Sound Level Meter
9
when the power is turned off the backup battery is recharged by the main
batteries. The clock will keep running for 30 minutes on the backup battery alone.
If the unit is not to be used for an extended period, the main batteries should be
taken out to prevent possible damage due to battery fluid leakage. After
reinserting the batteries, be sure to set the date and time.
8. CALIBRATION PROCEDURES
(1) Press and hold
button and then power
on the meter, LCD display “CAL 94dB” symbol.
(2) Insert the microphone housing carefully into the
insertion hole of the calibrator.
(3) Press ▲(
) or ▼( ) button to increase
or decrease number.
(4) Press button to finish. If you want abort
during a setup process, press power button to
cancel.
※ Our products are all well calibrated before shipment.
Recommended Recalibration cycle: 1 year.
9. MEASUREMENT PREPARATION
(1) Battery Loading:
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