6-78 Chapter6
Front-Panel Key Reference
SPAN X Scale
SPAN X Scale
Activates the Span function and accesses the menu of span functions.
Pressing
SPAN X Scale allows the user 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, divide the frequency span by 10.
Span Zoom Finds the highest signal peak on the display. If a marker is not already
on the peak, it places a marker there, turns on the signal-track
function, and activates the span function. The analyzer then reduces
the span in steps, keeping the signal centered on the screen until the
optimum 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 leaves the analyzer in Signal Track mode.
NOTE Span Zoom is not available when Segmented (On) is selected.
Full Span Changes the analyzer span to full span showing the full frequency
range of the analyzer. Full span sets
Signal Track (Off) and Segmented
(Off).
Zero Span Changes the frequency span to zero. In this mode, the current center
frequency is displayed in the time domain (the x-axis is displayed in
units of time), like a conventional oscilloscope.
Sweep times faster than those in the frequency domain display mode
are available if Option AYX or B7D are installed.
Resolution Bandwidths less than 1 kHz are unavailable when in zero
span if the sweep time is being achieved by utilizing the Option AYX or
B7D.
NOTE The minimum number of sweep points in zero span is 2.
NOTE Sweep times that would require the Option AYX or Option B7D are not
available in zero span if the Resolution Bandwidth is less than 1 kHz.
NOTE Zero Span sets Signal Track (Off).
To Next Page
Loading...
Need help?
General
