SoundAdvisor Model 831C
Setting Up the Event History Measurement
17-2
TAKE NOTE
The G4 LD Utility also provides a simple, file transfer-style interface for
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.
TAKE NOTE
If your Setup includes
Continuous
Run Mode on the Control tab, see
below to predict how events will be logged when they persist from one
Auto-Store
Period
into the next.
Step 3
Press the top-left softkey (
*//
) until the
Event Triggers
tab displays.
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
"Setting Advanced Event Triggers" on page 17-6
before continuing.
Step 5
Press the top-left softkey (
*//
) to navigate to the
Event History
tab.
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.
TAKE NOTE
If you are using this feature with Sound Recording, there are constraints on
your Minimum
Duration. See
18.3.1 About Sound Recording Constraints
.
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.
LEARN MORE
17.5 Understanding Level and Dynamic
.
Step 8
If desired, enable
Event Time History
, and choose values for the following
optional settings as shown in
