BS EN 55016-2-2-2011 Specification for radio disturbance and immunity measuring apparatus and methods Methods of measurement of disturbances and immunity Measurement of disturbance.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationSpecification for radio disturbance and immunity measuring apparatus and methodsPart 2-2: Methods of measurement of disturbances and immunity Measurement of disturbance powerBS E

2、N 55016-2-2:2011National forewordThis British Standard is the UK implementation of EN 55016-2-2:2011. It is identical to CISPR 16-2-2:2010. It supersedes BS EN 55016-2-2:2004 which will be withdrawn on 2 January 2014.The UK participation in its preparation was entrusted by Technical Committee GEL/21

3、0, EMC - Policy committee, to Subcommittee GEL/210/12, EMC basic, generic and low frequency phenomena Standardization.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contr

4、act. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 64431 3 ICS 33.100.10; 33.100.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30

5、 June 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 55016-2-2:2011EUROPEAN STANDARD EN 55016-2-2 NORME EUROPENNE EUROPISCHE NORM April 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europ

6、isches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 55016-2-2:2011 E ICS 33.100.10; 33.100.20 Supersedes EN 55016-2-2:2004 + A1:20

7、05 + A2:2005English version Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-2: Methods of measurement of disturbances and immunity - Measurement of disturbance power (CISPR 16-2-2:2010) Spcifications des mthodes et des appareils de mesure des perturbations r

8、adiolectriques et de limmunit aux perturbations radiolectriques - Partie 2-2: Mthodes de mesure des perturbations et de limmunit - Mesure de la puissance perturbatrice (CISPR 16-2-2:2010) Anforderungen an Gerte und Einrichtungen sowie Festlegung der Verfahren zur Messung der hochfrequenten Straussen

9、dung (Funkstrungen) und Strfestigkeit - Teil 2-2: Verfahren zur Messung der hochfrequenten Straussendung (Funkstrungen) und Strfestigkeit - Messung der Strleistung (CISPR 16-2-2:2010) This European Standard was approved by CENELEC on 2011-01-02. CENELEC members are bound to comply with the CEN/CENEL

10、EC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CE

11、NELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official version

12、s. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, R

13、omania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 55016-2-2:2011EN 55016-2-2:2011 - 2 - Foreword The text of document CISPR/A/877/CDV, future edition 2 of CISPR 16-2-2, prepared by CISPR SC A, Radio-interference measurements and statistical methods, was submitted t

14、o the IEC-CENELEC parallel vote and was approved by CENELEC as EN 55016-2-2 on 2011-01-02. This European Standard supersedes EN 55016-2-2:2004 + A1:2005 + A2:2005. This EN 55016-2-2:2011 includes the following significant technical changes with respect to EN 55016-2-2:2004 + A1:2005 + A2:2005: provi

15、sions for the use of spectrum analyzers for compliance measurements (Annex D) and the use of FFT-based test instrumentation (Clauses 3, 6 and 8) are now included. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC sha

16、ll not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2011-10-02 latest date by which the national standard

17、s conflicting with the EN have to be withdrawn (dow) 2014-01-02 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard CISPR 16-2-2:2010 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the fo

18、llowing notes have to be added for the standards indicated: 1 CISPR 13 NOTE Harmonized as EN 55013. 2 CISPR 14-1:2005 NOTE Harmonized as EN 55014-1:2006 (not modified). 3 CISPR 16-2-1:2008 NOTE Harmonized as EN 55016-2-1:2009 (not modified). _ BS EN 55016-2-2:2011- 3 - EN 55016-2-2:2011 Annex ZA (no

19、rmative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of th

20、e referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year CISPR 16-1-1 2010 Specification for radio disturbance and immunity measuring a

21、pparatus and methods -Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus EN 55016-1-1 2010 CISPR 16-1-3 2004 Specification for radio disturbance and immunity measuring apparatus and methods -Part 1-3: Radio disturbance and immunity measuring apparatus - Ancillary equi

22、pment - Disturbance power EN 55016-1-3 2006 CISPR 16-1-4 -1 )Specification for radio disturbance and immunity measuring apparatus and methods -Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites for radiated disturbance measurements EN 55016-1-4 20102 )CISPR 16-4-2

