Tektronix RSA6100A Series, Help Manual

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General Signal Viewing > Common Controls for General
Signal Viewing Displays Prefs Tab
Prefs Tab
The Prefs tab enables you to change parameters of the measurement display. The parameters available on
the Prefs tab vary depending on the selected display, but include such items as enabling/disabling Marker
Readout, switching the Graticule display on/off, and Marker Noise mode.
Each of the General Signal Viewing displays maintains its own separate values for the controls that appear
on the Prefs tab. Some parameters appear with most displays while others appear with only one display.
For example, the Show Marker readout in graph check box appears in the Prefs tab for every display.
However, the Show Power Trigger level check box only appears on the Amplitude vs Time Prefs tab.
The following table explains the controls that can appear on the Prefs tab.
Setting Description
Show: Selects the horizontal settings that appear below the graph area. You can choose Start,
Stop or Center, Span.
Max trace points Sets the number of trace points used for marker measurements and for results export.
Show trace legend Enables display of a legend in the measurements area that shows the Detection method
and Function setting for displayed traces. The color of the legend text matches the color
of the associated trace.
Show graticule Select to display or hide the graticule.
Show Parameter Readouts For the DPX Spectrum display, enables/disables the display of DPX parameters. The
parameters readout shows 100% Probability of Intercept, Transforms/s, and FFT Points.
Show Marker readout in graph
(selected marker) Shows or hides the readout for the selected marker in the graph area.
Show timestamp in graph
(selected line) For spectrogram displays, this readout shows or hides the timestamp associated with the
selected line or marker position.
Show Power Trigger Level Displays or hides a green line in the graph that indicates the level at which the power
trigger is set. The line is not displayed if Trigger is set to Free Run.
Marker Noise mode Select to enable or disable the Marker Noise mode. Use this mode to measure noise on
the trace. See
Using Noise Markers in the Spectrum Display (see page 288) .
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Show Parameter Readouts (DPX Spectrum Only)
The elements of the Show Parameter Readouts are:
100% POI – This is the minimum event duration required to ensure 100% Probability of Intercept or
event capture. This duration depends on interaction between span, RBW, and FFT length. You can
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RSA6100A Series Real-Time Spectrum Analyzers Help