Valcom V9992, Инструкция по эксплуатации

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SOUND LEVEL METER
8
VIII. Measurement
(1) Open battery cover and install a 9V battery in the battery compartment.
(2) Turn power ON and select the desired response time and weighting. If the
sound source consists of short bursts or only catching sound peak, set
response to FAST. To measure average sound level, use the slow setting.
Select A-weighting for general noise sound level and C-weighting for
measuring sound level of acoustic material.
(3) Select desired level.
(4) Hold the instrument comfortably in hand and point the microphone at the
suspected noise source, the sound pressure level will be displayed.
(5) When MAX/MIN (maximum, minimum hold) mode is chosen, the instrument
captures and holds the maximum and minimum noise level for a long period
using any of the time weightings and ranges. Press the MAX/MIN button 2
seconds to clear the MAX/MIN reading. “MAX/MIN” symbol disappears.
(6) Turn OFF the instrument.