Instruction manual

120
Speci cations
Additional processing
One of the following measurements can also be selected
for simultaneous processing with main processing.
Equivalent continuous C-weighted sound level
L
Ceq
C-weighted peak sound level L
Cpeak
Z-weighted peak sound level L
Zpeak
Impulse equivalent continuous sound level
L
AIeq
Tact-max A-weighted sound level L
Atm5
The frequency response of additional processing is
associated with that of sub channel. Therefore, either
L
Ceq
or L
Cpeak
(L
Zpeak
) can be selected when the sub
channel has C-weighting (Z-weighting).
Processing period
The processing period can be selected from 10 sec, 1
min, 5 min, 10 min, 15 min, 30 min, 1 h, 8 h, 24 h and
manually selected arbitrary time.
Arbitrary period of time up to 24 h can be set manu-
ally.
For L
N
, 10 seconds or longer measurement time will
be displayed.
Microphone
NL-42 NL-52
Model: UC-52 UC-59
Sensitivity: -33 dB -27 dB
Preampli er
NL-42 NL-52
Model: NH-24 NH-25