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Level Range Selection (contʼd):
4. If the measuring range is higher than the actual SPL level, the LCD
screen will display the UNDER icon. (For example, if the Level set is 60
to 110 but the actual sound level is lower than 60 dB.)Press the LEVEL
DOWN button to lower the range until the UNDER icon disappears:
5. If the measuring range is lower than the actual SPL level, the LCD screen
will display the OVER icon. (For example, if the Level set is 30 to 80 but
the actual sound level is higher than 80 dB.) Press the LEVEL UP
button to raise the range until the OVER icon disappears:
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