Larson Davis SoundAdvisor 831C Reference Manual page 50

4.4.3 L
eq
FIGURE 4-11 Overall Tab: Leq Page
L and the L
Aeq AS
measurement
The L (Z frequency
Zpeak
weighting) is the overall
reading of the peak
detector during the
measurement.
This run time stops
during a pause or stop.
4.4.4 Octave Band Analyzer
The octave band
TAKE NOTE
pages are shown because the
831C-OB3 has been
purchased, and on a setup
OBA page, the Bandwidth is
turned ON.
To learn more
LEARN MORE
about the octave band pages,
see "Octave Band Analyzer"
on page 4-4.
SoundAdvisor Model 831C
of the overall
L
Zpeak(max)
The highest level the peak detector has measured during the run time
of the measurement. A date and time of occurrence is recorded with
this event. It's considered the peak hold.
L
ASmax
The highest level the SPL detector has measured during the run time of
the measurement. It's considered the max hold.
L
ASmin
The lowest level the SPL detector has measured during the run time of
the measurement. A date and time of occurrence is recorded with this
event.
There are four pages that relate to octave bands. The bands on the 1/1
Octave pages represent the bandwidth of one full octave, and the
height of each band is the frequency at which that sound is at that
particular octave. The 1/3 Octave band pages are similar, but each
band represents a bandwidth of 1/3 octave.
The Overall Tab's octave band pages only show the data since the first
run was initiated and clear after a reset. The numerical values are color
coded to assist in determining where the numerical values are in each
octave band. For example, the blue box next to the L
that the blue bands are the same data.
Overall Displays
These three SPL
detectors give the date
and time during the
measurement that the
data indicates
Aeq
4-9