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CEI EN IEC 60942

Electroacoustics - Sound calibrators

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Organization: CEI
Publication Date: 1 June 2018
Status: active
Page Count: 64
ICS Code (Electroacoustics): 17.140.50
ICS Code (Immunity): 33.100.20
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.

Document History

CEI EN IEC 60942
June 1, 2018
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...
March 1, 2004
Electroacoustics - Sound calibrators
I calibratori acustici sono apparecchi progettati per produrre uno o più livelli di pressione acustica, in corrispondenza di diverse frequenze se accoppiati a specifici modelli di microfono. Il...
July 1, 2001
Elettroacustica - Calibratori di suono
La presente Norma é annullata e sostituita dalla Nuova edizione, CEI EN 60942:2004-03 (CEI 29-14); tuttavia rimane applicabile fino al 01-04-2006.
April 1, 1999
Elettroacustica - Calibratori acustici
La norma si riferisce ai calibratori acustici di classe 0, normalmente utilizzati nei laboratori, e di classe 1 e 2, normalmente per l'uso sul campo. Vengono utilizzati per la sensibilità alla...

References

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