Keysight Technologies C Series - Alignments; Display Line

278 Keysight N9915-90020 User’s Guide
RTSA (Real-time Spectrum Analyzer) Mode—Option 350
RTSA Mode Settings
— 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.
Average Count
The Average Count setting is used mainly with the RMS Average Trace State
described in
“Trace Display States (RTSA)” on page 275. (But, also applies to
the MaxHold or MinHold trace states.) In the RMS Average Trace State, the
Average Count setting determines the number of sweeps to average. The
higher the average count, the greater the amount of noise reduction.
For all three of these Trace States (RMS Average, MaxHold, or MinHold), when
Sweep 3
Continuous is set to OFF, press Restart to reset the sweep count to 1,
perform <n> sweeps, then return to Hold.
How to set Average Count
—Press Meas Setup 4
—Then
Average Count
— Enter a value from 1 to 10,000 using the numeric keypad, the arrows,
or the rotary knob.
—Press Enter
Alignments
The RTSA mode requires all three alignment types: amplitude, RF burst, and
channel equalization. Refer the SA chapter’s
“Alignments” on page 206 for
information on all Alignments.
Display Line
A display line is a simple, horizontal line that can be placed at any amplitude
level on the RTSA screen. Use a display line as mental guide for visual
feedback.
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.