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1、ANSI C63.022-1996 Except for the USA foreword, identical to ClSPR 22 (1993) and Amendment 1 (1995)l American National Standard for Limits and Methods of Measurement of Radio Disturbance Characteristics of Information Technology Equipment Accredited Standards Committee on Electromagnetic Compatibilit
2、y, C63 accredited by the American National Standards Institute Secretariat Institute of Electrical and Electronics Engineers, Inc. Approved 27 September 1996 American National Standards Institute Abstract: Emission limits are provided that are an are acceptable alternative for limits of the current
3、issue of FCC Part 15, Subpart B, for Information Technology Equipment (ITE). This documenit re- publishes ClSPR 22 (1993) and Amendmient 1 (1!395) as an American National Standard, ANSI C63.022-1996, which is recognized within the U.S. Keywords: conducted emissions, emission limits, emission measure
4、ment, information technotlogy equipment, radiated emissions, radio distuirbance, ipadio interference The Institute of Electrical and Electronics Engineers, Inc. 345 East 47th Street, New York, NY 1001 7-2394, USA Copyright 0 1997 by the Institute of Electrical and Electronics Engineers, Inc. All rig
5、hts reserved. Published 1997. Printed in the United States of America. ISBN 1-55937-924-3 No part o f this publication may be reproduced in any form, in a n 1 electronic retrieval system or otherwise, without the prior written permission o f the publisher. Authorized licensed use limited to: Peking
6、University. Downloaded on December 26,2010 at 15:45:18 UTC from IEEE Xplore. Restrictions apply. American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid th
7、e manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, market- ing, purchasing, or using products, processes, or procedures not conforming to the st
8、andard. Amer- ican National Standards are subject to periodic review and users are cautioned to obtain the latest editions. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be take
9、n to reaf- firm, revise, or withdraw this standard no later than five years from the date of publication. Purchas- ers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Authorization to photocopy portions
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11、vice, 222 Rosewood Drive, Danvers, MA 01923 USA; (508) 750-8400. Permission to photocopy portions of any individual standard for educational class- room use can also be obtained through the Copyright Clearance Center. Authorized licensed use limited to: Peking University. Downloaded on December 26,2
12、010 at 15:45:18 UTC from IEEE Xplore. Restrictions apply. Introduction (This introduction is not part of ANSI C63.022-1996, American National Standard for Limits and Methods of Measure- ment of Radio Disturbance Characteristics of Information Technology Equipment.) At the time that the Accredited St
13、andards Committee on Electromagnetic Compatibility, C63, approved this standard, it had the following membership: Ralph M. Showers, Chair Edwin L. Bronaugh, Vice Chair Rosemary Tennis, Secretary ACIL Ross A. Hansen Alliance for Telecommunications Industry Solutions. . John E Lichtig Walter Poggi 0.
14、J. Gusella (Alt.) B arbarawendling Edward E Hare . Dan Martinac PaulPrisaznuk . . . . . . . . . . . . . . . Chf-:. .“ ( i :I I )d! Jon Curtis (Alt.) American Automobile Manufacturers Association (AAMA) Terry Rybak American Radio Relay League . Aeronautical Radio, Inc. (ARINC) Association of A -*? ri
15、i: : : R : i I w - 3 i Association of 7:1:;i:.iii I iri “:!. Canadian Standards Association vacant . .vacant . Cellular Telephone Industry Association . Center for the Study of Wireless EMC . . Hank Grant Electric Light and Power Group, EEI . Gary N Miller (Alt.) l-(l-L 1 . Electronic Industries Ass
16、ociation (G-46 Chair) . John C. Windell Federal Communications Commission (Chair SC-3) Richard B. Engelman Food and Drug Administration Health Industry Manufacturers Association . Hewlett-Packard Company . Institute of Electrical and I ., . lStUS Electronic I * “ ESD Assoc Federal Communications C.
