourse is to try and use a simulator that meets the "intent" not just the letter of the requirements. Along those lines, you might be interested in my latest Technical Tidbit article for November about data I have taken on most of the current simulators on the market using special measurement techniques (both equipment and technique of measurement). In the article I give an example of di/dt issues. Here is the link: https://emcesd.com/tt2022/tt111822.htm Doug [cid:image001.jpg@01D90586.D740B940] - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
