Valcom V9992, Инструкция по эксплуатации

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SOUND LEVEL METER
(1) Make the following switch settings.
Display: dBA
Time Weighting: FAST
Measurement Mode: MAX/MIN Mode function disable
Level Range: 50 to 100 dB
(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.
VI. Measurement Preparation
(1) Battery Loading
Remove the battery cover on the back and put in one 9V 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.
VII. 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 undesired 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.
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