SoundAdvisor Model 831C
Creating a Custom Setup File On the Meter
6-4
About Using the Gain Feature
When using a microphone with sensitivity of 50 mV/Pa, the input overload
occurs approximately as shown in
.
About Integration Methods
Although the 831C measures levels at all 3 detector and frequency weighting
settings according to your selection, some features require a single
combination. The level defined by the detector and frequency weighting you
select is used for the computation of Ln, Exceedances, Sound Exposure, and
Sound Events. However, some features may not be available for Exponential
Integration Method. See
Appendix C Glossary on page C-1.
Step 5
If OBA is enabled for your meter, use the right (
//*
) softkey to navigate to the
OBA
tab as shown in
.
FIGURE 6-5
Setup Manager: OBA Tab
1.
Normal
or
High:
For measurement range specifi
-
cations,
see
Table A.8, “Octave Band Analysis 1/1
Octave Linearity Range,” on page A-13
.
2.
Select
1/1 Octave
bandwidth,
1/3 Octave
band
-
width, or
both
simultaneously.
3.
Choose a
Frequency Weight
for the 1/1 Octave
and 1/3 Octave bandwidth frequency analysis.
4.
For more information about
Max Spec
(Maximum
Specification) values, see “Bin Max” and “At Lmax” in
the
Appendix C Glossary on page C-1.
5.
Spectral Ln
values can be measured using 1/1 or
1/3 octave bandwidths. If both
1/1 and 1/3
are
selected in the
Bandwidth
setting,
Spectral Ln
only
measures for 1/3 octaves.
Step 6
Use the right (
//*
) softkey to navigate to
the
Ln Percentiles
tab as shown in
.
FIGURE 6-6
Setup Manager: Ln Percentiles Tab
Table 6.1 OBA Overload Levels
Input Gain, dB
OBA Range
Overload Level, dB peak
0
High
143
20
High
123
0
Normal
110
20
Normal
90
1.
3.
4.
2.
5.
