Chapter 2 87
Front-Panel Key Reference
Display
Display
Accesses menu keys that allow you to control what is displayed on the 
analyzer, including titles, the display line
, graticule and annotation, as 
well as the testing of trace data against user entered limits. 
Full Screen Allows the measurement window to expand horizontally over the entire 
instrument display. Pressing a key that brings up a new menu will 
cancel the full screen function. 
Key Access: 
Display 
Display Line 
On Off
Activates an adjustable horizontal line that is used as a visual reference 
line. The line, which can be used for trace arithmetic, has amplitude 
values that correspond to its vertical position when compared to the 
reference level. The value of the display line appears in the active 
function block and on the left side of the display. The display line can be 
adjusted using the step keys, knob, or numeric keypad. Pressing any 
digit, 0 through 9, on the numeric keypad brings up the selected 
terminator menu. To deactivate the display line, press 
Display Line (Off). 
Key Access: 
Display 
Limits Accesses menu keys that allow you to create and define the parameters 
of limit lines.
Key Access: 
Display 
Limit 1
Limit 2
  Allows you to select either of the two available limits. 
The 
Limit 1 and Limit 2 keys access menu keys that allow 
you to set parameters for the selected limit.
Key Access: 
Display, Limits
Type 
Upper Lower
  Allows you to define the limit you are 
editing as either an upper or lower 
limit. An upper limit fails if the trace 
exceeds the limit. A lower limit fails if 
the trace falls below the limit. 
Key Access: 
Display, Limits, Limit 1 or 
Limit 2
Limit On Off
  Turns the limit line display on and off. 
Either 
Limit or Margin, as well as Test, 
must be turned on for a limit test to 
work.
Key Access: 
Display, Limits, Limit 1 or 
Limit 2