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optimus sound level meter user manual
Page 25
For more information, please see Technical Note 32 - Tonal noise detection with
the optimus sound level meters available for download from the Cirrus Research
website at www.cirrusresearch.co.uk/library/optimus .
Ln View
The Ln view shows the statistical Ln values calculated during the measurement. The
first seven Ln values are set by default to commonly used values and 8-14 are
definable in NoiseTools.
Some
optimus
models have a second set which are also 1-7 default, 8-14 user
definable.
The source data type for the second Ln set is also configurable in NoiseTools.
Dose View
The Dose View gives you a number of different functions depending upon the
configuration of the Quick Settings.
For the UK option, this View gives you Leq, LEP,d, % Dose and Estimated Dose along
with the Projected Exposure Calculator.
For the EU option, this View gives you Leq, LEX,8, % Dose and Estimated Dose along
with the Projected Exposure Calculator.
For all other options the Lavg, TWA, % Dose and Estimated % Dose for two integrators,
in addition to ISO (EU), will be shown according to the setting you have chosen.
Two custom integrators can also be used, configured in NoiseTools. When chosen,
they will be shown in addition to ISO (EU).
Moving Average View
The Moving Average View is available on the CR:191BE & CR:193BE instruments only.
The Moving Average View shows a 15 minute and 60 minute moving average LAeq
along with LASmax and LA95 values.
The LAeq values are highlighted in colours under certain conditions. See page 25 for
details of the trigger levels.
High Level Noise Measurement
The
optimus
sound level meters can be used to measure high noise levels (up to
170dB) with the use of the optional MV:200EH High Level Noise Measurement Option.