Revidiran
Specifies the performance requirements for three classes of sound calibrator. Sound calibrators are designed to produce a known effective sound pressure level or levels at a specified frequency or frequencies when coupled to specified models of microphone or specified configurations.
POVUČEN
IEC 60942:1988 ED1
99.60
Povlačenje stupilo na snagu
18. 11. 1997.
POVUČEN
IEC 60942:1997 ED2