Larson Davis System 824 - Daily Views; Daily-A Display

11/8/00 System 824 Views 6-53
Time at Cursor
- Shows the time in seconds of the sample
indicated by the cursor.
Current Sample
- This is the current sample number as
indicated by the cursor.
Total Number of Samples
-Shows the total number of sam-
ples taken for this exceedance.
Total Number of Excd Records
- Shows the total number
of exceedances recorded.
The exceedance time history
includes 10 samples preceding the
event and 10 samples after the event.
Graph of Exceedance Time History
- Shows graphically
all of the samples taken for the time history.
Daily Views
The Daily history logs daily sound statistics including Leq
24, LDN, CNEL, Ln’s, Max, Min, and Peak data. The mea-
surement period is from 12:00 midnight to 12:00 midnight
each day. For each hour it logs Leq, Background Leq and the
hourly Excd Leq. You can access the
Daily
display by
selecting
Daily
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.
The hourly data is accessed by pressing the
c
Check key
while in the
Daily-a
or
Daily-b
displays.
Daily-a Display
The
Daily-a
display consists of 11 major components:
•Display label
• Record Number
•Elasped Time
• Date
• Leq Reading
• LDN and CNEL Readings
• Maximum and Minimum levels