NBN EN 60942 : 2004

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Reference environmental conditions
5 Requirements
  5.1 General
  5.2 Sound pressure level
  5.3 Frequency
  5.4 Influence of static pressure, air temperature
      and humidity
  5.5 Total distortion
  5.6 Power supply requirements
  5.7 Specification and calibration of microphones
  5.8 Electromagnetic compatibility
6 Instrument marking and documentation
  6.1 Marking of the sound calibrator
  6.2 Individual calibration chart for a class LS
      sound calibrator
  6.3 Instruction manual
Annex A (normative) - Pattern evaluation tests
  A.0 Introduction
  A.1 Submission for test
  A.2 Principal values
  A.3 Marking of the sound calibrator and supplied
      documentation
  A.4 Performance tests at and around reference
      environmental conditions
  A.5 Environmental tests
  A.6 Electromagnetic compatibility
Annex B (normative) - Periodic tests
  B.0 Introduction
  B.1 Submission for test
  B.2 Preliminary inspection
  B.3 Performance tests
  B.4 Calibration of the sound calibrator with other
      models of microphone
  B.5 Documentation
Annex C (normative) - Format for the pattern
        evaluation report
  C.0 Introduction
  C.1 Marking
  C.2 Submission for test
  C.3 Pattern evaluation report
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Defines performance requirements for three classes of sound calibrator - classes 0, 1 and 2 in decreasing order of accuracy under specific conditions.