6-80 Chapter6
Front-Panel Key Reference
SPAN X Scale
Pressing Zone (Off) will return you to a one-window
display of the active window. Key Access:
SPAN X Scale,
Zone
NOTE Pressing Zoom will set Zone (On), if it is off.
Zone Center Allows you to change the frequency of the zone markers
without changing the zone span. The zone markers are
vertical lines marking the zone in the upper window.
They determine the frequency range displayed in the
lower window. As the zone markers in the upper
window are moved, the center frequency of the lower
window is changed but the lower window will not be
updated to reflect the change unless it is selected as the
active window. (See
Zone On Off.)
The center frequency for the lower window is not
limited by the selected start and stop frequencies in the
upper window. However, if the frequency span of the
lower window is outside of the span for the upper
window, the vertical span markers will not be
displayed. When the lower window is active, the
FREQUENCY Channel key will allow you to change Zone
Center. Any change to the lower window while it is
active will change the center frequency. Key Access:
SPAN X Scale, Zone
Zone Span Allows the span of the zone markers to be changed
without changing the center frequency. The zone
markers are vertical lines marking the zone in the
upper window. They determine the frequency range
displayed in the lower window. As the zone markers are
moved, the spanof the lower window is changed but the
lower window will not be updated to reflect the change
unless it is selected as the active window. (See
Zone On
Off.)
The span limit of the lower window is the same as the
span limit of the instrument. The span for the lower
window is not limited to the selected span of the upper
window. However, if the frequency span of the lower
window is outside of the span of the upper window, the
vertical span markers will not be displayed. When the
lower window is active, the
SPAN X Scale key will
change
Zone Span, and any change to Zone Span while
the lower window is active, will change the span. Key
Access:
SPAN X Scale, Zone
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