1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Electroacoustics Sound calibrators (IEC 60942:2017)BS EN IEC 60942:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 60942 March 2018 ICS 17.140.50; 33.100.20 Supersedes EN 60942:2003 English Version Electroa
2、coustics - Sound calibrators (IEC 60942:2017) lectroacoustique - Calibreurs acoustiques (IEC 60942:2017) Elektroakustik - Schallkalibratoren (IEC 60942:2017) This European Standard was approved by CENELEC on 2018-01-03. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations wh
3、ich 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 CEN-CENELEC Management Centre or to any CENELEC member. Th
4、is 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN
5、ELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherl
6、ands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Managem
7、ent Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 60942:2018 E National forewordThis British Standard is the UK implementation of EN IEC 60942:2018. It is identical to IEC 609
8、42:2017. It supersedes BS EN 60942:2003, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EPL/29, Electroacoustics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to inc
9、lude all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 90820 0ICS 33.100.20; 17.140.50Compliance with a British Standard cannot confer immunity from legal obligat
10、ions.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN IEC 60942:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 60942 March 2018 I
11、CS 17.140.50; 33.100.20 Supersedes EN 60942:2003 English Version Electroacoustics - Sound calibrators (IEC 60942:2017) lectroacoustique - Calibreurs acoustiques (IEC 60942:2017) Elektroakustik - Schallkalibratoren (IEC 60942:2017) This European Standard was approved by CENELEC on 2018-01-03. CENELEC
12、 members are bound to comply with the CEN/CENELEC 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 appl
13、ication to the CEN-CENELEC Management Centre or to any CENELEC 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 CEN-CE
14、NELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, I
15、celand, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechn
16、ique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 60942:2018 E BS EN IEC 60942:2018EN IEC 60942:2018 (
17、E) 2 European foreword The text of document 29/962/FDIS, future edition 4 of IEC 60942, prepared by IEC/TC 29 “Electroacoustics“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 60942:2018. The following dates are fixed: latest date by which the document has to be imp
18、lemented at national level by publication of an identical national standard or by endorsement (dop) 2018-10-03 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2021-01-03 This document supersedes EN 60942:2003. Attention is drawn to the possibility
19、 that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60942:2017 was approved by CENELEC as a European Standard without any mo
20、dification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60942:2003 NOTE Harmonized as EN 60942:2003 (not modified). IEC 61094-2:2009 NOTE Harmonized as EN 61094-2:2009 (not modified). BS EN IEC 60942:2018EN IEC 60942:2018 (E) 3 Ann
21、ex ZA (normative) Normative references to international publications with their corresponding European publications The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition ci
22、ted applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest vers
23、ions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60050-801 1994 International Electrotechnical Vocabulary (IEV) - Chapter 801: Acoustics and electroacoustics - - IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) - Part
24、4-2: Testing and measurement techniques - Electrostatic discharge immunity test EN 61000-4-2 2009 IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test EN 61000-4-3 2006 IEC 61000-4-20 20
25、10 Electromagnetic compatibility (EMC) - Part 4-20: Testing and measurement techniques - Emission and immunity testing in transverse electromagnetic (TEM) waveguides EN 61000-4-20 2010 IEC 61000-6-1 2005 Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for residential, co
26、mmercial and light-industrial environments EN 61000-6-1 2007 IEC 61000-6-2 2005 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity for industrial environments EN 61000-6-2 2005 - - + corrigendum Sep. 2005 IEC 61000-6-3 2006 Electromagnetic compatibility (EMC) - Part 6-3: Ge
27、neric standards - Emission standard for residential, commercial and light-industrial environments EN 61000-6-3 2007 + A1 2010 + A1 2011 - - + AC 2012 IEC 61094-1 2000 Measurement microphones - Part 1: Specifications for laboratory standard microphones EN 61094-1 2000 IEC 61094-4 1995 Measurement mic
28、rophones - Part 4: Specifications for working standard microphones EN 61094-4 1995 BS EN IEC 60942:2018EN IEC 60942:2018 (E) 4 IEC 61094-5 - Measurement microphones - Part 5: Methods for pressure calibration of working standard microphones by comparison EN 61094-5 - IEC 61672-1 - Electroacoustics -
29、Sound level meters - Part 1: Specifications EN 61672-1 - CISPR 16-1-1 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus EN 55016-1-1 - CISPR 16-2-3 2016 Specification for radio distu
30、rbance and immunity measuring apparatus and methods - Part 2-3: Methods of measurement of disturbances and immunity - Radiated disturbance measurements EN 55016-2-3 2017 CISPR 22 2008 Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement EN 55022 20
