Keysight N9912A User Manual page 104

How to Restart the Spectrogram
Press Sweep 3 then
Averaging
Averaging can be enabled on the underlying measurement. Press Meas 4 then
Average
Common Settings for Waterfall and Spectrogram
Set Red and Blue Limits
The colors displayed on the Waterfall and Spectrogram represent the various
measured power levels:
 Red = Highest power levels
 Blue = Lowest power levels
NOTE: The full Red-to-Blue color spectrum is visible only with Indoor display colors. Learn
more on page 173.
Adjust the Red and Blue limits to the power levels that you expect to measure.
The Blue limit must always be less than the Red limit.
 Press Meas Setup 4.
 Then
 Then choose from the following:
Time Markers
Use Time Markers to determine the elapsed time between any two displayed records.
NOTE: Spectrogram displays the most recent record at the top of the screen. Waterfall
displays the most recent record at the bottom.
To create Time Markers:
 Press Meas Setup 4
 Then
 Then
 Then enter a value from 0 (the most recent sweep record) to the maximum value,
 Then
 Then enter a value from 0 (the most recent sweep record) to the maximum value,
 At the current sweep speed, the difference in time between these two markers
104
Restart
Type. Learn more on page 87.
Spectrogram / Waterfall Settings
Using the ▲|▼ arrows , rotary knob, or keypad, select the HIGHEST
Red Limit
o
power level that you expect to measure. This power level, and those measured
higher than this level, appear Red.
Using the ▲|▼ arrows , rotary knob, or keypad, select the
Blue Limit
o
LOWEST power levels that you expect to measure. This power level, and those
measured lower than this level, appear Blue.
Time Markers
Time
using the numeric keypad, ▲|▼ arrows, or the rotary knob. A
Time Marker.
Delta
using the numeric keypad, ▲|▼ arrows, or the rotary knob. A
Delta Marker.
appears at the upper-right corner of the view as
indicates the

indicates the
 
Delta Time: hh:mm:ss Sec.
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