Larson Davis System 824, Reference Manual

Page: 213 / 536

11/8/00 Using ID Setting Files 7-33
logged. This setting can take on any time value in the fol-
lowing range:
0-255 seconds
Excd Time Hist - (LOG)
The Excd Time Hist setting enables you to indicate whether
or not to have an Exceedance Time History saved as part of
the exceedance. This setting provides the following two
options:
Yes
- The Exceedance Time History will be saved.
No
- The Exceedance Time History will not be saved.
T.H. Period - (LOG)
The T.H. Period setting allows you to set the period of time
for the Exceedance Time History in 1/32 seconds. This set-
ting can take on any time value in the following range:
1/32 - 32/32 seconds
Excd Trigger - (LOG)
The Excd Trigger setting enables you to select whether the
Exceedance Trigger utilizes the fixed trigger levels or uses a
special 10 dB rise then fall Passby trigger. This setting pro-
vides the following two options:
Level
- Enables fixed level triggering.
PassBy
- Enables 10 dB Passby triggering.
Excd Time - (LOG)
The Excd Time setting allows you to select whether the time
reported for the exceedance is the time that it started or the
time of the maximum level. This setting provides the follow-
ing two options:
Using the symmetry data provided
with every exceedance it is possible
to calculate the time of the Max even
though you choose to record the start
time of the event.
Start
- The exceedance time will be logged at the
beginning of the exceedance event.
Max
- The exceedance time will be logged at the max-
imum level of the exceedance event.