Neil, Work is progressing in CISPR SC I to generate limits above 1 GHz for CISPR 22. This would be a requirement in more than just the EU. There is much disagreement as to what the limits should be. The latest proposal that was out for comments used the FCC limits up to 18 GHz, but with a modified test procedure. Comments from a number of European countries claim that these limits are not strict enough and some are pushing for limits about 6 dB lower than the FCC limits.
CISPR SC I meets next week in Christchurch, New Zealand and this will be a topic of discussion at the meetings. We on the US delegation will be trying to keep the voices for tighter limits from being successful. These limits have been an issue for a number of years and progress is SLOW. For now, test above 1 GHz for the US and you are covered for the rest of the world as we are the only country with limits there. Ghery Pettit Intel Member, USNC IEC / CISPR SCI TAG -----Original Message----- From: Neil Helsby [mailto:nei...@solid-state-logic.com] Sent: Wednesday, September 18, 2002 3:54 AM To: emc-p...@majordomo.ieee.org Subject: Clock frequencies I read somewhere, and now cannot find, a reference to FCC requirements with respect to the relationship between clock frequency and highest emissions scan frequency. Can anyone help, preferably pointing to the FCC document? I also seem to remember similar comments being considered by the EU. Can anyone advise on these? Many thanks, Neil Helsby ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.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" ------------------------------------------- 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"
