SoundAdvisor Model 831C
Setting Up the Event History Measurement
126
Module 17
Using Event History Firmware
T
his module shows how to perform a measurement using Event History, a feature of
option 831C-ELA. This firmware upgrade provides event-based logging analysis and event
history data with manual or timed storage of statistical data and measurement history.
FIGURE 17-1
Sound Event
1.
An event starts when the measured sound
pressure level exceeds at least one
Trigger
Level
and persists longer than the
Minimum
Duration
you define.
2.
An event stops when the sound level drops
2 dB below the trigger level. This 2 dB
hysteresis is to avoid the creation of multiple
exceedances when the sound level is
fluctuating at or near the trigger level.
In this module:
17.2.1 Using (Continuous) Daily Auto-Store With Event History
17.3.1 Viewing Octave Band and Spectral Events
17.4.1 Using Running Leq as an Event Trigger
17.4.2 Using 1/1 Octave and 1/3 Octave Event Triggers
17.5.1 Understanding Level Triggering
17.5.2 Understanding Dynamic Triggering
17.1 Setting Up the Event History Measurement
This section shows how to add some or all of the following capabilities to a measurement
setup file: Trigger Levels, Event History, Event Time History, and Alert Notifications.
2.
1.
17
Summary of Contents for 831C-FFT
Page 1: ...Larson Davis SoundAdvisor Model 831C Sound Level Meter Reference Manual...
Page 214: ...SoundAdvisor Model 831C A 50 FIGURE A 47 Model 831C with 377C20 Microphone...
Page 215: ...SoundAdvisor Model 831C A 51 FIGURE A 48 Model 831C with 377C20 Microphone...
Page 216: ...SoundAdvisor Model 831C A 52 FIGURE A 49 Model 831C with 377C20 Microphone...
Page 223: ...SoundAdvisor Model 831C A 59 A 10 Declaration of Conformity...
