Storing The Measurement; Low Level Sound Fields; Stopping The Measurement - Larson Davis SoundAdvisor 831C Reference Manual

7.3.3 Stopping the Measurement

7.4 Storing the Measurement

A measurement
TAKE NOTE
can only be stored when the
SoundAdvisor is stopped.
You cannot save a
TAKE NOTE
file with the same name as a
currently saved data file. If
you want the new data file to
replace the old data file, you
will need to rename or delete
the old file first. See
"Measurement Data Files" on
page 8-1.

7.5 Low Level Sound Fields

SoundAdvisor Model 831C
The SoundAdvisor can be stopped during a run or a pause, and will
stop the run clock. Resuming a run will continue the overall
measurement which has been stopped. The run clock will also begin
again from the time indicated when the stop occurred.
To store a measurement, follow these steps:
Step 1 Press the Stop 7 button to stop the measurement.
Step 2 Press the Store 7 button (unless your preferences are set
to Auto-store, then the first Stop will store or prompt to
store).
Step 3 You will be prompted to save the file. You can change the
name of the data file by highlighting the name and
pressing Enter 5, and an editor will appear. When
finished, select Yes to save.
As long as the sound level being measured is within the measurement
range shown in "SLM Performance" on page A-2., inherent (self-
generated) noise and linearity problems can be ignored. It is possible to
manually correct the measured RMS sound pressure levels for the
typical inherent noise levels (see the noise floor specifications in "SLM
Performance" on page A-2.) as long as the difference between the
measured sound level and the inherent noise level is greater than 3 dB.
This is done by subtracting the inherent sound level from the total
sound level using the following formula:

Lcorr
where
Lcorr = corrected sound level
Lmeas = measured sound level
Linh = inherent noise level

Storing the Measurement

(
( Lmeas )/10
10 Log 10
)
( Linh )/10

10
7-8