Larson Davis System 824, Reference Manual

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6-36 824 Reference Manual 11/8/00
The following explains each of the display’s components:
Display label - Shows the current display (for example,
“Ln-a”).
Percentage settings are entered with
a 1/100th dB resolution, but are dis-
played to the nearest 1/10th dB when
10 dB or greater.
Percentile values & levels - The L
n
(percentile levels) level
is that level which is exceeded ‘n’ percent of the measure-
ment time. By modifying the six settings you can select any
six percentile values to be displayed at a time. For example,
if you set one of these settings to 10.5, then L
10.5
would be
one of the six percentiles that is displayed. The value of
L
10.5
is the level that has been exceeded 10.5% of the time
during the overall measurement.
Ln-b Display
The Ln-b display consists of five major components:
• Display label
• Current % record
• Ln
• Elapsed Time
• Ln graph
The Ln Centiles-b display is shown below for the LOG
instrument:
The following explains each of the display’s components:
Display label - Shows the current display (for example,
“Ln-b Centiles”).
Display label
Ln graph
Ln
ElapsedTime
Current%