Larson Davis System 824, Справочное руководство

Страница: 149 / 536

11/8/00 System 824 Views 6-31
The SLM Current -e or TWA display is shown below:
The following explains each of the display’s components:
Display label - This shows the current display (for example,
“SLM Current-e”). The display represents both Current and
Overall -e display.
TWA indicator and level - The indicator is based on the
exchange rate (Leq for 3dB exchange rate and threshold = 0.
TWA for all others) and the Time Weighted Average level.
Sound exposure level - The Sound Exposure Level (SEL) is
measured in dB. This is the TWA normalized to one second.
Elapsed time - This shows the elapsed run time accumu-
lated since the last current/overall reset. This is the time over
which the current TWA is averaged.
Exposure Views
The
u
and
d
arrow keys can be
used to cycle between the Current
SLM, Overall SLM, Exposure, Ln
Centiles, and Stats views.
The Exposure View has three displays which can be
accessed by simply selecting Exposure with the
c
Check
key from within the main View menu then cycling through
the views with the
r
and
l
arrow keys until the desired
display appears.
Exposure Display-a The Exposure-a display consists of seven major compo
nents:
• Display label
Display label
TWA indicator and level
Sound exposure level
Elapsed time