SOUND LEVEL METER
8
(3) AC Adapter Connection
When the AC adapter is used , insert the plugs of the adapter into the
DC9V connector on the side panel.
VIII. OPERATING PRECAUTIONS
(1) Wind blowing across the microphone would bring additional
extraneous noise.
When using the instrument in the presence of wind , it is a must to mount
the windscreen to not pick up undesirable signals.
(2) Calibrate the instrument before operation if the instrument was not in use
for a long time or operated in bad environment.
(3) Do not store or operate the instrument at high temperature and high
humidity environment.
(4) Keep microphone dry and avoid severe vibration.
(5) Please take out the battery and keep the instrument in low humidity
environment. When not in use.
IX. 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 or fix on tripod 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 and remove battery when not in use.
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