1、BRITISH STANDARDBS EN62333-2:2006Noise suppression sheet for digital devices and equipment Part 2: Measuring methods The European Standard EN 62333-2:2006 has the status of a British StandardICS 29.100.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g
2、3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN +A1:2015BS EN 62333-2:2006+A1:2015ISBN 978 0 580 85817 8Amendments/corrigenda issued since publicationDate Comments29 February 2016 Implementation of IEC amendment 1:2015 with CEN endorsemen
3、t A1:2015: Subclause 4.5 addedThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2006 The British Standards Institution 2016. Published by BSI Standards Limited 2016National forewordThis British Standard is the UK implementation of EN
4、62333-2:2006+A1:2015. It is identical to IEC 62333-2:2006+A1:2015. It supersedes BS EN 62333-2:2006 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EPL/51, Transformers, inductors, magnetic components and ferrite materials.A list of organizations repre
5、sented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.EUROPEAN ST
6、ANDARD EN 62333-2 NORME EUROPENNE EUROPISCHE NORM July 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All r
7、ights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62333-2:2006 E ICS 29.100.10 English version Noise suppression sheet for digital devices and equipment Part 2: Measuring methods (IEC 62333-2:2006) Plaque rduisant le bruit des dispositifs et appar
8、eils numriques Partie 2: Mthodes de mesure (CEI 62333-2:2006) Rauschunterdrckungsschicht fr digitale Gerte und Einrichtungen Teil 2: Messverfahren (IEC 62333-2:2006) This European Standard was approved by CENELEC on 2006-06-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regula
9、tions 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 CENELEC member. This
10、 European Standard exists in two official versions (English and 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 versions. CENELEC members are th
11、e national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, S
12、witzerland and the United Kingdom. EN 62333-2:2006+A1December 2015EN 62333-2:2006 2 Foreword The text of document 51/853/FDIS, future edition 1 of IEC 62333-2, prepared by IEC TC 51, Magnetic components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC
13、 as EN 62333-2 on 2006-06-01. This Standard is to be used in conjunction with EN 62333-1. 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) 2007-03-01 latest date by which the n
14、ational standards conflicting with the EN have to be withdrawn (dow) 2009-06-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62333-2:2006 was approved by CENELEC as a European Standard without any modification. _ EN 62333-2:2006/A1:2015 2 Europe
15、an foreword The text of document 51/1068/CDV, future IEC 62333-2:2006/A1, prepared by IEC/TC 51 “Magnetic components and ferrite materials“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62333-2:2006/A1:2015. The following dates are fixed: latest date by which the docum
16、ent has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2016-06-09 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-09-09 Attention is drawn to the possibility that some of the eleme
17、nts of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62333-2:2006/A1:2015 was approved by CENELEC as a European Standard without any modi
18、fication. Foreword to amendment A1EN 62333-2:2006 22 Annex ZA (normative) 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 editio
19、n cited applies. For undated references, the latest edition of the 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 IEC 62333-1 -
20、1)Noise suppression sheet for digital devices and equipment Part 1: Terms and definitions EN 62333-1 20062)CISPR 16-1 Series Specification for radio disturbance and immunity measuring apparatus and methods Part 1: Radio disturbance and immunity measuring apparatus EN 55016-1 Series CISPR 22 (mod) -1
21、)Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement EN 55022 20062)1)Undated reference. 2)Valid edition at date of issue. - 2 -BS EN 62333-2:2006+A1:2015EN 62333-2:2006+A1:2015EN 62333-2:2006 22 Annex ZA (normative) Normative references to intern
22、ational 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 the referenced document (including any am
23、endments) 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 IEC 62333-1 -1)Noise suppression sheet for digital devices and equipment Part 1: Terms and definitions EN 62333-1 200
