Keysight Technologies FieldFox N9912A104 User Manual page 161

Interference Analyzer (SA Mode) – Option 236
Spectrogram and Waterfall Displays
— An invalid (very large number) appears when a trace record is not available
How to Restart the Spectrogram/Waterfall
Press Sweep 3 then Restart.
Averaging
Averaging can be enabled on the underlying measurement. Press Trace 6 then
State
Measurement Preset
Measurement Preset resets ONLY the Spectrogram and Waterfall display
settings. It does not reset the measurement settings.
— Press Preset.
— Then
Waterfall Display
The live trace is always drawn on a Waterfall display. Older trace records scroll
up from the displayed trace and eventually off the screen. Because of this,
locate the live trace on the bottom of the screen using the scale and reference
settings. Learn how in
Although this document refers to past traces as 'records' these traces are
not saved. They are only drawn on the FieldFox screen.
Figure 9-2 Waterfall display- moderate angle- with time markers 1 minute 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 Waterfall
display:
Keysight N9912-90001 User's Guide
at one or both of these markers.
[Average]. Learn more in
Meas Prese.
"Scale and Units" on page
"Average Type" on page
8-8.
8-29.
9-5