17、Smith .* .L. A. (Art) Wall Hugh L. Van Tuyl (Alt.) Jeffrey Silberberg (Alt.) Randall L. Anderson (Alt.) . Paul Ruggera Eric V. Anderson Ray Magnuson . Edwin L. Bronaugh Members-at-Large Ralph Calcavecchio Donald N. Heirman Nestor Kolcio Robert J. Egan Warren A. Kesselman Arthur H. Light Richard B. S
18、chulz Ralph M. Showers J. L. Norman Violette William T. Rhoades William E Hanrahan (dit.) Information Technology Industry Council (ITI) H. R. Hofmann William J. Murphy Kenneth E. Gettman (Alt.) National Aeronautics and Space Administration vacant National Association of Broadcasters . Kelly Williams
19、 Marvin Ziskin (Ah.) . Bill C. Wong Mac Slayton Paul Andersen SAE (Land Vehicle) . . 111 Authorized licensed use limited to: Peking University. Downloaded on December 26,2010 at 15:45:18 UTC from IEEE Xplore. Restrictions apply. SAE (Chair AE-4) David A. Graham SAE (Aerospace) . Herbert Mertel South
20、west Research Institute (SwRI) . James J. Polonis Telecom. Industry Association . Eric J. Schimmel TUV Product Service . . Daniel D. Hoolihan Underwriters Laboratories Willard Tuthill Unisys Corporation . Wallace Amos John Zentner U. S. Department of Commerce (National Institute of Standards and Tec
21、hnology) U. S. Department of Energy (Oak Ridge National Laboratory). U. S. Department of Energy (Bonneville Power Administration) . Vernon L. Chartier U. S. Department of the Navy . U. S. Department of Transportation (Federal Aviation Admininistration) . Robert Frazier WIN Forum, AT their existence
22、does not in any respect pre- clude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. vii Authorized licensed use limited to: Peking University. Downloaded on December 26,2010 a
23、t 15:45:18 UTC from IEEE Xplore. Restrictions apply. ANSI C63.022-1996 USA FOREWORDTO The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to i
24、ssue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. 4.Technical comparison o f CISPR 22 and FCC Part 15B
25、 limits The FCC endorses the use of CISPR 22 emission limits as an alternative to FCC Part 15B limits for digital devices provided that the data is obtained per the measurement procedures of ANSI C 63.4-1992. Since these measurement procedures are similar to measurement procedures specified in CISPR
26、 16, a commonal- ity of measurement procedures exist. One of the major differences is that the FCC allows measurements of personal computers for radiated emissions at a 3 m test distance whereas CISPR measures at 10 m but allows extrapolation of data from the 3 m to the 10 m distance. The FCC also a
27、llows extrapolation of data from the 10 m distance to the 3 m distance. However, extrapolation should be viewed with extreme caution. The other major difference is that CISPR 22 requires maximization of all emissions, whereas ANSI C63.4- 1992 maximizes the highest emissions with respect to the limit
28、. Hence the reason for the FCC selecting the ANSI C63.4-1992 procedures for its flexibility and more detailed measurement methods. Note that the pro- posed next edition of CISPli 22 will incorporate most of the procedures in ANSI C63.4-1992, leading to fur- ther harmonization. 4.1 Note on limit clas
29、ses The FCC Part 15 emission protection limits are divided into the more restrictive residentiaVdomestic (Class B) and, the less restrictive commercialhndustrial (Class A) limit classes (environments). In the USA and in Canada the limit classifications are set by manufacturers and depend on how the
30、product is marketed. CISPR 22 also allows the manufacturer to set the classification of equipment, but requires a warning state- ment that assigns responsibility to the user for correction of any interference problems that may occur if the Class A equipment is installed in a domestic environment. In
31、 the European Union (EU) product standards exist for a number of product families, e.g., ITE; household appliances; receivers; industrial, scientific and medical (ISM) equipment; etc. If a product standard does not exist for a given product, the generic standard is applied instead. This gcneric stan
32、dard requires that equip- ment for use in residential, commercial, and light industry environments conform to the Class B limits of CISPR 22. 4.2 Conducted emission limit voltage on power lines 4.2.1 Class B equipment Figure 1 shows a comparison of the Class B conducted power line limits. It must be
33、 noted that the CISPR measurement range starts at 0.15 MHz and the FCC starts at 0.45 MHz, and both end at 30 MHz. The aver- age detector limit is 10 dB lower for CISPR than the associated quasi-peak detector limit. The FCC defines a lower limit differently. The following wording comes from ANSI C63
34、.4-1992, 11 S.2: “If the amplitude measured in the quasi-peak mode is at least 6 dB higher than the amplitude measured in the average mode, the level measured in the quasi-peak mode may be reduced by 13 dB before comparing it to the limit. If the 13 dB reduced quasi-peak mode level is below the limi
