Use Limit Lines; Limit Lines; Marker Functions; All About Limit Lines - Keysight N9923A FieldFox User Manual

Peak A = Valid Peak (Above Threshold and Excursion Settings)
Peak B = Invalid Peak (Below 1 dB Excursion Setting)
Peak C = Invalid Peak (Below –10 dB Threshold Setting)

Marker Functions

Marker functions are used to change FieldFox frequency or distance settings to those
of the active marker.
How to use Marker Functions
 Activate the marker to move.
 Then press Mrk ->/Tools.
 Then choose one of the following:
The following applies to DTF Measurements ONLY:

All about Limit Lines

Limit lines are visual representations, drawn on the FieldFox screen, of the specified
limits for a measurement. With this capability, you can easily compare measured
data versus specifications. Optionally, you can enable an audible beep and display
Pass or Fail information for each measurement.
 You can have up to as many limit line segments as there are data points for each
118
(Not available in DTF mode) The center frequency of the
Mrk -> Center
o
measurement becomes the value of the active marker. The frequency span is
adjusted accordingly.
then
More Mkr -> Delay
o
marker becomes the electrical delay setting of the trace. Learn how to set group
delay format on page 26. Learn more about electrical delay on page 28.
then:
More
o
Marker=>Start Distance
o
value of the active marker. Markers that would no longer appear on the screen
are moved to the new Start Distance.
Marker=>Stop Distance
o
value of the active marker. Markers that would no longer appear on the screen
are moved to the new Stop Distance.
measurement trace allowing you to test all aspects of your measurements.
(NA mode ONLY) The group delay value of the active
The Start Distance of the measurement becomes the
The Stop Distance of the measurement becomes the
FieldFox User's Guide