Keysight Technologies FieldFox A Series, User Manual

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422 Keysight N9927-90001 User’s Guide
Interference Analyzer (SA Mode) – Option 236
Spectrogram and Waterfall Displays
Spectrogram and Waterfall Displays
Spectrogram and Waterfall displays provide a visual history of the measured
spectrum. Each display type can be used to locate intermittent signals or to
view signal levels and frequencies over time.
Spectrogram is a single horizontal line of color-coded power while Waterfall
uses a 3-D color-coded display. The functional difference between these two
displays is that Spectrogram provides less trace detail than Waterfall display.
However, it also allows more traces to be viewed.
These two displays can NOT be used with Channel Measurements.
In SA mode, Traces can be recorded from, or played back into, any
measurement type (such as Channel Power or Occupied BW) or any display
type (such as Spectrogram and Waterfall). See “How to Record a Session” on
page 430 to learn how to save traces.
Spectrogram Display (SA Option)
Spectrogram draws the most recent trace record at the bottom of the stack of
previously-drawn trace records. Drawing the live trace on the display is
optional.
Figure 17-1 Spectrogram display- Overlay view- with time markers 23 seconds apart.
The following settings all contribute to the sweep time of an individual trace,
and therefore, the total elapsed time that can appear on the screen in
Spectrogram display:
— Frequency Range. Learn more in “Frequency Range” on page 148 .
— Resolution BW and Video BW. Learn more in “Resolution Bandwidth (Res
BW)” on page 165 and “Video Bandwidth (Video BW)” on page 166 .
— Sweep Time (Acquisition). Learn more in. “Sweep Acquisition” on page 169