OEG 310737430, Инструкция по эксплуатации

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VI. MEASUREMENT PREPARATION
cover and slide it to the down. Insert two
(2)
drops below the operating voltage, this
UTIONS
will bring additional
(2)
the batteries will
VIII. CALIBRA
d. There are
e it to the down. Slide the switch
(7) Battery Cover
(1) Inserting the batteries
Lightly press the battery
1.5V batteries, paying attention to the polarity as indicated in the
compartment. Replace the cover.
Battery Replacement
When the battery voltage
symbol will appear.
Replace 1.5 Volt batteries.
VII. OPERATION PRECA
(1) Wind blowing across the microphone
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.
Calibrate the instrument before the 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) If the unit is not used for a long period of time,
have to be removed from the battery compartment, since it might
leak.
TION
Before starting a measurement, the unit must be calibrate
two types of calibration: internal electrical calibration and acoustic
calibration using a sound calibrator. Normally, internal electrical
calibration only is required.
Internal Calibrator (94dB @ 1kHz)
Lightly press the battery cover and slid
to the down. Verify that the Cal Mode is set to “Internal” CAL. LCD
shows “CAL” approx. 1 sec. Activates the built-in oscillator (1 kHz, sine
wave) for electrical calibration of the unit. When calibration is end, slide