242 Keysight N9927-90001 User’s Guide
RTSA (Real-Time Spectrum Analyzer) Mode—Option 350 (CPU2 Only)
RTSA Mode Settings
—Sample [S] Displays the center measurement of all the measurements
in each bucket. This setting gives a good representation of the
random noise in each bucket. However, it does not ensure that all
signals are represented.
—RMS Average
[A] Displays the Root Mean Squared (RMS) average
power of all the measurements in each bucket. This is the preferred
method when making power measurements.
Repeat the detection setup process as needed for up to 4 traces and 4
detection methods.
Average Count, Show Density, Blue, and Red Percentage Limits
How to set:
—Press Meas Setup 4
Then choose one of the following:
— Average Count
– Changes the quantity of traces averaged for certain
trace states (i.e., MaxHold, MinHold, or RMS Average). Refer to
“Average Count”.
— Show Density
– (Density Spectrum Only) Displays a histogram image
of the traces.
— Blue Limit %
– (Density Spectrum Only) Changes the percentage of
the trace that has a blue limit (0.05% to 100%, default is 0.05%). This
setting is coupled to the color bar in the upper right corner of the
FieldFox display.
— Red Limit %
– (Density Spectrum Only) Changes the percentage of
the trace that has a blue limit (0.05% to 100%, default is 100%). This
setting is coupled to the color bar in the upper right corner of the
FieldFox display.
— Blue Limit dBm
– (Spectrogram Only) Changes the power level
(dBm) of the trace that has a blue limit (–210 dBm to 30, default is
–90 dBm). This setting is coupled to the color bar in the upper right
corner of the FieldFox display.
— Red Limit dBm%
– (Spectrogram Only) Changes the power level
(dBm) of the trace that has a blue limit (–210 dBm to 30, default is
–50 dBm). This setting is coupled to the color bar in the upper right
corner of the FieldFox display.
Blue limit and red limit percentages are coupled to the density percentage
limit bar in the upper right of the FieldFox display. Or, for the blue limit and
red limit power levels (dBm) are coupled to the Spectrogram power level
(dBm) limit bar in the upper right of the FieldFox display.
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