Measuring Maximum Sound Levels
1 Turn on the meter by selecting A weighting or LIN
response, and switch the filters OUT.
2 Check the battery voltage and the calibration of the
sound level meter.
3 Select a suitable range so that the maximum expected
sound level would be registered on the meter without
causing it to go off the scale. By trying several ranges
the most suitable will soon be found.
4 Set the response switch to FAST or PEAK.
5 Point the instrument towards the source of the sound to
be measured.
6 Press the MAX button and hold it down until the
transient sound has occurred and the meter has reached
its maximum value. The button must be held until the
reading has been recorded, as once the button is
released the meter returns to normal operation.
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Summary of Contents for GA112
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