Hi all! Thanks for responding. I have tried to get in touch with some folks at FCC today, if I manage to get through, I will return with their information / interpretations.
Have a nice weekend! Best regards Amund Westin, Oslo/Norway On Fri, 3 Aug 2001 00:29:23 -0700 Don Rhodes <[email protected]> wrote: > >I second Jack's thoughts on the wording from part 15, the wording "generated >or used" is very clear. Furthermore, it seems obvious that a PLL generates a >"new" fundamental frequency when multiplying its input frequency. This in >turn, of course, creates a new set of harmonics and subharmonics related to >the PLL's output frequency. Unfortunately, the FCC's rules do not make >exceptions for generated signals which are only used internal to an IC. I >know, anyone who's ever struggled with the emissions from a noisy PLL, like >myself, has wished for such a break in the rules. > >Regards, >Don >EMC Engineering >InFocus Corp. > >> ---------- >> From: Cook, Jack[SMTP:[email protected]] >> Reply To: Cook, Jack >> Sent: Thursday, August 02, 2001 10:27 PM >> To: 'John Harrington'; Gary McInturff >> Cc: [email protected] >> Subject: RE: FCC - radiated emission up to 10th harmonic >> >> >> >> So far, I haven't seen anyone quote the actual wording in FCC Part 15. >> Here >> it is, from the table in para. 15.33 (4). >> >> "Highest frequency generated or used in the device or >> on which the device operates or tunes (MHz)" >> >> It doesn't appear to concern itself with *how* the signal is generated >> (ocillator, PLL, etc.) or whether it's a fundamental or not. So, it seems >> clear enough to me. Or maybe I'm missing something. >> >> Regards, >> Jack >> Xerox EMC >> >> >> ------------------------------------------- >> 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: >> [email protected] >> with the single line: >> unsubscribe emc-pstc >> >> For help, send mail to the list administrators: >> Michael Garretson: [email protected] >> Dave Heald [email protected] >> >> For policy questions, send mail to: >> Richard Nute: [email protected] >> Jim Bacher: [email protected] >> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.rcic.com/ click on "Virtual Conference Hall," >> > >------------------------------------------- >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: > [email protected] >with the single line: > unsubscribe emc-pstc > >For help, send mail to the list administrators: > Michael Garretson: [email protected] > Dave Heald [email protected] > >For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > >All emc-pstc postings are archived and searchable on the web at: > http://www.rcic.com/ click on "Virtual Conference Hall," > > -- Get your firstname@lastname email for FREE at http://Nameplanet.com/?su ------------------------------------------- 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
