Larson Davis 824 User Manual

9/29/09 System 824 Views 5-35
The following explains each of the displays:
Display label - Shows the current display (for example,
“SLM Exposure-c”).
C-Weighted TWA - This display shows the C weighted
TWA (L
eq
) over the duration of the measurement.
A-Weighted TWA -This display shows the A weighted
TWA (L
eq
) over the duration of the measurement.
This measurement is commonly used
for assessing the effectiveness of
hearing protection.
C minus A Weighted TWA - This display shows the C
weighted TWA (L
eq
) minus the A weighted TWA (L
eq
) over
the duration of the measurement.
Ln Centiles Views
The uand darrow keys can be
used to cycle between the Current
SLM, Overall SLM, Exposure, Ln
Centiles, and Stats views from the
Ln-a display.
The Ln Centiles View has two displays which can be
accessed by simply selecting Ln Centiles with the
c Check
key from within the main View menu then cycling through
the views with the
randlarrow keys until the desired
display appears.
Ln-a Display The Ln-a display consists of two major components:
• Display label
• Percentile values & levels
The Ln Centiles-a display is shown below for the LOG
instrument:
Display label
C - Weighted TWA
A - Weighted TWA
C-A Weighted TWA

Larson Davis 824 Specifications

General

Brand	Larson Davis
Model	824
Category	Measuring Instruments
Language	English