Chapter 6 6-19
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.
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). The display line turns off when in demod view (Det/Demod,
Demod, Demod View (On) and turns back on when demod view is turned
off.
Limits Accesses menu keys that allow you to create, modify, and change the
properties of limit lines.
Properties Accesses the following Properties menu keys:
X Axis Units Freq Time
Selects whether limit lines will be entered using
frequency or sweep time to define the segments. They
can be specified as a table of limit line segments of
amplitude versus frequency, or of amplitude versus
time. Time values are evaluated with respect to the
analyzer sweep time. A time value of zero corresponds
to the start of the sweep, which is at the left edge of the
graticule.
Switching the limit line definition between frequency
and time will erase both of the current limit lines. The
message Changing X axis units will delete all
limits. If you are sure, press key again to
change units will appear. Press
X Axis Units Freq Time
again to purge both limit lines and switch between
frequency and time.
Key Access:
Display, Limits, Properties
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