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(2) Insert the microphone housing carefully into the
insertion hole of the calibrator.
(3) Turn on the switch of calibrator and adjust the
CAL potentiometer of the unit. The level display
will indicate the desired level. Our products are
all well calibrated before shipment.
Recommended Recalibration cycle：1 year.
Measurement Preparation
(1) Battery Loading
Remove the battery cover on the back and put in
one 9 V Battery.
(2) Battery Replacement When the battery voltage
drops below the operating voltage, mark appears. If
it appears, battery should be replaced with new one.
(3) AC Adapter Connection When the AC adapter is
used, insert the plugs of the adapter into the DC9V
connector on the side panel.
Operating precautions
1. Wind blowing across the microphone would
bring additional extraneous noise. Once using
the instrument in the presence of wind, it is a
must to mount the windscreen to not pick up
undesirable signals.
2. To achieve more accurate measurement, use an
extension cable to separate the Microphone
from the main body so that the effect of
unexpected sound reflection can be eliminated.
3. Calibrate the instrument before operation if the
instrument was not in use for a long time or
operation at bad environment.
4. Do not store or operate the instrument at high
temperature and high humidity environment.
5. Keep microphone dry and avoid severe
vibration.
6. Please take out the battery and keep the
instrument in low humidity environment.
When not in use.
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