Model 831 Manual Event Sound Recording 16-15
Enter the desired value and press 5 to conclude the
process.
Note that the maximum value of Pre-trigger Time is 9
seconds.
Additional Considerations
The implementation of event sound recordings involves the
interaction of parameters from both the Event History and
Sound tabs as follows:
Event Time History Setup
• Minimum Duration
• Continuation Period
Sound Setup
• Snapshot Time
• Pre-Trigger Time
Several examples of how these parameters effect the length
of the sound recording are presented in the following
diagrams.
FIGURE 16-19 Less Than Minimum Duration: No Event/No Recording
Pre-Trigger
Time
Minimum
Duration
Threshold
Exceedance
No Recording: Level Drops
Below Threshold Before
Minimum Duration
Snapshot Time
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