Hi Forum, Has anyone on this forum worked with I2C products and maybe be able to advise on the best method to suppress EFT noise that would alow the I2C bus, via external cables, to operate as expected e.g. Good EFT devices? How best to shield the I2C? Other? As always I look forward to your proffesional advice. History I have a system that connects 3 products (powered from an in-line external non-earthed power supply, SELV) using the I2C bus via a 1m shielded and 1m shielded curly cable. I use an I2C bi-directional extender IC P82B715 on one of the products. The I2C protocol gets corrupted when I appply the Electrical Fast Transient (EFT) Test per the EMC Standard EN61000-4-4. I have tried shielded cables, several EFT devices and 1nF caps on the lines but with little affect.
Kind Regards Alex McNeil Principal Engineer Tel: +44 (0)131 479 8375 Fax:+44 (0)131 479 8321 email: alex.mcn...@ingenicofortronic.com 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 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"
