So, what will happen to PLC (PowerLine Communication) in US ? I know an application called CEBus and they operate in the frequency band 100kHz-400kHz. Those folks using CEBus will not meet the new conducted emission requirements. Maybe, that sort of equipment is not within the scope of FCC part 15 / 18 ?
Regards Amund > -----Opprinnelig melding----- > Fra: [email protected] > [mailto:[email protected]]Pa vegne av John Barnes > Sendt: 24. juli 2002 17:15 > Til: [email protected] > Emne: Changes to FCC Conducted Limits for Part 15 & 18 > > > > EMC-PSTC'ers, > There has been talk for several months about the FCC changing the > conducted emission limits for Part 15 and Part 18 devices. Well, it is > official. FCC docket 98-80 was published in the Federal Register on > July 10, 2002- volume 67, number 132, pages 45666-45671, see (all one > URL): > http://frwebgate1.access.gpo.gov/ > cgi-bin/waisgate.cgi?WAISdocID=38880224794+0+0+0&WAISaction=retrieve > > FCC Part 15, incorporating the new Section 15.107, may be downloaded > from > http://www.fcc.gov/oet/info/rules/part15/part15_5_30_02.pdf > > This will not be printed in the Code of Federal Regulations (CFR), > downloadable from the National Archives and Records Administration > (NARA) at: > http://www.access.gpo.gov/nara/cfr/cfr-table-search.html > until spring 2003. > > This change probably will not affect products that have been marketed in > Taiwan and Japan, because they have already had to meet the CISPR limits > for those markets. But products that are sold only in the US/Canada may > be affected, because conducted emissions are now to be tested clear down > to 150kHz, versus the former 450kHz lower limit. > > The new conducted emission limits are: > * Mains port on Class B devices: > - 66dB(uV) quasi-peak and 56dB(uV) average at 0.15MHz, to > 56dB(uV) quasi-peak and 46dB(uV) average at 0.50MHz, decreasing > linearly with the logarithm of the frequency. > - 56dB(uV) quasi-peak and 46dB(uV) average from 0.50MHz to 5MHz. > - 60dB(uV) quasi-peak and 50dB(uV) average from 5MHz to 30MHz. > * Mains port on Class A devices: > - 79dB(uV) quasi-peak and 66dB(uV) average from 0.15MHz to 0.50MHz. > - 73dB(uV) quasi-peak and 60dB(uV) average from 0.50MHz to 30MHz. > > Paragraph 15 of FCC Docket 98-80, Transition Provisions, says that FCC > part 15/18 products may be authorized using the old or the new FCC > limits for two years (until July 10, 2004). After July 10, 2004, FCC > part 15/18 products must be authorized using the new FCC limits. > Furthermore, the new limits will apply to all FCC part 15/18 products > that are manufactured or imported after three years (after July 10, > 2005). > > So for the next two or three years you have a third option for meeting > FCC Part 15/18 requirements: > 1. Meet the old FCC conducted-emission and radiated-emission limits. > 2. Meet CISPR conducted-emission and radiated-emission limits. > 3. Meet CISPR conducted-emission limits and the old FCC radiated- > emission limits. > John Barnes > dBi Corporation > http://www.dbicorporation.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: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [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://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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [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://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
