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Larson Davis System 824 User Manual

Larson Davis System 824
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7-22 824 Reference Manual 11/8/00
ment is reset. A special flag is set with all exceedance
records whose L
MAX
is greater that this level.
This setting can take on any integer value within the follow-
ing range:
0 to 255 dB
PK Excd Lvl 1 - (LOG, SSA)
The
Pk Excd Lvl 1
sets the trigger level for the primary peak
detector (Pk-I). When the primary peak detector level
exceeds this threshold, the corresponding Pk-I exceedance
count is incremented once. You can view this count on the
Stats-b
display. This count is associated with the overall
measurement data and is reset when the overall measure-
ment is reset.
NOTE: The data for this comes from the
instantaneous peak level, selected by the
Weight setting.
This setting can include any integer value within the follow-
ing range:
0 to 255 dB
Pk Excd Lvl 2 - (LOG, SSA)
The
Pk Excd Lvl 2
sets the trigger level for the secondary
peak detector (Pk-II). When the secondary peak detector
level exceeds this threshold, the corresponding Pk-II exceed-
ance count is incremented once. You can view this count on
the
Stats-b
display. This count is associated with the overall
measurement data and is reset when the overall measure-
ment is reset.
This setting can include any integer value within the follow-
ing range:
0 to 255dB
Hysteresis - (LOG, SSA)
To prevent multiple triggering/counting of the same event, a
hysteresis value may be entered. The event is triggered when
a level goes over a corresponding trigger level, but does not
become re-armed until the level drops below the value of the
trigger level minus the hysteresis value.

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Larson Davis System 824 Specifications

General IconGeneral
BrandLarson Davis
ModelSystem 824
CategoryMeasuring Instruments
LanguageEnglish

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