23、 -1)Specification for radio disturbance and immunity measuring apparatus and methods -Part 4-2: Uncertainties, statistics and limit modelling - Uncertainty in EMC measurements EN 55016-4-2 20042)IEC 60050-161 1990 International Electrotechnical Vocabulary (IEV) - Chapter 161: Electromagnetic compati

24、bility - - 1) Undated reference. 2) Valid edition at date of issue. BS EN 55016-2-2:2011 2 CISPR 16-2-2 IEC:2010 CONTENTS 1 Scope.7 2 Normative references.7 3 Terms and definitions 7 4 Types of disturbance to be measured. 12 4.1 General .12 4.2 Types of disturbance . .12 4.3 Detector functions .12 5

25、 Connection of measuring equipment .13 5.1 General .13 5.2 Connection of ancillary equipment. 13 6 General measurement requirements and conditions .13 6.1 General .13 6.2 Disturbance not produced by the equipment under test .13 6.2.1 General . 13 6.2.2 Compliance testing . .13 6.3 Measurement of con

26、tinuous disturbance 13 6.3.1 Narrowband continuous disturbance. .13 6.3.2 Broadband continuous disturbance. .14 6.3.3 Use of spectrum analyzers and scanning receivers. 14 6.4 Operating conditions of the EUT . 14 6.4.1 General . 14 6.4.2 Normal load conditions.14 6.4.3 The time of operation .14 6.4.4

27、 Running-in time 14 6.4.5 Supply 14 6.4.6 Mode of operation . .14 6.5 Interpretation of measuring results14 6.5.1 Continuous disturbance . .14 6.5.2 Discontinuous disturbance 15 6.5.3 Measurement of the duration of disturbances . .15 6.6 Measurement times and scan rates for continuous disturbance .

28、15 6.6.1 General . 15 6.6.2 Minimum measurement times . .15 6.6.3 Scan rates for scanning receivers and spectrum analyzers 16 6.6.4 Scan times for stepping receivers . 17 6.6.5 Strategies for a spectrum overview using the peak detector.18 6.6.6 Timing considerations using FFT-based instruments 21 7

29、Measurements using the absorbing clamp23 7.1 Introduction to ACMM . 23 7.2 Application of the absorbing clamp measurement method . .24 7.2.1 General . 24 7.2.2 Frequency range.24 7.2.3 EUT unit dimensions 24 7.2.4 LUT requirements . .24 7.3 Requirements for measurements instrumentation and test site

30、 . .24 BS EN 55016-2-2:2011CISPR 16-2-2 IEC:2010 3 7.3.1 General . 24 7.3.2 Measuring receiver . .24 7.3.3 Absorbing clamp assembly24 7.3.4 Absorbing clamp test site requirements . .25 7.4 Ambient requirements. 26 7.5 EUT leads requirements .26 7.5.1 General . 26 7.5.2 Lead under test.26 7.5.3 Leads

31、 not under test 27 7.6 Test set-up requirements 27 7.6.1 General . 27 7.6.2 EUT set-up 27 7.6.3 LUT set-up.28 7.6.4 Absorbing clamp .29 7.6.5 Measurement cable. .29 7.7 Operating conditions of the EUT . 29 7.8 Measurement procedure .29 7.8.1 Ambient measurement procedure. .29 7.8.2 EUT measurement p

32、rocedure . .29 7.9 Determination of disturbance power . 31 7.10 Determination of the measurement uncertainty. 31 7.11 Compliance criteria 31 8 Automated measurement of emissions . 32 8.1 Precautions for automating measurements. .32 8.2 Generic measurement procedure 32 8.3 Prescan measurements 33 8.3

33、.1 Purpose . 33 8.3.2 Determination of the required measurement time . 33 8.3.3 Defining the prescan measurement . 33 8.4 Data reduction 34 8.5 Emission maximization and final measurement . .34 8.6 Post processing and reporting34 8.7 Emission measurement strategies with FFT-based measuring instrumen

34、ts . .34 Annex A (informative) Historical background to the method of measurement of the interference power produced by electrical household and similar appliances in the VHF range (see 7.1) . 35 Annex B (informative) Use of spectrum analyzers and scanning receivers (see Clause 6) . 38 Annex C (info

35、rmative) Scan rates and measurement times for use with the average detector 41 Annex D (normative) Determination of suitability of spectrum analyzers for compliance tests.45 Bibliography .46 Figure 1 Measurement of a combination of a CW signal (“NB”) and an impulsive signal (“BB”) using multiple swe

36、eps with maximum hold18 Figure 2 Example of a timing analysis.19 Figure 3 A broadband spectrum measured with a stepped receiver . 20 Figure 4 Intermittent narrowband disturbances measured using fast short repetitive sweeps with maximum hold function to obtain an overview of the emission spectrum . .

