1
Outline
This unit is a sound level meter that complies with the Japan
measurement law, JIS, and IEC. The microphone is a 1/2-inch
electret condenser (UC-52). It has a wide 107-dB linearity range,
measuring sound levels between 30 and 137 dB, with no need
to select the range. The unit has an LCD panel, operation keys,
an AC monitor output connector and a DC out connector. It is
able to measure the following items.
• Sound level
L
p
• Equivalent continuous sound level
L
eq
• Maximum sound level
L
max
• Sound exposure level
L
E
• C weighted peak sound level
L
Cpeak
It is powered by two size AAA(IEC R03, LR03) batteries. The
main unit and preamplifier are a single unit so it is not possible
to extend the microphone.
This unit has the following two level ranges.
Wide range: This measures the range between 30 and 137 dB
and allows simultaneous measurement of
L
p
,
L
eq
,
L
max
, and
L
E
.
Peak range: Along with the processing results for wide range,
this range also measures
L
Cpeak
, but the lower limit
for measurement becomes 65 dB.
Resume function
This function maintains the settings that have been configured
before power-off.
The following items are maintained:
• Measurement time
• Time weighting characteristics
• Level range
• Address indication
The following items have predefined settings upon startup.
• Frequency weighting characteristic
A
• Display processing value type
L
p
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