Larson Davis SoundAdvisor 831C, Reference Manual

Page: 35 / 214

SoundAdvisor Model 831C Understanding the Live Tab 4-1
Module 4 Using the Data Display
T
he 831C takes a measurement, and simultaneously displays that same
information in a variety of ways. Using the 831C tabs (select left or right) and
their associated pages (scroll down and up), you can take a measurement and
view the following metrics at the same time:
• Real time sound metrics
• Frequency of sound at each octave
• L
eq
, L
S
, L
PEAK
of the overall or live sound
• Fast and Impulse detectors
• Temperature, GPS, and elevation of the measured sound
• The current sound, weighted for specific values
4.1 Understanding the Live Tab ...............................................................................................4-1
4.1.1 About the SLM Page (Live Tab Page 1) .................................................................4-2
4.1.2 About the Big Digit Sound Page (Live Tab Page 2) ..............................................4-3
4.1.3 About the Octave Band Analyzer Page (Live Page 3) ..........................................4-3
4.1.4 About the Normalized Octave Band Page (Live Page 4) .....................................4-4
4.1.5 About the Triggering Page (Live Page 5) ..............................................................4-4
4.1.6 About the Preamplifier Interface Page (Live Page 6) ..........................................4-5
4.1.7 About the Power Page (Live Page 7) ....................................................................4-5
4.1.8 About the Memory Page (Live Page 8) .................................................................4-6
4.2 Understanding the Overall Tab ..........................................................................................4-7
4.2.1 About the Overall SLM Page (Overall Page) .........................................................4-7
4.2.2 About the Overall Big Digit Page (Overall Page) ..................................................4-7
4.2.3 About the Overall Leq Page (Overall Page) .........................................................4-8
4.2.4 About the Octave Band Analyzer Page (Overall Page) ........................................4-8
4.2.5 About the Normalized Octave Band Page (Overall Page) ...................................4-9
4.2.6 About the Ln Percentiles Page (Overall Page) ...................................................4-10
4.2.7 About the Exceedances Page (Overall Page) .....................................................4-11
4.2.8 About the Overloads Page (Overall Page) .........................................................4-11
4.2.9 About the Community Noise Page (Overall Page) ............................................4-11
4.2.10 About the C Minus A Impulsivity Page (Overall Page) .......................................4-12
4.2.11 About the TA-Lärm Page (Overall Page) ............................................................4-12
4.2.12 About the Sound Exposure Level Page (Overall Page) ......................................4-12
4.2.13 About the Metrics Matrix Page (Overall Page) ...................................................4-13
4.2.14 Viewing the Power Page (Overall Page) .............................................................4-13
4.3 Viewing Weather Related Data .........................................................................................4-14
4.4 Understanding the Session Log Tab ................................................................................4-15
4.5 Adjusting the Graph Scale .................................................................................................4-15
4.6 Enabling or Disabling Display Tabs ..................................................................................4-16
4.1 Understanding the Live Tab
When the 831C is powered on, the Live tab is the first display you’ll see. Since
the values on the Live tab show active, real-time values that the meter is
currently sensing, this page is not controlled by the
9
(RUN/PAUSE) button