Conducted susceptibility testing 150 kHz to 1000 MHz.
We were reviewing our procedures, and found an issue in 61000-4-6. We previously calibrated to a level of 67 mA, based on the assumption of a 150 ohm system(section 7.4 of the 3rd edition). Looking at the current probe calibration method, it seems to be a 100 ohm system instead. This means we should instead calibrate at 100 mA to match the 10 V level(Annex A). We do still take into account the -6 dB. We have some issues with this. First, comparing this level to vehicular test standard levels. The calibration methods for 4-6 and ISO 11452-4 is the same. The product family standards for vehicular environments have 100 mA being comparable to a 100 V/m test level. This is obviously significantly higher than 61000-4-6. The other issue is power. Following these new calibration files, it requires 3.5 dB more power – a huge increase. I am concerned that many of our customers will fail this higher level. We still limit on the 67mA current level, but the power limit will be much higher. Can anyone give me guidance on this? Am I misreading EN 61000-4-6? Can anyone give me information about what amount of power they typically need for doing a 10 V test for 4-6, or using BCI as an alternative 4-3 method for onsite testing? Thanks, David - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ 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]>
