TM-102
EN-7
5. The 94 dB calibration process can be repeated until the
meter reads 94.0 dB. Recalibration cycle：1 year.
4. 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, the mark
appears. If it appears, battery should be replaced
with new one.
5. OPERATING PRECAUTIONS
1. Wind blowing across the microphone would bring
additional extraneous noise. Once using the
instrument in the presence of wind, it is necessary
to mount the windscreen preventing to pick up
undesirable signals.
2. Calibrate the instrument before operation if the
instrument was not in use for a long time or
operation at 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 it is not in use.
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