Norsonic nor140, Instructional Manual

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Chapter 7
Moving Leq
PS! If you only need to follow one event, ie.
Period 1, just fill in 0 (zero) for in the field for
duration for Period 2.
PS! In case you want to disable the Moving
Leq function altogether, set Period1 to 0
(zero)
PS! Please note that the minimum resolution
is 1 second.
NB! You need have the SLM display first
then press TBL
During the measurement you can follow the build-up of
the values by choosing the tabular display
The displayed values MLeq1 and MLeq2 give you
the Leq over the “moving windows” with the set
duration while the measurement is running, in the
above example 10 seconds and 20 seconds respec-
tively. Please note that these values are not stored as
they only represent the momentary values. Instead it
is the MLeqMax1 and MLeqMax2 that gives you the
maximum value, ie. the period with the highest Leq,
In addition you also have total duration the noise level
was above the set threshold values.
A marker will be inserted in the level vs. time display for
each Period from when the condition is met, ie. the noise
is above the threshold level. This marker can later be
found in the NorReview level vs. time display and further
analysed using the Event Analysis module.