IEC 60804:2000

FOREWORD
1 Scope
      1.1 General
      1.2 Types
      1.3 Characteristics specified
      1.4 Tolerances
      1.5 Test specified
      1.6 Normative references
2 Object and general requirements
      2.1 Object
      2.2 Applications
      2.3 General requirements
      2.4 Method of use
3 Definitions
4 General characteristics
5 Frequency weighting and amplifier characteristics
6 Averaging and indicator characteristics
7 Overload indication
8 Sensitivity to various environments
9 Calibration and verification of the basic
      characteristics
      9.1 Introduction
      9.2 Overall instrument characteristics
      9.3 Amplifier and indicator characteristics
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
Annex A (informative) Difference between averaging capability
                      of integrating and conventional sound
                      level meters
Annex B (normative) Additional specifications for integrating
                    sound level meters indicating the average
                    AI-weighted sound pressure level
Annex C (informative) Use of free-field and diffuse-field
                      microphones
Annex D (informative) Emission limits

Describes instruments for the measurement of frequency weighted and time averaged sound-pressure levels. Ensures specified accuracy and stability of an integrating sound level meter and reduces to the practical minimum any differences in equivalent measurements taken with instruments of various makes and models which satisfy the requirements of this standard. Specifies the following characteristics and test methods for integrating sound-level meters: a)integrating and averaging characteristics; b)indicator characteristics; c)overload sensing and indicating characteristics.