Keysight Technologies N9321C, User Manual

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119
Key Reference
Marker
Delta activates a second marker at the position of the first
marker. If no marker is present, two markers with the same
identification number will appear at the center of the display. The
marker number is indicated above the delta marker, and the same
number is indicated with an
R
(for example,
1R
) above the reference
marker. The amplitude and frequency (or time) of the first marker is
fixed. Use the data control keys to position the delta marker.
Annotation in the active function block and in the upper-right
corner indicates the differences between the two markers,
frequency/time and amplitude.
Key access:
Marker > Mode > Delta
Delta Pair
Toggles the
Delta Pair
between the reference (start) and
delta (stop) markers. The start marker number is indicated with a
number and an
R
(reference) above the marker (for example,
1R
).
The delta marker is identified with the marker number only.
Key access:
Marker > Mode > Delta Pair
Span Pair Toggles the
Span Pair
function between the span and
center markers. The start marker number is indicated with a
number and an
R
above the marker (such as
1R
) and the stop
marker is indicated with only the marker number. Adjusting the
span changes the frequency difference between the two markers
while maintaining the midpoint at a fixed frequency. Selecting
Center
changes the center point between the two markers while
maintaining the frequency difference.
Key access:
Marker > Mode > Span Pair
Off
Turns off the active function markers.
Key access:
Marker
>
Mode > Off
NOTE
Ref and Delta markers maintain their displayed x-axis location. But,
the frequency values will change if the frequency or span
parameters define the x-axis scale are changed. Reset these
markers, if necessary, when parameters such as span or center freq
are changed.