Presentation on theme: "Relation to present CISPR Standards Don Heirman. Sept. 20122 Copyright 2012 Relations between Old/New Standards z CISPR 13 (Receiver Emissions) and CISPR."— Presentation transcript:
Sept. 20122 Copyright 2012 Relations between Old/New Standards z CISPR 13 (Receiver Emissions) and CISPR 22 (ITE Emissions) remain in place until withdrawn z CISPR 20 (Receiver Immunity) and CISPR 24 (ITE Immunity) remain in place until withdrawn zCISPR 32 takes the place of CISPR 13 and CISPR 22 zCISPR 35 (not yet published) takes the place of CISPR 20 and CISPR 24 zANSI C63.4 covers emission measurement procedures (not limits which are given by the FCC). CISPR 22 contains most of what is in C63.4. zCISPR 32 has similar procedures to that in C63.4. Significant differences was covered in our day and a half workshop H
Sept. 20124 Copyright 2012 Using IEC Standards zIEC standards are voluntary zNational administrations may reference or adopt or adapt these standards for regulatory purposes yNote adaption means that there may be modifications (common) to the IEC standard made when converted. zCertain countries immediately or near immediately adopt the latest edition of a standard or adopt a totally new standard that is needed for their use zOther countries or regions presents a transition period which allows the present standard to continue to be used up to a point where the new or replacement standard is only allowed for use and existing standards are withdrawn. H
Sept. 20125 Copyright 2012 FCC using ANSI Standards zUS Federal Communications Commission may reference or adopt or adapt these standards for regulatory purposes yNote adaption means that the FCC may not accept all clauses in the ANSI standards. There are no modifications per se but the FCC may have additional requirements on the same subject. zTo formally have ANSI standards referenced, the FCC issues a Notice of Proposed Rule Making (NPRM) proposing adoption of a standard zPublic comment is received and depending on acceptance of some or all of the public comments, either a Further NPRM is issued (when there are major changes in the rule making requiring another round of comments) or if the FCC is convinced what is needed after taking into account comments a Report and Order is issued which is then US Federal law H
IEC Participation zRequest technical advisor (TA) of the US National Committee of the IEC technical advisory group (TAG) to join the IEC committee of interest yDave Arnett is CISPR/I TA zTAG membership is voted by existing TAG members zIf voted to join, pay USNC participation fee zComment or provide technical input on subjects currently being discussed in the IEC subcommittee for which the TAG is following zJoin IEC working group and attend meetings or contribute inputs for other TAG members to present for you zMeetings are generally once a year
ANSI C63 Participation zWorking group membership is open to all zSubmit request to WG chair yA one time fee may be assessed yActive membership rules apply yExpect technical contribution yMembership does not mean being able to ballot on standards yWork largely done by electronic means zFor more influence, join subcommittee; membership is voted by existing SC members zMain committee yDoes final balloting of standards yIs comprised of organizations and single person companies yMeetings are generally at least twice a year
Source of FCC Measurement Procedures zWhat Measurement Procedures Should Be Used? zA number of measurement procedures have been identified and can be found in: yFCC Rules yIndustry Standards yText of the Report and Order yPublic Notice Issued by the Commission yKnowledge Database zSee the FCC Measurement Techniques Web Page for a listing of measurement procedures: yhttp://www.fcc.gov/oet/ea/eameasurements.html
FCC Flexibility in Referencing Standards zSection 2.947 provides options for the FCC to accept measurement procedures zThe Commission will accept data which has been measured in accordance with the following standards or measurement procedures: yThose set forth in bulletins or reports prepared by the Commission's Office of Engineering and Technology. yThose acceptable to the Commission and published by national engineering societies such as the EIA, the IEEE, and ANSI. yAny measurement procedure acceptable to the Commission may be used to prepare data demonstrating compliance with the requirements of this chapter.
Use of CISPR 22 Limits zRevision of Part 15 of the Rules to Harmonize the Standards for Digital Devices with International Standards yET Docket 92-152, September 17, 1993 xThis rulemaking only allows for the use of CISPR 22 (third edition) limits as an alternative to the radiated emission limits in the frequency range 30 MHz to 1 GHz. yET Docket 98-80 (FCC 02-157), May 30, 2002 xThis rulemaking changed the FCC limits for line conducted emissions to be the same as the CISPR limits.
Use of CISPR 22 Limits zRadiated Emission Limits yRadiated emission limits in the range 30 MHz to 1 GHz may be used as alternative limits to limits in §15.109. ySection 15.109(g) xDigital devices may be shown to comply with the standards contained in the Third Edition of CISPR Pub 22 (1997), Information Technology Equipment – Radio Disturbance Characteristics – Limits and Methods of Measurement yMeasurement methods in C63.4-2003 are still required (§15.31) yStill subject to radiated emission limits in §15.109 above 1 GHz
Use of CISPR 22 Limits zLine Conducted Emissions yLine conducted emissions measurement must be made using U.S. power voltages and frequencies. yMeasurement methods in C63.4-2003 are still required (§15.31) y§15.107(c) – Conducted Emissions xITE – Limits are the same for both FCC and CISPR 22 y§18.307 – Conducted Emissions xConsumer ISM equipment (microwave ovens) – Limits are the same for both FCC and CISPR 11
ANSI C63.4 Standard referenced by FCC z2.948(b) – Normalized Site Attenuation for radiated emissions test facility z2.948(d) – Declaration of conformity yTested by a recognized accredited testing laboratory yAccredited to ISO/IEC 17025 with scope covering FCC Part 15 and C63.4 yForeign testing laboratories subject to terms of a government- to-government MRA z15.31 – Measurement standards for intentional and unintentional transmitters yC63.4-2003 excluding 126.96.36.199, 5.7, and 9
Measurement Procedures z47 CFR 15.31(a)(6) specifies use of ANSI C63.4 (2003) for most intentional and unintentional radiators zExcluded sections: yClause 188.8.131.52 – Rod antennas not permitted yClause 5.7 – Artificial hand not permitted yClause 9 – Absorbing clamp not permitted yClause 14 –Click relaxation not permitted
C63.4-2009 Public Notice zFCC Recognizes C63.4-2009 and C63.10- 2009 yPublic Notice, DA 09-2478, November 25, 2009 yOET clarifies use of C63.4-2009 and C63.10- 2009 for compliance testing of intentional and unintentional radiators under Part 15
For more information ze-CFR – FCC Rules are available on line at: yhttp://ecfr.gpoaccess.gov/cgi/t/text/text- idx?c=ecfr&tpl=%2Findex.tplhttp://ecfr.gpoaccess.gov/cgi/t/text/text- idx?c=ecfr&tpl=%2Findex.tpl zEquipment Authorization Page yhttp://www.fcc.gov/oet/ea/http://www.fcc.gov/oet/ea/ zKnowledge Database (KDB) yhttps://apps.fcc.gov/oetcf/kdb/index.cfmhttps://apps.fcc.gov/oetcf/kdb/index.cfm yRecent KDB publications yMajor guidance publications
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