IEC 60942:2017
Current
The latest, up-to-date edition.
Electroacoustics - Sound calibrators
Hardcopy , PDF
English - French, Spanish, Castilian
29-11-2017
IEC 60942:2017 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. This fourth edition cancels and replaces the third edition published in 2003, of which it constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) deletion of the class designations, class LS/C, class 1/C and class 2/C;
b) addition of two further class designations, class LS/M and class 1/M, specifically for pistonphones;
c) addition of an amended criterion for assessing conformance to a specification: conformance is now demonstrated when (a) measured deviations from design goals do not exceed the applicable acceptance limits and (b) the uncertainty of measurement does not exceed the corresponding maximum-permitted uncertainty;
d) modification to the short-term level fluctuation test of the sound pressure level stability;
e) change to some environmental test conditions to avoid icing;
f) addition of an alternative test for immunity to radio-frequency fields using transverse electromagnetic (TEM) waveguides.
| Committee |
TC 29
|
| DevelopmentNote |
Stability Date: 2020. (11/2017)
|
| DocumentType |
Standard
|
| Pages |
112
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| CEI EN IEC 60942 : 2018 | Identical |
| IS 15059 : 2023 | Identical |
| IS 15059 : 2018 | Identical |
| PN-EN IEC 60942:2018-06 | Identical |
| OVE EN IEC 60942: 2020 03 01 | Identical |
| DIN EN IEC 60942:2018-07 | Identical |
| JIS C 1515:2020 | Identical |
| BS EN 60974-12:2011 | Identical |
| UNE-EN IEC 60942:2019 | Identical |
| BS EN IEC 60942:2018 | Identical |
| UNE-EN IEC 60942:2018 | Identical |
| SAE J1470_202308 | Measurement of Noise Emitted by Accelerating Highway Vehicles |
| AASHTO T 360 : 2016 | METHOD OF TEST FOR MEASUREMENT OF TIRE/PAVEMENT NOISE USING THE ON-BOARD SOUND INTENSITY (OBSI) METHOD |
| AASHTO TP 99:2018 | Standard Method of Test for Determining the Influence of Road Surfaces on Traffic Noise Using the Continuous-Flow Traffic Time-Integrated Method (CTIM), Single User PDF Download |
| AASHTO TP 98 : 2018 | Standard Method of Test for Determining the Influence of Road Surfaces on Vehicle Noise Using the Statistical Isolated Pass-By (SIP) Method |
| IEC 61094-5:2016 | Electroacoustics - Measurement microphones - Part 5: Methods for pressure calibration of working standard microphones by comparison |
| AS 5337:2019 | Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane |
| IEC 61000-6-2:2016 | Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity standard for industrial environments |
| OIML R 97 : 1990 | BAROMETERS |
| IEC 61094-4:1995 | Measurement microphones - Part 4: Specifications for working standard microphones |
| CISPR 16-1-1:2015 | Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus |
| ISO 266:1997 | Acoustics — Preferred frequencies |
| AS 5336:2019 | Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for anechoic rooms and hemi - anechoic rooms |
| IEC 61094-1:2000 | Measurement microphones - Part 1: Specifications for laboratory standard microphones |
| AS 5335:2019 | Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane |
| ISO/IEC Guide 98-4:2012 | Uncertainty of measurement — Part 4: Role of measurement uncertainty in conformity assessment |
| AS/NZS IEC 61672.1:2019 | Electroacoustics - Sound level meters Specifications |
| IEC 60050-801:1994 | International Electrotechnical Vocabulary (IEV) - Part 801: Acoustics and electroacoustics |
| CISPR 22:2008 | Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement |
| ISO/IEC Guide 99:2007 | International vocabulary of metrology — Basic and general concepts and associated terms (VIM) |
| IEC 61000-6-3:2006+AMD1:2010 CSV | Electromagnetic compatibility (EMC) - Part 6-3: Generic standards - Emission standard for residential, commercial and light-industrial environments |
| IEC 61000-4-20:2010 | Electromagnetic compatibility (EMC) - Part 4-20: Testing and measurement techniques - Emission and immunity testing in transverse electromagnetic (TEM) waveguides |
| IEC 61000-4-2:2008 | Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test |
| IEC 61000-4-3:2006+AMD1:2007+AMD2:2010 CSV | Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test |
| CISPR 16-2-3:2016 | Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-3: Methods of measurement of disturbances and immunity - Radiated disturbance measurements |
| IEC 61000-6-1:2016 | Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity standard for residential, commercial and light-industrial environments |
| IEC 61094-2:2009 | Electroacoustics - Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique |
| AS/NZS IEC 61672.3:2019 | Electroacoustics - Sound level meters Periodic tests |
| AS 5333.2:2019 | Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for small, movable sources in reverberant fields Methods for special reverberation test rooms |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
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