4. MEASURING PROCEDURE
1)Slide the " Power ON/OFF/Hold switch " ( 3-6, Fig. 1 ) to
the " 1 " position will power on the meter.
" 1 " = Power ON. " 0 " = Power OFF.
2)Determine proper measuring range by selecting the
" Range switch " ( 3-4, Fig. 1 ) to minimize the tolerance of
readout. When left corner of LCD show " "
( Range upper / lower indicator, 3-3, Fig. 1 ), it shows
the dB range selection is upper or lower setting. Slide
range switch to other range for measuring.
3)Hold the instrument in hand and point the microphone at
measured noise source, the sound level will be displayed
on " dB " ( decibel) unit.
4)During the measurement, if slide the " Power
ON/OFF/Hold switch " ( 3-6, Fig. 1 ) to the " Hold "
position will freeze the display value. If slide the
" Power ON/OFF/Hold switch " ( 3-6, Fig. 1 ) to the " 1 "
position. then the display will make the measurement
continually.
5. REPLACEMENT OF BATTERY
1)When the left corner of LCD display show " BAT ",
it indicate a normal battery output of less than
6.5 V - 7.5 V. It is necessary to replace the battery.
However, in-spec. measurement may still be made for
several hours after LOW BATTERY INDICATOR
appears before the instrument become inaccurate.
2)Slide the Battery Cover ( 3-7, Fig. 1 ) & take the battery
away from the battery compartment..
3)Replace with 9V battery ( Alkaline or Heavy duty type,
006 P, MN1604/PP3 or equivalent ) and reinstate the cover.
4
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