About The Normalized Octave Band Page (Live; About The Triggering Page (Live - Larson Davis SoundAdvisor 831C Reference Manual

4.1.4 About the Normalized Octave Band Page (Live Page 4)
FIGURE 4-4
Live Tab: Normalized Octave Band Page
1.
2.
4.1.5 About the Triggering Page (Live Page 5)
FIGURE 4-5 Live Tab: Triggering Page
1.
2.
SoundAdvisor Model 831C
This page only displays when you enable the Spectral Ln feature in the
TAKE NOTE
measurement setup file.
Similar to the regular octave band pages, the normalized band pages show
octave bands (for 1/1 or 1/3) and the numerical values of the highlighted
band. However, the data is normalized using the reference spectra you define
3
at Tools System Properties Reference Spectra.
Table 4.1 User-Defined Reference Spectra Definitions
User Defined
Positive Frequency Weighting
Negative Frequency Weighting
The Triggering page shows when any of the Trigger levels you define in the
measurement setup have been exceeded.
Understanding the Live Tab
1.
Use the Right and Left navigation buttons (
to highlight the bands and change the numerical
values.
2.
On this page, pressing
selector between the following options: Ref, Set
Reference, and back to the Octave.
3.
View References 1, 2, 3, 4, A, -A, C, and -C.
3.
4.
Save the current selected values to use as a
reference by selecting Set Reference (highlight +
4.
5
).
1.
Current live sound as measured with the
frequency weight and detector chosen in the
measurement Setup.
2.
When the SPL1 & SPL2 trigger levels are
exceeded they display in orange and red the
higher they go.
3.
If sound levels in the measurement exceed
the Peak triggers, the values here display in
3.
orange and red, the higher they go.
46
5
moves this arrow
1 2 3 4
A C
-A -C
4-4
)