LxT Manual
Overall Tab
5-17
Exceedances
Exceedances occur when the instantaneous sound levels are
greater than set trigger levels. The
Exceedances
page shows
the number of exceedances that have occurred during the
measurement and the total duration of exceedances.
Exceedances are shown for two threshold levels of the RMS
detector and three for the peak detector, as shown in Figure
5-19.
The exceedances count and time
shown on this page, as well as those
exported in data files, are computed
according to your current weighting
and detector settings. An exceedance
begins when the measured level is
greater than the specified threshold
and ends when the level is less than
or equal to -2 dB of the measured
threshold. This prevents excessive
exceedance counts when the
measured level is at or near the
threshold.
FIGURE 5-19 Overall Tab, Exceedances Page
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