LxT Manual Exceedance Counters 16-5
Exceedance Counters
The LxT has three exceedance event counters: two RMS
event counters and three peak event counters. For each
exceedance there is a threshold level, event counter, and
duration.
The thresholds L
XV
or L
Ypeak
are the levels that the
parameter must exceed to increment the counter and
duration. X is RMS frequency weighting, Y is peak
frequency weighting and V is time weighting.
The Count is the number of times each parameter has exceed
the preset level.
The duration is the total accumulated duration of all
exceedances for a specific parameter.
Miscellaneous Parameters
S.E.A.
SEA is a time integration of peak levels that exceed 120 dB.
C minus A
This measurement represents the difference between the C-
weighted and the A-weighted measurements taken
simultaneously.
Impulsivity
The values L
AIeq
, L
Aeq
and L
AIeq
- L
Aeq
are measured and
displayed.
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