Larson Davis System 824, Reference Manual

Page: 41 / 536

9/12/00 Overview 2-7
Step 1
Let’s look at the SLM&RTA (SSA) ID Access the
Setup Menu by pressing
S
and use the
d
and
u
keys to highlight the SLM&RTA ID, as
shown below:
Step 1
With SLM&RTA highlighted, press
c
to select it
as the current ID.
You can see from the top line that the
meter is in the SLM+RTA mode, and
the bold SLM indicates that it is the
SLM display or VIEW as we refer to
it when using the Model 824.
Step 2
Press the RUN/STOP key
s
to begin a measure-
ment and obtain a display resembling the follow-
ing:
The large numerals represent the SPL measurement taken
with the Slow detector and the A-weighting. In the lower
left is an indication of the Leq value and the elapsed time of
the measurement for which the Leq value is calculated. The
graph being traced across the display is a time history of the
SPL value.
Stop, Pause and Back Erase Functions
While taking a measurement you can stop, pause, and back
erase.
Stopping and Starting
Measurements To stop the measurement, press the
s
key. Restart by
pressing
s
.
Pausing Measurements To pause the measurement press the
p
PAUSE key. To
continue the measurement press the
p
key a second time.