Chapter 2 185
Front-Panel Key Reference
SPAN X Scale
SPAN X Scale
NOTE If Power Stat CCDF is selected in the MEASURE menu, see “SPAN X Scale
(CCDF)” on page 190 for
Span X Scale key descriptions.
If
Spectrum Emission Mask is selected in the MEASURE menu, see “SPAN
X Scale (Spectrum Emission Mask)” on page 191 for
Span X Scale key
descriptions.
Activates the
Span function and accesses the menu of span functions.
Pressing
SPAN X Scale allows you to change the frequency range
symmetrically about the center frequency. The frequency-span readout
describes the total displayed frequency range. To determine frequency
span per horizontal graticule division (when the frequency scale type is
set to linear), divide the frequency span by 10.
Span Allows you to enter a span frequency range value.
Key Access:
SPAN X Scale
Span Zoom
Performs an automatic zoom so that the signal at the marker remains
at the center of the display. If a marker is already on, the zoom begins
at the frequency of the marker. If a marker is not already on, a marker
is placed on the highest on-screen signal (ignoring the LO feedthrough).
Signal-track is turned on, and the span function is activated. Entering a
new span value causes the analyzer to change the span in steps,
keeping the signal centered on the screen until the desired span is
reached. The analyzer is left in Signal Track mode. Pressing
Span Zoom
performs the routine similar to pressing the following keys:
Search,
Frequency, Signal Track (On), and Span.
NOTE Span Zoom is not available when the Frequency, Scale Type (Log) is
selected.
NOTE Span Zoom leaves the analyzer in Signal Track mode.
NOTE Span Zoom is not available when Segmented (On) is selected.
Key Access:
SPAN X Scale
Full Span
Changes the analyzer span to full span showing the full frequency
range of the analyzer. In external mixing mode, pressing
Full Span
changes the analyzer span to the specified range for the selected
external mixing band. Full span sets
Signal Track (Off) and
Segmented (Off).
Key Access:
SPAN X Scale
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