Larson Davis SoundAdvisor 831C Reference Manual page 132

SoundAdvisor Model 831C
Before you begin:
• Verify that firmware option 831C-ELA has been installed and enabled on your
meter. For more information, see 14.4 Enabling or Disabling Optional
Firmware.
Step 1.
Navigate to Tools
The G4 LD Utility also provides a simple, file transfer-style interface for
TAKE NOTE
configuring, saving, and transferring Setup files to your PC or to another meter.
For more information, refer to the G4 LD Utility Manual.
Step 2.
Highlight the name of the Setup you want to configure with Event History.
If your Setup includes Continuous Run Mode on the Control tab, see
TAKE NOTE
below to predict how events will be logged when they persist from one
17.1
Auto-Store Period into the next.
Step 3.
Press the left softkey (
Step 4.
If needed, edit the Trigger Source, and Trigger Level values.
• For more information about setting advanced event triggers, such as using
Running Leq, and 1/1 and 1/3 octave event triggers, see 17.4 "Setting Advanced
Event Triggers" on page 132 before continuing.
Step 5.
Press the left softkey (
Step 6.
Select the checkbox in-line with Event History, and enter values for the Min/
Cont Duration.
About the Minimum Duration: To prevent many small events of short
duration, you can select a Minimum Duration. This is the length of time in
seconds that levels must exceed the trigger levels to be labeled an event. This
value can be 60 seconds or less.
If you are using this feature with Sound Recording, there are constraints on
TAKE NOTE
your Minimum Duration. See
About the Continuation Period: A noise event is initiated when the sound level
exceeds the trigger level or levels you define. There may be situations where the
sound level drops below the threshold level for a short period before exceeding
them again. Statistically, if you want to consider this a continuation of the first
event rather than a new event, you can set a Continuation Period. This is the
length of time in seconds following an event where the measured sound level
can dip below, then exceed the threshold level again, and still be statistically
considered part of the initial event. This value must be 9 seconds or less.
However, if the measured level drops below the threshold level and remains
below it during the continuation period, the sound event is considered
complete.
Step 7.
Select Level or Dynamic from the Trigger Method drop-down menu.
For more information, see
LEARN MORE
Triggering.
3
Setup Manager.

*//
) until the Event Triggers tab displays.
*//
) to navigate to the Event History tab.
19.3.1 About Sound Recording
17.5 Understanding Level and Dynamic
Setting Up the Event History Measurement
Table
Constraints.
127