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Controlling the Acquisition of Data > Using Triggers to
Capture Just What You Want > Triggering
Event Tab
Event Type
Setting
Description
Time-domain BW
Time-domain BW is a
fi
lter used to process the trigger input signal
before the trigger system analyzes the signal.
Frequency Mask
For the Frequency Mask setting, events where the trace crosses
the edge of the mask when it should not or when the trace does not
cross the edge of the mask when it should de
fi
ne the trigger event.
Use
Mask Editor
(on the Event tab when Type is set to Frequency
Mask) to create and modify Frequency Masks.
Violation
Speci
fi
es the type of transition that de
fi
nes a violation.
RBW
Speci
fi
es the resolution bandwidth.
Auto
Speci
fi
es whether the RBW is adjusted automatically or manually.
DPX Density
For DPX Density, the percentage of time the signal falls within
the measurement box is used to de
fi
ne a trigger event. The
measurement box is de
fi
ned by frequency and amplitude values.
Density
Speci
fi
es whether a trigger event is de
fi
ned by the DPX Density value
exceeding (Higher) the speci
fi
ed Threshold value or is de
fi
ned by the
DPX Density value falling below (Lower) the speci
fi
ed Threshold
value.
Threshold
Threshold speci
fi
es the density value used for determining a trigger
event. Density is a measure of how much time the signal is present
in a particular region in the DPX Spectrum graph. The range for
this value is 0 to 100%.
Frequency
Speci
fi
es the frequency at the center of the measurement box. The
+/- value speci
fi
es the edges of the measurement box above and
below the Frequency setting.
Amplitude
Speci
fi
es the amplitude of the center of the measurement box. The
+/- value speci
fi
es the edges of the measurement box above and
below the Amplitude setting.
Runt
De
fi
nes a trigger event based on a pulse amplitude that crosses one
threshold but fails to cross a second threshold before recrossing
the
fi
rst.
Pulse
Speci
fi
es whether the runt trigger is de
fi
ned by a positive-going pulse
or a negative-going pulse.
High level
The High level de
fi
nes the upper voltage limit (
fi
rst threshold) of a
runt pulse.
Low level
The Low level de
fi
nes the lower voltage limit (second threshold) of a
runt pulse.
xxx
Source = Trig In (front).
326
RSA6100A Series Real-Time Spectrum Analyzers Help
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