Front Panel Description
1 Microphone
2
Range switch
3 MAX HOLD switch
4
SLOW FAST switch
5 A/C weighting switch
6
Meter
7 Battery compartment (rear)
8
AC output jack
Operation
Weighting A / C
Slide the Weighting switch to select A or C weighting. Use ‘A’ weighting to
have the meter respond as the human ear would with regard to frequency
response (the human ear boosts and cuts amplitude over the frequency
spectrum therefore it is not ‘flat’ responding). ‘A’ weighting is used for
environmental measurements, OSHA regulatory testing, law enforcement,
and workplace design. Select ‘C’ weighting for a flatter response
measurement (especially for lower frequencies). ‘C’ weighting is suitable
for the sound level analysis of machines, engines, etc.
