Larson Davis System 824, Справочное руководство

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11/8/00 RTA (optional) 10-23
Setup
Use the
d
down arrow key to move
to the Setup display or press the
V
VIEW key, highlight Setup and
press the
c
Check key.
The Trigger Setup display shows the trigger settings in an
interpretive way. Only applicable settings are displayed.
The interpretation of the Trigger Setup display is as follows:
• The 824 will arm when the 1 kHz filter is greater than
80.0 dB for a period of 1 second.
• When the level of the 1 kHz filter drops below 80.0 dB
for 0 seconds (immediately), the 824 is triggered and
begins taking a measurement.
Pressing the
c
Check key provides
quick access to the trigger settings.
• The measurement continues until the End condition is
met which means that the level must drop below 50 dB
for 2 seconds.
Display label
Trigger State
Filter level in dB
Selected filter frequency
Trigger source frequency
Repeat count
No. of pretrigger or triggered
ByTime samples
Shows that triggering is turned on
Display label
Arm conditions
Trigger conditions
End conditions
Repeat measurement 2 times