35、t, the EUT is considered to have met the limit requirements.” . VI11 Authorized licensed use limited to: Peking University. Downloaded on December 26,2010 at 15:45:18 UTC from IEEE Xplore. Restrictions apply. CISPR 22 (1 993) and AMENDMENT 1 (1 995) ANSI C63.022-1996 FREQUENCY IN MHz FCC QP Limit ma
36、y bo reduced by 13 dB if QP measurement is 6 dB or more greater than average measurement. Figure 1-Power line conducted emission limit specified in FCC Part 15B and CISPR 22 for Class B ITE 4.2.2 Class A equipment Figure 2 shows the comparison of the Class A conducted power line limits. The CISPR me
37、asurement range starts at 0.15 MHz and the FCC starts at 0.45 MHz and both The average detector limit is 13 d E 3 1owt:r for CISPR than the quasi-peak detector limit. The -13 dB rule applies to the FCC limit as described in 4.2.1. 4.3 Radiated emission limits The radiated emission limits for Class A
38、 and B are shown in Figure 3. The data is normalized for a 10 m measurement distance using linear distance extrapolation. NOTE-The measurement distance in CISPR 22 for both Class A and Class B equipment is set at 10 m. The FCC P a r t 15 measurement distance for Class B equipment is 3 m. Extrapolati
39、on between 3 m and 10 m should be viewed with extreme caution. 5. Measurement method comparison Since ANSI C63.4-1992 is the FCC-required document for measuring emissions, the USA acceptance of CISPR 22 is limited to the limits as discussed in Clause 4. 6. Implementation Use of CISPR 22 limits shall
40、 be noted when applying this standard in demonstrating compliance with USA FCC Regulations. A positive statement to the use of ANSI C63.4-1992 measurement procedures shall1 also be made. ix Authorized licensed use limited to: Peking University. Downloaded on December 26,2010 at 15:45:18 UTC from IEE
41、E Xplore. Restrictions apply. ANSI C63.022-1996 FREQUFNCY IN MHr *FCC QP Limit may be reduced by 13 dB if QP measurement is 6 dB or more greater than averago measurement. Figure 2-Power line conducted emission limit specified in FCC Part 15B and ClSPR 22 for Class A ITE 30 40 50 60 80 100 200 300 40
42、0 600 FREQUENCY IN MHz Figure 3-Radiated emission limit at 10 m specified in FCC Part 15B and ClSPR 22 for Class A and B ITE X Authorized licensed use limited to: Peking University. Downloaded on December 26,2010 at 15:45:18 UTC from IEEE Xplore. Restrictions apply. COMMISSION CISPR 22 ELECTROTECH N
43、 IQU E Deuxibrne - la Publication 617 de la C E I: Symboles graphiques pour schhas. Les symbles et signes contenus dans la prknte publication ont 6 1 1 5 soit repris des Publications 27 ou 617 de la CEI. soit qkcifiquement approwQ aux fins de ceae publication. Publications du CJS.P.R. Laaention du l
44、edeur est atair - I E C Publication 617: Graphical symbols for diagrams. The symbols and signs contained in the present publid have either been taken from IEC Publications 27 or 617. have bem specifically approved for he purpose of this publicatioi C.1S.P.R. publications The attention of readen k dr
45、awn t o pages 3 and 4 oft covex. which l i t C.LS.P.R. publications Authorized licensed use limited to: Peking University. Downloaded on December 26,2010 at 15:45:18 UTC from IEEE Xplore. Restrictions apply. Publication CISPR 22 de la CEI (Deuxibme edition - 1993) - - .-2:L _. I Antenne , , Antenna
46、. IEC Publication ClSPR 22 (Second edition - 1993) x R _ / - - - Appareil en essai Test sample / / / / . Limites et methodes de mesure des caractbristiques de perturbations radioklectriques produites par les appareils de traitement de Iinformation Limits and methods of measure.ment of radio disturba
47、nce characteristics of information technology equipment C O R R I G E N D U M Page 32 Page 32 Figure 1, remplacer le schema existant par le nouveau schema ci-dessous: Figure 1, replace the existing diagram by the new diagram below: Grand diamhtre (MD) = 2R Major diameter (MD) = 2R -2. -1- -. I I ! /
48、 Petit diamZItre (mD) = Rp / A - I( Minor diameter (mD) = R F ! / I , I Fevrier 1995 February 1995 Authorized licensed use limited to: Peking University. Downloaded on December 26,2010 at 15:45:18 UTC from IEEE Xplore. Restrictions apply. COMMISSION INTERNATIONALE ELECTROTECHNIQUE CISPR 22 Deuxieme
49、Mition Second edition 1993-1 2 INTERNATIONAL ELECTROTECHN ICAL COMMISSION COMITG INTERNATIONAL SPECIAL DES PERTURBATIONS RADIOELECTRIQUES INTERNATIONAL SPECIAL COMMlTfEE ON RADIO INTERFERENCE Limites et methodes de mesure des caracteristiques de perturbations radioelectriques produites par les appareils de traitement de Iinformation Limits and methods of measurement of radio disturbance characteristics of information technology equipment 0 CEI 1993 Omits de repduction rbserves - Copyri