CISPR 24-2010 Information technology equipment - Immunity characteristics - Limits and methods of measurement《信息技术设备 抗扰度 限值和测量方法》.pdf

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1、 CISPR 24Edition 2.0 2010-08INTERNATIONAL STANDARD NORME INTERNATIONALEInformation technology equipment Immunity characteristics Limits and methods of measurement Appareils de traitement de linformation Caractristiques dimmunit Limites et mthodes de mesure CISPR24:2010 INTERNATIONAL SPECIAL COMMITTE

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16、s sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 CISPR 24Edition 2.0 2010-08INTERNATIONAL STANDARD NORME INTERNATIONALEInformation technology equipment Immunity characteristics Lim

17、its and methods of measurement Appareils de traitement de linformation Caractristiques dimmunit Limites et mthodes de mesure INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XICS 33.100.10 PRICE CODECODE PRIXISBN 978-2-88912-163-2INTERNATIONAL SPECIAL COMMITTEE ON

18、 RADIO INTERFERENCE COMIT INTERNATIONAL SPCIAL DES PERTURBATIONS RADIOLECTRIQUES Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 CISPR 24 IEC:2010 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope and object7 2 Normative

19、references7 3 Terms and definitions .8 4 Immunity test requirements.11 4.1 General .11 4.2 Particular requirements11 4.2.1 Electrostatic discharges (ESD).11 4.2.2 Electrical fast transients (EFT) .12 4.2.3 Continuous radio frequency disturbances .12 4.2.4 Power-frequency magnetic fields13 4.2.5 Surg

20、es.13 4.2.6 Voltage dips and interruptions13 5 Applicability 13 6 Conditions during testing.14 6.1 General conditions.14 6.2 Particular conditions (EUT operational modes, etc.) .15 7 Performance criteria .15 7.1 General performance criteria .15 7.2 Performance criterion A .15 7.3 Performance criteri

21、on B .15 7.4 Performance criterion C.15 7.5 Particular performance criteria.16 8 Product documentation .16 9 Measurement uncertainty16 10 Immunity requirements .16 Annex A (normative) Telephony terminal equipment .19 Annex B (normative) Data processing equipment29 Annex C (normative) Local area netw

22、orks (LAN).33 Annex D (normative) Printers and plotters 34 Annex E (normative) Copying machines .35 Annex F (normative) Automatic teller machines (ATM)36 Annex G (normative) Point of sale terminals (POST) 38 Annex H (normative) xDSL Terminal equipment40 Bibliography44 Figure 1 Description of ports 9

23、 Figure A.1 Example sound coupling set-up between the acoustic output device of a telephone handset and an artificial ear for detecting demodulated sound pressure level.21 Figure A.2 Example test set-up for measuring the sound pressure level from the acoustic output device of a telephone handset.23

24、Figure A.3 Test setup for measuring the reference sound pressure level from a speaker/hands free phone.24 Figure A.4 Demodulation on analogue lines, set up.25 CISPR 24 IEC:2010 3 Figure A.5 Example of typical small key telephone system or PABX 27 Figure H.1 DSL access system configuration 40 Table 1

25、 Immunity, enclosure port16 Table 2 Immunity, signal ports and telecommunication ports.17 Table 3 Immunity, input d.c. power port (excluding equipment marketed with a a.c./d.c. power converter)17 Table 4 Immunity, input a.c. power ports (including equipment marketed with a separate a.c./d.c power co

26、nverter) 18 Table A.1 Criteria applied to TTE functions, used during continuous disturbances testing.19 Table A.2 Maximum acoustic demodulated levels at an ear piece .22 Table A.3 Maximum acoustic demodulated levels relative to reference level23 Table A.4 Maximum demodulated differential mode signal

27、s at analogue ports.25 Table A.5 TTE performance criteria for spot frequency tests .26 Table A.6 TTE performance criteria for non-continuous radio frequency disturbances .26 Table A.7 Test configurations and performance assessment methods applicable to a PABX and associated terminals for continuous

28、RF disturbance tests .28 Table H.1 ITU-T recommendations for xDSL systems .41 Table H.2 Example cable attenuation41 4 CISPR 24 IEC:2010 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INFORMATION TECHNOLOGY EQUIPMENT IMMUNITY CHARACTERISTICS LIMITS AND METHODS OF MEASUREMENT FOREWORD 1) The Internationa

29、l Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic f

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36、access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including

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38、pon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the element

39、s of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard CISPR 24 has been prepared by CISPR subcommittee I: Electromagnetic compatibility of information technology equipment, multimedia equ

40、ipment and receivers. This second edition cancels and replaces the first edition published in 1997, and its Amendments 1(2001) and 2 (2002). It is a technical revision. This edition includes the following significant technical changes with respect to the previous edition: dated references updated; o

41、ption of using a 4 % step size for continuous conducted immunity test deleted; revision of Annex A for telephony equipment including methodology for measuring the demodulation from a speaker / hands free device; inclusion of new annex related to DSL equipment. CISPR 24 IEC:2010 5 The text of this st

42、andard is based on the following documents: FDIS Report on voting CIS/I/331/FDIS CIS/I/334/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directiv

43、es, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replac

44、ed by a revised edition, or amended. 6 CISPR 24 IEC:2010 INTRODUCTION This CISPR publication establishes uniform requirements for the electromagnetic immunity of information technology equipment. The test methods are given in the referenced Basic EMC Immunity Standards. This publication specifies ap

45、plicable tests, test levels, product operating conditions and assessment criteria. CISPR 24 IEC:2010 7 INFORMATION TECHNOLOGY EQUIPMENT IMMUNITY CHARACTERISTICS LIMITS AND METHODS OF MEASUREMENT 1 Scope and object This CISPR publication applies to information technology equipment (ITE) as defined in

46、 CISPR 22. The object of this publication is to establish requirements that will provide an adequate level of intrinsic immunity so that the equipment will operate as intended in its environment. The publication defines the immunity test requirements for equipment within its scope in relation to con

47、tinuous and transient conducted and radiated disturbances, including electrostatic discharges (ESD). Procedures are defined for the measurement of ITE and limits are specified which are developed for ITE within the frequency range from 0 Hz to 400 GHz. For exceptional environmental conditions, speci

48、al mitigation measures may be required. Owing to testing and performance assessment considerations, some tests are specified in defined frequency bands or at selected frequencies. Equipment which fulfils the requirements at these frequencies is deemed to fulfil the requirements in the entire frequen

49、cy range from 0 Hz to 400 GHz for electromagnetic phenomena. The test requirements are specified for each port considered. NOTE 1 Safety considerations are not covered in this publication. NOTE 2 In special cases, situations will arise where the level of disturbance may exceed the levels specified in this publication, for example where a hand-held transmitter