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Specifications
Impulse sound level L
AI
Impulse equivalent continuous sound level L
AIeq
L
Atm5
, L
AI
, and L
AIeq
can only be chosen when A weight-
ing is selected for main processing.
L
Ceq
can only be chosen when A weighting or FLAT is
selected for main processing.
Measurement time
10 seconds, 1, 5, 10, 15, 30 minutes, 1, 8, 24 hours, and manual (maximum
200 hours)
Measurement range
A weighting: 28 dB to 138 dB
C weighting: 33 dB to 138 dB
FLAT: 38 dB to 138 dB
C-weighted peak sound level: 55 dB to 141 dB
Peak sound level (FLAT): 60 dB to 141 dB
Noise floor NL-21 NL-31
A weighting: 22 dB or less 20 dB or less
(19 dB Typ.) (17 dB Typ.)
C weighting: 27 dB or less 25 dB or less
Flat: 32 dB or less 30 dB or less
Linearity range 100 dB
Reference sound pressure level 94 dB
Reference level range 30 to 120 dB
Level range selection
6 ranges in 10-dB steps
20 to 80 dB
20 to 90 dB
20 to 100 dB
20 to 110 dB
30 to 120 dB
40 to 130 dB
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