IEC 60651:1979+AMD1:1993+AMD2:2000 CSV

FOREWORD
1 Scope
   1.1 General
   1.2 Types
   1.3 Tolerances
   1.4 Characteristics specified
   1.5 Tests specified
2 Object and general requirements
   2.1 Object
   2.2 Applications
   2.3 Weighting characteristics
   2.4 Optional features
   2.5 Method of use
3 Definitions
4 General characteristics
5 Directional characteristics of the microphone and
   instrument case
6 Frequency
7 Detector and indicator characteristics
8 Sensitivity to various environments
9 Calibration and verification of the basic
   characteristics of the sound level meter
10 Provision for use with auxiliary equipment
11 Rating information and instruction manual
12 Electromagnetic and electrostatic compatibility
   requirements and test procedures
   12.1 Field of application
   12.2 Emission limits
   12.3 Electrostatic discharges
   12.4 Immunity to power- and radio-frequency fields
        and conducted disturbances
   12.5 Test procedures
Appendix A Tests of the overload and detection
           characteristics
Appendix B Diffuse field sensitivity
Appendix C Theoretical response to tone bursts
Appendix D (normative) Equations for design-goal
           frequency weightings
Appendix E (informative) Emission limits
Figures

Deals with sound level meters of four degrees of precision, designated Types 0, 1, 2 and 3. Specifies the following characteristics: directional characteristics, frequency weighting characteristics, time-weighting, detector and indicator characteristics, sensitivity to various environments. Establishes electrical and acoustical tests to verify compliance with characteristics specified and describes the method for absolute sensitivity calibration. This standard supersedes IEC 60123 and IEC 60179.