Keysight N9912A User Manual page 152

To view other formats, change the trace format, then select Default. Learn how to
change format on page 41.
Searching with Markers
Marker Searches are used to move markers to locations on the trace which exhibits
the characteristics of the search criteria. Learn 'What is a Peak'' on page 154.
How to Search with Markers
The following menu structure applies to NA Mode. Keystrokes will be slightly
different for CAT, Pulse Measurements, and SA Modes.
 Activate the marker to be used for the search (NOT necessary with Bandwidth
 Then press Mrk ->/Tools.
 Then
 Then choose one of the following:
152
Mag & Phase
search.)
Marker Search
(NA Mode ONLY)
Tracking ON OFF
o
ON causes the active marker to search for the specified criteria with each new
o
sweep. Search criteria can include: Target, Bandwidth, Peak, Min. The
searches begin with the first sweep after Tracking is turned ON, based on the
current search type. The stimulus setting for a marker can NOT be changed
manually. Trk appears next to the marker number.
OFF causes a new marker search only when the search feature is re-executed.
o
Moves the active marker to the HIGHEST amplitude data point of the
Peak
o
trace. Peak Excursion value is ignored. In SA Mode, the LO feed-through signal
(0 Hz) is also ignored.
(Not available in DTF) Moves the active marker to the LOWEST amplitude
Min
o
data point of the trace.
(NA Mode ONLY) Enter the Target value. The marker moves to the first
Target
o
occurrence of the Target value to the right of its current position. The FieldFox
interpolates between measured data points to find the exact Target value to two
decimal points. The interpolated X-axis value is displayed in the marker readout
or marker table. Subsequent presses of the Target softkey cause the marker to
move to the right to find the next occurrence of the Target value. When the
marker reaches the end of the stimulus range, it "wraps around" and continues
the search from the beginning of the stimulus range.
Bandwidth ON OFF
o
and OFF. When OFF, the marker table appears showing the X and Y-axis
positions of all enabled markers.
(NA Mode ONLY) Specify the level in dB from the peak or valley
Bandwidth
o
where bandwidth is measured.
Negative numbers search for a Peak bandpass, such as a filter S21 response.
o
Either of the following TWO methods can be used to search for a Valley or
o
Notch filter, such as the S11 response of a bandpass filter.
(NA Mode ONLY) Use to quickly toggle BW Markers ON
0.705, -73.7°
FieldFox User's Guide