Larson Davis 831C-FFT, Справочное руководство

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SoundAdvisor Model 831C Viewing Event History Data on the Events Tab 131
FIGURE 17-4
Event Indicator
1.
Ready
When this symbol displays, all the pre-samples are
recorded and meter is waiting for an event.
2.
Trigger
When this symbol displays, the sound level exceeds
the Trigger Level.
3.
Valid
When this symbol displays, the sound level exceeds
the Trigger Level for the Minimum Duration.
4.
Continue?
When this symbol displays, the sound level is below
the Trigger Level and is in the Continuation Period
until the event continues or the event ends.
17.3.1 Viewing Octave Band and Spectral Events
You can view the resulting events during a measurement in progress on the Live View
 Events
tab on pages 3–6, or after the measurement from the Measurement
 Events
tab
on pages 3–4. If you enabled Spectral Mode in the measurement setup, the Events tab
displays multiple pages of data.
FIGURE 17-5
Event History Tab- 1/3 Octave Page
1.
Press Enter
5
to switch
between the frequency
graph, OBA value, or the ref-
erence.
2.
The highlighted band is
the L
ω
eq average sound level
for the duration of the event
at the selected frequency.
3.
When the frequency graph
is selected, press the
left or
right buttons (
46
) to move
from event to event. Numeri-
cal values displayed below
the chart reflect the selected
frequency.
1.
2.
4.
3.
1.
2–3.