User`s guide
94 N9320A Spectrum Analyzer
4 Key Reference
Off Turns off the selected marker by the Select Marker  key. Off 
also turns off the related functions such as signal track. It 
also removes marker annotation from the display.
Key access: 
Use the data control keys to position the delta 
marker. Annotation in the active function block 
and in the upper- right corner indicates the 
frequency/time and amplitude differences 
between the two markers. Delta (Off) moves the 
reference marker to the active marker position, 
allowing you to make delta measurement from 
differing reference points without having to turn 
off the markers and begin again.
Key access: 
 > Delta
Delta Pair
Ref Delta
Toggles the Delta Pair between the reference 
(start) and delta (stop) markers. The start 
marker number is indicated with a number and 
an R above the marker (for example, 1R) and the 
delta marker is indicated with a marker number. 
Key access: 
 > Delta
Span Pair
Span Center
Toggles the Span Pair function between the span 
and center markers. The start marker number is 
indicated with a number and an R above the 
marker (such as 1R) and the stop marker is 
indicated with a marker number. Adjusting the 
span changes the frequency difference between 
the two markers while maintaining the midpoint 
between the two markers at a fixed frequency. 
Changing the center changes the center point 
between the two markers while maintaining the 
frequency difference.
Key access: 
 > Delta
Marker
Marker
Marker
NOTE
Ref and Delta markers maintain their displayed x-axis location, but not 
their frequency values when you change a parameter that redefines 
the x-axis scale. Reset these markers when parameters such as Span 
or Center Freq are changed.
Marker