31、10 ISO/IEC Guide 98-3 2008 Uncertainty of measurement - Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) - - ISO 266 1997 Acoustics - Preferred frequencies EN ISO 266 1997 ISO/IEC Guide 99 - International vocabulary of metrology - Basic and general concepts and associated ter
32、ms (VIM) - - BS EN IEC 60942:2018 2 IEC 60942:2017 IEC 2017 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope 8 2 Normative references 8 3 Terms and definitions 10 4 Reference environmental conditions 12 5 Requirements 12 5.1 General . 12 5.2 Adaptors . 14 5.3 Sound pressure level 15 5.3.1 General . 15
33、 5.3.2 Generated sound pressure level 15 5.3.3 Short-term level fluctuation 15 5.3.4 Sound pressure level over range of supply voltage 16 5.4 Frequency . 16 5.4.1 General . 16 5.4.2 Frequency of sound generated by the sound calibrator 16 5.5 Influence of static pressure, air temperature and humidity
34、 . 17 5.6 Total distortion + noise . 18 5.7 Power supply requirements . 19 5.8 Specification and calibration of microphones . 19 5.8.1 Microphone models and adaptors 19 5.8.2 Microphone sensitivity level . 19 5.9 Electromagnetic compatibility 20 5.9.1 General . 20 5.9.2 Radio-frequency emissions 20
35、5.9.3 Electrostatic discharges . 20 5.9.4 Immunity to power- and radio-frequency fields . 20 6 Instrument marking and documentation . 21 6.1 Marking of the sound calibrator . 21 6.2 Individual calibration chart for a class LS sound calibrator 22 6.3 Instruction manual 22 Annex A (normative) Pattern
36、evaluation tests . 24 A.1 General . 24 A.2 Submission for test . 24 A.3 Principal values 25 A.4 Marking of the sound calibrator and supplied documentation 25 A.5 Performance tests at and around reference environmental conditions . 25 A.5.1 General . 25 A.5.2 Orientation . 25 A.5.3 Ambient noise 25 A
37、5.4 Microphone specification . 26 A.5.5 Sound pressure level . 26 A.5.6 Sound pressure level stability Short-term level fluctuation 27 A.5.7 Frequency . 28 BS EN IEC 60942:2018IEC 60942:2017 IEC 2017 3 A.5.8 Total distortion + noise 29 A.6 Environmental tests 30 A.6.1 General . 30 A.6.2 Influence o
38、f static pressure 30 A.6.3 Acclimatization requirements for tests of the influence of variations in air temperature and relative humidity . 32 A.6.4 Abbreviated test of influence of air temperature and humidity combined 32 A.6.5 Influence of air temperature . 35 A.6.6 Influence of relative humidity
39、 36 A.6.7 Influence of air temperature and humidity combined 37 A.7 Electromagnetic compatibility 38 A.7.1 General . 38 A.7.2 Radio-frequency emissions 38 A.7.3 Electrostatic discharges . 39 A.7.4 Immunity to power- and radio-frequency fields . 40 Annex B (normative) Periodic tests 42 B.1 General .
40、 42 B.2 Submission for test . 43 B.3 Preliminary inspection . 43 B.4 Performance tests . 43 B.4.1 Orientation . 43 B.4.2 Ambient noise 43 B.4.3 Environmental conditions . 43 B.4.4 Additional equipment . 43 B.4.5 Microphone specification . 44 B.4.6 Sound pressure level . 44 B.4.7 Frequency . 45 B.4.8
41、 Total distortion + noise 45 B.5 Calibration of the sound calibrator with other models of microphone . 46 B.6 Documentation 46 Annex C (normative) Pattern evaluation report . 48 C.1 General . 48 C.2 Marking . 48 C.3 Submission for test . 48 C.4 Pattern evaluation report content 48 Annex D (informati
42、ve) Relationship between tolerance interval, corresponding acceptance interval and the maximum-permitted uncertainty of measurement . 50 Annex E (informative) Example assessments of conformance to specifications of this document 51 E.1 General . 51 E.2 Conformance criteria . 51 E.3 Example test resu
43、lts . 51 Bibliography 54 Figure D.1 Relationship between tolerance interval, corresponding acceptance interval and the maximum-permitted uncertainty of measurement . 50 Figure E.1 Examples of assessment of conformance . 53 BS EN IEC 60942:2018 4 IEC 60942:2017 IEC 2017 Table 1 Sound calibrator class
44、es and designations 13 Table 2 Acceptance limits for sound pressure level and short-term level fluctuation, at and around reference environmental conditions 16 Table 3 Acceptance limits for the effect of supply voltage on sound pressure level, under reference environmental conditions . 16 Table 4 Ac
45、ceptance limits for frequency, at and around reference environmental conditions . 17 Table 5 Acceptance limits for sound pressure level, over the specified range of environmental conditions 18 Table 6 Acceptance limits for frequency, over the specified range of environmental conditions . 18 Table 7
46、Maximum total distortion + noise . 19 Table A.1 Maximum-permitted uncertainty of measurement for a coverage probability of 95 %, for sound pressure level and short-term level fluctuation at and around reference environmental conditions . 28 Table A.2 Maximum-permitted uncertainty of measurement for
47、a coverage probability of 95 % for frequency, at and around reference environmental conditions . 29 Table A.3 Maximum-permitted uncertainty of measurement for a coverage probability of 95 % for total distortion + noise, over the appropriate range of environmental conditions . 30 Table A.4 Maximum-pe
48、rmitted uncertainty of measurement for a coverage probability of 95 %, for sound pressure level, over the specified range of environmental conditions . 32 Table A.5 Maximum-permitted uncertainty of measurement for a coverage probability of 95 % for frequency, over the specified range of environmenta
49、l conditions . 35 Table E.1 Examples of assessment of conformance . 52 BS EN IEC 60942:2018IEC 60942:2017 IEC 2017 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROACOUSTICS SOUND CALIBRATORS FOREWORD 1) The International 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
