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.
WITHDRAWN
IEC 60651:1979 ED1
99.60
Withdrawal effective
Apr 17, 2003
WITHDRAWN
IEC 60651:1979/AMD1:1993 ED1
WITHDRAWN
IEC 60651:1979/AMD2:2000 ED1