EN IEC 60942:2018
(Main)Electroacoustics - Sound calibrators
Electroacoustics - Sound calibrators
This document specifies the performance requirements for three classes of sound calibrator: class LS (Laboratory Standard), class 1 and class 2. Acceptance limits are smallest for class LS and greatest for class 2 instruments. Class LS sound calibrators are normally used only in the laboratory; class 1 and class 2 are considered as sound calibrators for field use. A class 1 sound calibrator is primarily intended for use with a class 1 sound level meter and a class 2 sound calibrator primarily with a class 2 sound level meter, as specified in IEC 61672-1. The acceptance limits for class LS sound calibrators are based on the use of a laboratory standard microphone, as specified in IEC 61094-1, for demonstrations of conformance to the requirements of this document. The acceptance limits for class 1 and class 2 sound calibrators are based on the use of a working standard microphone, as specified in IEC 61094-4, for demonstrations of conformance to the requirements of this document. To promote consistency of testing of sound calibrators and ease of use, this document contains three normative annexes – Annex A "Pattern evaluation tests", Annex B "Periodic tests", Annex C "Pattern evaluation report", and two informative Annexes – Annex D "Relationship between tolerance interval, corresponding acceptance interval and the maximum-permitted uncertainty of measurement" and Annex E "Example assessments of conformance to specifications of this document". This document does not include requirements for equivalent free-field or random-incidence sound pressure levels, such as can be used in the overall sensitivity adjustment of a sound level meter. A sound calibrator can provide other functions, for exammple, tonebursts. Requirements for these other functions are not included in this document.
Elektroakustik - Schallkalibratoren
Électroacoustique - Calibreurs acoustiques
Le présent document spécifie les exigences de performance de trois classes de calibreurs acoustiques: la classe LS (Laboratory Standard, étalon de laboratoire), la classe 1 et la classe 2. Les limites d'acceptation les plus faibles concernent la classe LS et les plus élevées concernent les appareils de classe 2. Les calibreurs acoustiques de classe LS ne sont normalement utilisés qu'en laboratoire; les appareils de classe 1 et de classe 2 sont considérés comme des calibreurs acoustiques utilisés sur le terrain. Un calibreur de classe 1 est prévu pour être utilisé principalement avec un sonomètre de classe 1 et un calibreur de classe 2 est prévu pour être utilisé principalement avec un sonomètre de classe 2, tel qu'il est spécifié dans l'IEC 61672-1. Les limites d'acceptation concernant les calibreurs de classe LS pour démontrer la conformité avec les exigences du présent document sont basées sur l'utilisation d'un microphone étalon de laboratoire spécifié dans l'IEC 61094-1. Les limites d'acceptation concernant les calibreurs acoustiques de classe 1 et 2 pour démontrer la conformité avec les exigences du présent document sont basées sur l'utilisation d'un microphone étalon de travail spécifié dans l'IEC 61094-4. Par souci d'homogénéité des essais des calibreurs acoustiques et de facilité d'utilisation, le présent document contient trois annexes normatives: l'Annexe A "Essais d'évaluation de modèle", l'Annexe B "Essais périodiques" et l'Annexe C "Rapport d'évaluation de modèle", et deux annexes informatives: l'Annexe D "Relation entre l'intervalle de tolérance, l'intervalle d'acceptation correspondant et l'incertitude de mesure maximale admise" et l'Annexe E "Exemples d'évaluation de conformité avec les spécifications du présent document". Le présent document n'inclut pas les exigences concernant les niveaux de pression acoustique équivalents en champ libre ou en incidence aléatoire, tels qu'ils peuvent être utilisés pour le réglage de la sensibilité globale d'un sonomètre. Un calibreur acoustique peut comporter d'autres fonctions, comme la production de bruits impulsionnels. Le présent document ne comporte pas d'exigences pour ces autres fonctions.
Elektroakustika - Kalibratorji za zvokomere (IEC 60942:2017)
Ta dokument določa zahteve glede delovanja za tri razrede kalibratorja zvoka: razred LS (laboratorijski standard), razred 1 in razred 2. Meje sprejemljivosti so najnižje za instrumente razreda LS in najvišje za instrumente razreda 2. Kalibratorji zvoka razreda LS se običajno uporabljajo le v laboratoriju; kalibratorji razreda 1 in 2 se smatrajo za kalibratorje zvoka za uporabo na terenu. Kalibrator zvoka razreda 1 je primarno namenjen za uporabo z merilnikom zvočne jakosti razreda 1, kalibratorj zvoka razreda 2 pa primarno za merilnik zvočne jakosti razreda 2, kot je opredeljeno v standardu IEC 61672-1.
