User manual

323
Appendix
Compulsory Calibrated Applications
The following acoustic measurements have been verified by
German PTB during the type approval process:
Instantaneous sound pressure levels:
LAF •
A-weighted sound pressure level with time weighting FAST
LAS •
A-weighted sound pressure level with time weighting SLOW
LCF •
C-weighted sound pressure level with time weighting FAST
LCS •
C-weighted sound pressure level with time weighting SLOW
LZF •
unweighted sound pressure level with time weighting FAST
LZS •
unweighted sound pressure level with time weighting SLOW
LAI •
A-weighted sound pressure level with time weighting
IMPULSE
Time averaged sound pressure levels:
LCpeak •
Peak value of the C-weighted sound pressure level
LAeq •
A-weighted average level
LAE •
A-weighted sound exposure level
LAFT3eq •
A-weighted clock-impulse maximum level with time weight-
ing FAST for a clock-impulse duration of 3 seconds
LAFT5eq •
A-weighted clock-impulse maximum level with time weight-
ing FAST for a clock-impulse duration of 5 seconds