VOLTCRAFT SL-300 - Measurement Preparation; Operating Procedure

14
Acoustic Calibrator
REC
FAST
A/C
DC 9V
OUTPUT
CAL
6. MEASUREMENT PREPARATION
 Remove the battery cover on the back
and put in one 9V battery.
 Recover the back cover.
 When battery voltage drops below the
operating voltage or battery aging, this
symbol
will appear on LCD. Replace
the 9V battery.
When the AC adapter is used, insert the
plug of the adapter 3.5φ into the DC
9V connector on the side panel.
7. OPERATING PROCEDURE
1 Power on the meter.
2 Press ‘LEVEL’ button to select desired level,
base on ‘UNDER’ or ‘OVER’ do not appear on
LCD.
3 Select ‘dBA’ for general noise sound level and
‘dBC’ for measuring sound level of acoustic
material.
4 Select ‘FAST’ for instant sound and ‘SLOW’ for
average sound level.
5 Select ‘MAX/MIN’ button for measuring