186 Chapter 2
Front-Panel Key Reference
SPAN X Scale
NOTE Sweep times that would require Option AYX are not available in zero
span if the Resolution Bandwidth is less than 1 kHz.
NOTE The minimum number of sweep points in zero span varies with
firmware revision:
NOTE Zero Span sets Signal Track (Off) and FREQUENCY, Scale Type to linear
mode.
Last Span Changes the analyzer frequency span to the previous span setting. If
pressed after Signal Track is turned off, the span setting returns to the
span that was in effect before
Signal Track was turned on. This is true,
even if
Signal Track was turned on as part of Span Zoom. The state of
Frequency, Scale Type Log Lin is included in the recalled information.
Key Access:
SPAN X Scale
Zone
Accesses menu keys that allow you to control the two-window zone
function. This function allows you to have an upper window with a
broad display of frequency and two zone markers (vertical bars) that
define the span for the lower window.
Key Access:
SPAN X Scale
Zone
On Off
Zone (On) allows you to change from a one-window to a
two-window display. The top window will display the
trace with two vertical lines (Zone Markers) displayed
at center frequency plus and minus 5% of the current
span. (You can change the default zone frequency and
zone span values using the
Zone Center and Zone Span
keys.) The top window will be inactive.
The bottom window will display the section of the trace
in the top window that is between the Zone Markers.
The span of the bottom window is 10% of the span of
the top window. (You can change the default zone
frequency and zone span values using the
Zone Center
and
Zone Span keys.) When first activated, both
windows have the same center frequency. The bottom
window is active and the sweep time, resolution
bandwidth, and video bandwidth have been coupled to
the bottom window span.
Firmware Revision Minimum # of Sweep Points in Zero Span
≤ A..03.03 401 (fixed)
A.04.xx 101
≥ A.05.00 2
To Next Page
Loading...
Need help?
General
