General Tools and Instruments DSM8930 - Manual (Page 6)

SETUP INSTRUCTIONS
INSTALL BATTERY
1. The meter’s battery compartment (Fig. 1, Callout D) is
accessible from the back of the unit near the bottom. Use a
Phillips-head screwdriver to loosen the screw holding the
yellow battery compartment cover in place. Set the cover
and screw aside.
2. Remove the “9V” battery from the blister pack and plug it
into the wired socket inside the compartment. The
terminals of the battery and the socket mate in only one
way, with the smaller male terminal plugging into the larger
female terminal.
3. Replace the battery compartment cover and tighten the
screw to secure it to the housing.
OPERATING INSTRUCTIONS
MAKING BASIC MEASUREMENTS
Press the button to power on the meter. The display will
take a few seconds to stabilize and then begin reading out
real-time sound level measurements.
Note how the digital numbers and the readings on the analog
bar graph track each other. At times, the two displays may
seem slightly out of sync—and they are, because they
refresh at different rates.
Also note how the number above the left end of the bar
graph—the Range Baseline—changes each time a much
louder or softer sound is heard. Each change confirms that
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