Meje sprejemljivosti za kalibratorje zvoka razreda LS temeljijo na uporabi laboratorijskih standardnih mikrofonov, kot je opredeljeno v standardu IEC 61094-1, za dokazovanje skladnosti z zahtevami tega dokumenta. Meje sprejemljivosti za kalibratorje zvoka razreda 1 in 2 temeljijo na uporabi delujočih standardnih mikrofonov, kot je opredeljeno v standardu IEC 61094-4, za dokazovanje skladnosti z zahtevami tega dokumenta.
Za spodbujanje doslednosti preskušanja kalibratorjev zvoka in enostavne uporabe ta dokument vsebuje tri normativne dodatke – dodatek A »Preskusi ocenjevanja vzorcev«, dodatek B »Redni preskusi«, dodatek C »Poročilo o ocenjevanju vzorcev« in dva informativna dodatka – dodatek D »Razmerje med intervalom tolerance, ustreznim intervalom sprejemljivosti in največjo dovoljeno negotovost pri merjenju« in dodatek E »Primeri ocen skladnosti s specifikacijami tega dokumenta«.
Ta dokument ne vključuje zahtev za ravni zvočnega tlaka v odprtem prostoru ali ravni naključne pojavnosti, ki se lahko uporabljajo pri splošni nastavitvi občutljivosti merilnika zvočne jakosti.
Kalibrator zvoka lahko zagotovi druge funkcije, na primer, »toneburst«. Zahteve za te druge funkcije niso vključene v ta dokument.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2018
1DGRPHãþD
SIST EN 60942:2004
Elektroakustika - Kalibratorji za zvokomere (IEC 60942:2017)
Electroacoustics - Sound calibrators (IEC 60942:2017)
Ta slovenski standard je istoveten z: EN IEC 60942:2018
ICS:
17.140.50 Elektroakustika Electroacoustics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60942
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2018
ICS 17.140.50; 33.100.20 Supersedes EN 60942:2003
English Version
Electroacoustics - Sound calibrators
(IEC 60942:2017)
Électroacoustique - Calibreurs acoustiques Elektroakustik - Schallkalibratoren
(IEC 60942:2017) (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 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 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-CENELEC 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, Iceland, 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
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für 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
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
The following dates are fixed:
• latest date by which the document has to be (dop) 2018-10-03
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2021-01-03
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60942:2003.
Attention is drawn to the possibility 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 modification.
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).
Annex 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 cited 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 versions 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 EN 61000-4-2 2009
4-2: Testing and measurement techniques
- Electrostatic discharge immunity test
IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) -- Part EN 61000-4-3 2006
4-3: Testing and measurement techniques
- Radiated, radio-frequency,
electromagnetic field immunity test
IEC 61000-4-20 2010 Electromagnetic compatibility (EMC) -- Part EN 61000-4-20 2010
4-20: Testing and measurement
techniques - Emission and immunity
testing in transverse electromagnetic
(TEM) waveguides
IEC 61000-6-1 2005 Electromagnetic compatibility (EMC) -- Part EN 61000-6-1 2007
6-1: Generic standards - Immunity for
residential, commercial and light-industrial
environments
IEC 61000-6-2 2005 Electromagnetic compatibility (EMC) -- Part EN 61000-6-2 2005
6-2: Generic standards - Immunity for
industrial environments
- - + corrigendum Sep. 2005
IEC 61000-6-3 2006 Electromagnetic compatibility (EMC) -- Part EN 61000-6-3 2007
6-3: Generic standards - Emission
standard for residential, commercial and
light-industrial environments
+ A1 2010 + A1 2011
- - + AC 2012
IEC 61094-1 2000 Measurement microphones -- Part 1: EN 61094-1 2000
Specifications for laboratory standard
microphones
IEC 61094-4 1995 Measurement microphones -- Part 4: EN 61094-4 1995
Specifications for working standard
microphones
IEC 61094-5 - Measurement microphones - Part 5: EN 61094-5 -
Methods for pressure calibration of working
standard microphones by comparison
IEC 61672-1 - Electroacoustics - Sound level meters -- EN 61672-1 -
Part 1: Specifications
CISPR 16-1-1 - Specification for radio disturbance and EN 55016-1-1 -
immunity measuring apparatus and
methods -- Part 1-1: Radio disturbance and
immunity measuring apparatus -
Measuring apparatus
CISPR 16-2-3 2016 Specification for radio disturbance and EN 55016-2-3 2017
immunity measuring apparatus and
methods - Part 2-3: Methods of
measurement of disturbances and
immunity - Radiated disturbance
measurements
CISPR 22 2008 Information technology equipment - Radio EN 55022 2010
disturbance characteristics - Limits and
methods of measurement
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 terms (VIM)
IEC 60942 ®
Edition 4.0 2017-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electroacoustics – Sound calibrators
Électroacoustique – Calibreurs acoustiques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.50; 33.100.20 ISBN 978-2-8322-5049-5
– 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
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 . 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
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 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.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
IEC 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 of 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 . 36
A.6.7 Influence of air temperature and humidity combined . 37
A.7 Electromagnetic
...
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