11
Controls
The effect of brief sound peaks is mini-
mized in the 
SLOW
 position.
WEIGHTING 
Set
WEIGHTING
 to weight the sound mea-
surement for a particular frequency range.
When set to 
A
, the meter primarily mea-
sures frequencies in the 500–10,000 Hz
range, which is the area of greatest sensi-
tivity to the human ear. When set to 
C
, the
meter measures uniformly over the fre-
quency range from 32–10,000 Hz, giving
an indication of the overall sound level.
Typical A- and C-weighted response curves 
(A-weighted with random-incidence)
33-2050.fm  Page 11  Monday, April 17, 2000  2:04 PM