IEC 60942:2017
Electroacoustics - Sound calibrators

Standard No.
IEC 60942:2017
Release Date
2017
Published By
International Electrotechnical Commission (IEC)
Latest
IEC 60942:2017
Replace
IEC 29/962/FDIS:2017 IEC 60942:2003
Scope
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 example, tonebursts. Requirements for these other functions are not included in this document.

IEC 60942:2017 Referenced Document

  • CISPR 16-1-1-2015 Spécification des méthodes et des appareils de mesure des perturbations radioélectriques et de l'immunité aux perturbations radioélectriques – Partie 1-1: Appareils de mesure des perturbations radioélectriques et de l’immunité aux perturbations radioélect
  • CISPR 16-2-3-2016 Spécifications des méthodes et des appareils de mesure des perturbations radioélectriques et de l’immunité aux perturbations radioélectriques – Partie 2-3: Méthodes de mesure des perturbations et de l'immunité – Mesurages des perturbations rayonnées (Edit
  • CISPR 22-2008 Information technology equipment – Radio disturbance characteristics – Limits and methods of measurement
  • IEC 60050-801:1994 International Electrotechnical Vocabulary - Chapter 801: Acoustics and electroacoustics
  • 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 measuring techniques - Electrostatic discharge immunity test
  • IEC 61000-4-3:2006 Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
  • IEC 61000-6-1:2005 Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for residential, commercial and light-industrial environments
  • IEC 61000-6-2:2005 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity for industrial environments
  • IEC 61000-6-3:2006 Electromagnetic compatibility (EMC) - Part 6-3: Generic standards - Emission standard for residential, commercial and light-industrial environments
  • IEC 61094-1:2000 Measurement microphones - Part 1: Specifications for laboratory standard microphones
  • IEC 61094-4:1995 Measurement microphones - Part 4: Specifications for working standard microphones
  • IEC 61094-5:2016 Electroacoustics - Measurement microphones - Part 5: Methods for pressure calibration of working standard microphones by comparison
  • IEC 61672-1:2013 Electroacoustics - Sound level meters - Part 1: Specifications
  • ISO 266:1997 Acoustics - Preferred frequencies
  • ISO/IEC GUIDE 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
  • ISO/IEC GUIDE 99:2007 International vocabulary of metrology - Basic and general concepts and associated terms (VIM)

IEC 60942:2017 history

Electroacoustics - Sound calibrators


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