12
Using
The sound to be measured must be at least 10 dB louder than
the background noise level or it can not be interpreted well.
Do not expose the meter to strong magnetic fields or static
charges. This will affect the performance of the meter.
Measuring Characteristic (WEIGHTING)
Use the WEIGHTING switch to weight the sound measurement for a
particular frequency range:
When set to
A
, the meter, primarily measures frequencies in the
500 – 10000 Hz range which is the area of greatest sensitivity to
the human ear. This setting can be used to rate environment
noises on various locations of a certain monitored area.
When set to
C
, the meter measures uniformly over the frequency
range from 32 – 10000 Hz, giving an indication of the overall
sound level. This setting can be used for setting up PA systems
or other audio equipment for example.
Use the WEIGHTING switch (7) to setup the desired measuring
characteristic.
Response Time (RESPONSE)
The response switch (3) has two settings:
FAST
and
SLOW
. In the
FAST
position, the meter reacts quickly to changes in the sound
level, indicating peak sound levels present in the environment. In
the
SLOW
position, the meter is damped and indicates an average
value sound level. The effect of brief sound peaks is minimized in
this position.
Example: Setting up Audio Sound System
Analyze the room’s acoustics with your meter and a suitable test
recording (CD or tone generator). The test recording should produce
pure tones, one at a time, at intervals spanning the audio spectrum.
Make a graph or table showing the sound levels generated by the
individual tones. This gives you a clear idea of the frequency