Electroacoustics. Sound calibrators Ingestion-build-48183 It also covers the requirements

It also covers the requirements for the connectors and stiffeners

BS EN 61146-3 defines test patterns and measurement conditions so as to enable the comparison of the results of measurements

explains how to meet the recommendations and outlines terminology for electrical equipment safety

It is not applicable to mounting devices for cutting-off wheels

Electroacoustics. Sound calibrators Ingestion-build-48183 It also covers the requirements1 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