To quote from BS EN 55032:2012 with 2014 update 3.1.19 highest internal frequency Fx highest fundamental frequency generated or used within the EUT or highest frequency at which it operates NOTE This includes frequencies which are solely used within an integrated circuit.
Chuck McDowell Compliance Specialist Meyer Sound Laboratories Inc. From: Gary McInturff [mailto:[email protected]] Sent: Thursday, January 28, 2016 11:16 AM To: [email protected] Subject: [PSES] Highest clock frequency in a device. I was looking through standards I have but can't find an absolute description of highest clock frequency. The overall device has clocks well below 105MHz, the point at which the spectrum above 1 GHZ must be investigated during radiated emissions. However one of the IC's has an internal frequency well above that. My understanding of highest clock would include this IC internal, contained within the chip and not provided to any I/O pins. Others disagree, but I can't find any explicit documentation that defines this. Can anyone pin point a textual definition? Thank you - ---------------------------------------------------------------- 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]>> NOTICE: This email may contain confidential information. Please see http://www.meyersound.com/confidential/ for our complete policy. - ---------------------------------------------------------------- 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]>
