Keysight Technologies C Series - Average Count, Show Density, Blue, and Red Percentage Limits

Keysight N9915-90020 User’s Guide 277
RTSA (Real-time Spectrum Analyzer) Mode—Option 350
RTSA Mode Settings
— Normal [N] Provides a better visual display of random noise than
Positive peak and avoids the missed-signal problem of the Sample
Mode. Should the signal both rise and fall within the bucket interval,
then the algorithm classifies the signal as noise. An odd-numbered
data point displays the maximum value encountered during its
bucket. An even-numbered data point displays the minimum value
encountered during its bucket. If the signal is NOT classified as noise
(does NOT rise and fall) then Normal behaves equivalently as Positive
Peak.
—
Positive Peak [P] Displays the maximum value of all the measurements
in each bucket. This setting ensures that no signal is missed.
However, it is not a good representation of the random noise in each
bucket.
—
Negative Peak [p] Displays the minimum value of all the
measurements in each bucket.
—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.