General-tools-and-instruments DSM8921 Manual de usuario Pagina 9

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4 Press the REC key again. MAX will
appear on the bottom of the screen
and the maximum sound level
measurement will be displayed.
The unit is not recording at this
time,but the bar graph will continue
to show the current reading.
5 Press the REC key again to resume
recording and repeat the process.
6 Press and hold the REC key until
the REC indicator disappears to
exit recording mode.
Fig.8
40
SPL
+10
USING THE BACKGROUND NOISE
ABSORBER
This feature allows you to measure
equipment noise accurately, even in
the presence of high background
noise.
1 Press the ON/OFF key to turn the
meter on.
2 Press the MAXHLD key. MAX HOLD
will be displayed.(See Fig.5)
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