Please take a look at 47 CFR 15.103 (c) regarding ISM exemption to part 15. However, back in the day, when I did EMC, we never worried about part 15 or part 18 because we always did IEC/EN 61326-1 and declared victory for the world.
Best regards, Ron From: Crane, Lauren [mailto:[email protected]] Sent: Thursday, October 23, 2014 1:40 PM To: [email protected] Subject: [PSES] Difference in meaning of ISM equpment between EU and US Dear Experts, I am doing a deep dive into ISM equipment requirements for the first time. I *think* I see a difference in interpretation of ISM equipment between the US and EU regulations. US (FCC Part 18) seems to limit the ISM concept to equipment that essentially uses radio frequency to do something to a target object or work piece. This would exclude, for example, radio frequency energy generated by a microprocessor clock circuit in an industrial machine's controller (which instead are considered unintentional radiators within scope of FCC Part 15) EU (e.g., EN 55011) by creating the concept of Group1 and Group2 appears to also cover (in Group 1) *any* generated radio frequency energy that is used by the equipment. This would include, for example, radio frequency energy generated by a microprocessor clock circuit in an industrial machine's controller. Have I got this right? Regards, Lauren Crane KLA-Tencor - ---------------------------------------------------------------- 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] <mailto:[email protected]> > All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) <http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected] <mailto:[email protected]> > Mike Cantwell <[email protected] <mailto:[email protected]> > For policy questions, send mail to: Jim Bacher <[email protected] <mailto:[email protected]> > David Heald <[email protected] <mailto:[email protected]> > - ---------------------------------------------------------------- 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.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. 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: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
