Larson Davis System 824 Training Manual

2/19/98 Log - Logging Sound Level Meter (Option 01) 6-11
Step 3 Press r to enter the “Pk-1 Excd Lvl” screen.
Step 4 The u and d arrow keys increment
through the exceedance level numbers, while
l and r toggles between the three
numeric fields. Once you have selected a
desired “Pk-1 Excd Lvl” value, press c.
The new “Pk-1 Excd Lvl” value now appears in the
associated field. Press l to exit the “Event Counting”
screen.
Ln Centiles
Ln Centiles (percentiles) represent the percent of time
that a sound pressure level exceeded a particular deci-
bel value. An L50 with a value of 47.8 means that 50%
of the measurement time, the sound pressure level was
greater than 47.8 dB.

Larson Davis System 824 Specifications

General

Brand	Larson Davis
Model	System 824
Category	Measuring Instruments
Language	English