37、20 BS EN 55016-2-2:2011 4 CISPR 16-2-2 IEC:2010 Figure 5 FFT scan in segments . 22 Figure 6 Frequency resolution enhanced by FFT-based measuring instrument 23 Figure 7 Schematic drawing of the absorbing clamp measurement method 25 Figure 8 Side view of the absorbing clamp measurement set-up for tabl

38、e top EUTs . 28 Figure 9 Side view of the absorbing clamp measurement set-up for floor standing EUTs . .28 Figure 10 Process for reduction in measurement time32 Figure C.1 Weighting function of a 10 ms pulse for peak (“PK”) and average detections with (“CISPR AV”) and without (“AV”) peak reading; me

39、ter time constant 160 ms. .43 Figure C.2 Weighting functions of a 10 ms pulse for peak (“PK”) and average detections with (“CISPR AV”) and without (“AV”) peak reading; meter time constant 100 ms. .43 Figure C.3 Example of weighting functions (of a 1 Hz pulse) for peak (“PK”) and average detections a

40、s a function of pulse width: meter time constant 160 ms44 Figure C.4 Example of weighting functions (of a 1 Hz pulse) for peak (“PK”) and average detections as a function of pulse width: meter time constant 100 ms44 Table 1 Minimum measurement times for the four CISPR bands 16 Table 2 Minimum scan t

41、imes for the three CISPR bands with peak and quasi-peak detectors.16 Table 3 Sample scheme for an absorbing clamp measurement with an upper frequency bound of 300 MHz .30 Table 4 Sample scheme for an absorbing clamp measurement with an upper frequency bound of 1 000 MHz . 31 Table B.1 Minimum sweep

42、time/fastest scan rates . 39 Table C.1 Pulse suppression factors and scan rates for a 100 Hz video bandwidth. 42 Table C.2 Meter time constants and the corresponding video bandwidths and maximum scan rates . .42 Table D.1 Maximum amplitude difference between peak and quasi-peak detected signals . .4

43、5 BS EN 55016-2-2:2011CISPR 16-2-2 IEC:2010 7 SPECIFICATION FOR RADIO DISTURBANCE AND IMMUNITY MEASURING APPARATUS AND METHODS Part 2-2: Methods of measurement of disturbances and immunity Measurement of disturbance power 1 Scope This part of CISPR 16 specifies the methods of measurement of disturba

44、nce power using the absorbing clamp in the frequency range 30 MHz to 1 000 MHz. NOTE In accordance with IEC Guide 107, CISPR 16-2-2 is a basic EMC publication for use by product committees of the IEC. As stated in Guide 107, product committees are responsible for determining the applicability of the

45、 EMC standard. CISPR and its sub-committees are prepared to co-operate with product committees in the determination of the value of particular EMC tests for specific products. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated

46、references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. CISPR 16-1-1:2010, Specification for radio disturbance and immunity measuring apparatus and methods Part 1-1: Radio disturbance and immunity measuring

47、 apparatus Measuring apparatus CISPR 16-1-3:2004, Specification for radio disturbance and immunity measuring apparatus and methods Part 1-3: Radio disturbance and immunity measuring apparatus Ancillary equipment Disturbance power CISPR 16-1-4, Specification for radio disturbance and immunity measuri

48、ng apparatus and methods Part 1-4: Radio disturbance and immunity measuring apparatus Antennas and test sites for radiated disturbance measurements CISPR 16-4-2, Specification for radio disturbance and immunity measuring apparatus and methods Part 4-2: Uncertainties, statistics and limit modelling U

49、ncertainty in EMC measurements IEC 60050-161:1990, International Electrotechnical Vocabulary (IEV) Part 161:Electromagnetic compatibility 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-161, as well as the following apply. 3.1 absorbing clamp measurement method ACMM method for measurement of disturbance power of an equipment under test (EUT) by using an absorbing clamp dev