Other Level - (Log Only) - Larson Davis System 824 Reference Manual

Example:
When German functionality
enabled, the history period will be
rounded to the nearest 5 second
interval, and a warning, "Setting
Conflict", will appear. If the "Period
Units" equal 1/32nd of a second,
then the period will be forced to a
count of 160 (5 seconds).
In the SSA instrument, the shortest
time history period is 1/8th of a sec-
ond. If the period is set to [1/32] of a
second the history period will be
forced to multiples of 4 to support
the maximum data rate of 8 samples
per second and the warning "Setting
Conflict" is displayed.

Other Level - (LOG only)

7-26
To measure 2 samples per second, set Hist Period to 16 and Period
Units to 1/32s (16/32=1/2).
This setting provides the following four options:
is 1/32s - This sets the History Period Unit to 1/32 sec-
ond intervals. Since the instrument samples the detec-
tor 32 times per second, this is the smallest resolution
time period that you can use. If you set the time his-
tory period to 1/32 second (i.e. period setting = 1 and
unit setting = Sample = 1/32s), the instrument will
store every sample it takes.
1.0s - This sets the history period unit to one second.
10.0s - This sets the history period unit to ten sec-
onds.
60.0s - This sets the history period unit to sixty sec-
onds.
Use the Other Level setting to select the second measure-
ment level stored in each time history record along with the
L . This setting provides the following options:
eq
None - The instrument stores the L
store a second level.
Pk-I - The second level the instrument stores is the
greatest instantaneous level (L
mary peak detector that occurred during the time his-
tory period. The primary peak level is weighted
according to the state of the Pk Weighting setting.
Pk - II - The second level the instrument stores is the
greatest instantaneous level (L
ondary peak detector that has occurred during the
time history period. The secondary peak level is
weighted according to the state of the Weighting set-
ting.
824 Reference Manual
but does not
eq
) detected by the pri-
pk
) detected by the sec-
pk
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