Rion NL-42A, Instruction Manual, Page: 145 / 154

Additional processing
One of the following measurements can also be select-
ed for simultaneous processing with main processing.
C-weighted equivalent continuous sound level
L
Ceq
C-weighted peak sound level
L
Cpeak
Z-weighted peak sound level
L
Z
peak
I-time-weighted equivalent continuous sound level
L
AIeq
Takt-max A-weighted sound level
L
Atm5
Maximum I-time-weighted equivalent continuous
sound level
L
AImax
NX-42EX is required in order to measure
L
AIeq
and
L
AImax
.
The frequency weighting of additional processing is
associated with the frequency weighting of the sub
channel.
Therefore,
L
AIeq
or
L
AImax
can be selected when the
sub channel has A weighting.
L
Ceq
or
L
Cpeak
can be selected when the sub channel
has C weighting,
L
Zpeak
can be selected when the sub
channel has 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 manually.
When Auto store mode is selected, up to 1000 hours
can be set.
Microphone
NL-42A NL-52A
Model: UC-52 UC-59
Sensitivity: −33 dB −27 dB
Preamplifi er
NL-42A NL-52A
Model: NH-24 NH-25
127
Specifi cations