24、62)CISPR 16-1 Series Specification for radio disturbance and immunity measuring apparatus and methods Part 1: Radio disturbance and immunity measuring apparatus EN 55016-1 Series CISPR 22 (mod) -1)Information technology equipment - Radio disturbance characteristics - Limits and methods of measuremen
25、t EN 55022 20062)1)Undated reference. 2)Valid edition at date of issue. - 3 -BS EN 62333-2:2006+A1:2015EN 62333-2:2006+A1:2015BS EN 62333-2:2006+A1:2015IEC 62333-2:2006+A1:2015 - 4 -CONTENTS1 Scope 52 Normative references 53 General 54 Measuring methods 641 Intra-decoupling ratio: Rda642 Inter-decou
26、pling ratio: Rde 1143 Transmission attenuation power ratio: Rtp1444 Radiation suppression ratio: Rrs1845 Line-decoupling ratio: Rdl18Figure 1 Schematic diagram of a pair of antennas and NSS under test 6Figure 2 A pair of antennas and NSS under test 7Figure 3 Frequency response of coupling between a
27、pair of antennas 7Figure 4 Recommended examples of small loop antennas for the measurement 8Figure 5 Cross sectional view of the measuring configuration 9Figure 6 Schematic diagram of the measuring configuration 10Figure 7 Schematic diagram of a pair of loop antennas and test sample 12Figure 8 Schem
28、atic diagram of a pair of antenna and test sample 12Figure 9 Schematic diagram of the measuring configuration 13Figure 10 Schematic diagram of the measuring method for transmission attenuation power ratio Rtp15Figure 11 Data examples of the measurement results 17Figure 12 Measurement system diagram
29、of Rrs18Figure 13 Schematic diagram of test fixture 18Figure 14 Size and structure of test fixture 19Figure 15 Test sample attachment on test fixture 21Figure 16 Test fixture setup on turntable 21Figure 17 Noise path 23Figure 18 A test fixture for line-decoupling measurement 24Figure 19 Schematic di
30、agram of MSL and loop antenna set-up 24Figure 20 NSS, loop antenna and magnetic flux configuration 25Table 1 Merits and limitations of the recommended antennas 9Table 2 Dimensions of loop antennas9Table 3 Dimensions of test sample 10Table 4 Dimensions of loop antennas13Table 5 Dimensions of test fix
31、ture15Table 6 Dimensions of test sample 16Table 7 Dimensions of test fixture19Table 8 Dimensions of test sample 20Table 9 Noise suppression effect classified as noise path and NSS position 23Table 10 Dimensions of the MSL 25Table 11 Dimensions of loop antenna 25Table 12 Dimensions of the test sample
32、 26EN 62333-2:2006 4 NOISE SUPPRESSION SHEET FOR DIGITAL DEVICES AND EQUIPMENT Part 2: Measuring methods 1 Scope This part of IEC 62333 specifies the methods for measuring the electromagnetic characteristics of a noise suppression sheet. Those methods are intended to provide useful and repeatable me
33、asurements to characterize the performance of the noise suppression sheets, so that manufacturers and their customers are able to obtain the same results. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the
34、edition cited applies. For undated references, the latest edition of the referenced document (including any amendment) applies. IEC 62333-1, Noise suppression sheet for digital devices and equipment Part 1: Definitions and general properties CISPR 16-1, Specification for radio disturbance and immuni
35、ty measuring apparatus and methods Part 1: Radio disturbance and immunity measuring apparatus CISPR 22, Information technology equipment Radio disturbance characteristics Limits and methods of measurement 3 General Electromagnetic interference between electronic devices, and emission of radiation fr
36、om electronic devices are caused, in part, by RF current generated by active devices which are driven at high frequency. Printed-circuit board (PCB), devices mounted on the PCB, and all other connected circuits or cables can act as antennas to radiate the RF noise. Levels of the electromagnetic inte
37、rference and the emission are proportional to the RF current, and are also affected significantly by PCB design, radiation efficiency of the antennas, and noise coupling coefficients between the devices and the antennas. The noise suppression sheet (NSS) is used for decoupling of the noise path, suppressing RF noise current, and reducing radiation. The noise suppression effect of the NSS can be evaluated by four parameters. They are defined as intra-decoupling ratio (Rda), inter-decoupling ratio (Rde), transmission attenuation power rati
