Reference point and certain point on the trace. When selected, a
pair of markers appears on the trace, which are the Reference
Marker and the Delta Marker.
Key points:
⚫ If a single marker already exists, the reference marker will be
activated at the position of current marker.
If no marker is active at the present, the reference marker and
delta marker will appear at the center frequency location.
⚫ The location of the Reference Marker is fixed (both in the X-axis
and the Y-axis), while the Delta Marker is active. You can use
the knob, touch screen, or the numeric keys to move the delta
marker.
⚫ The frequency (or time) and amplitude differences between the
two markers will show in the active area and in the upper right
corner of the display. The displayed amplitude difference is
expressed in dB, or is the linear unit in terms of the
corresponding scale.
⚫ If [Delta] has been activated, press [Delta] again to move the
reference marker to the active delta marker position.
⚫ Two ways to enable a certain point as a reference marker:
a) Open a Normal marker and locate it onto a point and then
switch the marker type into "Delta", creating a new reference,
then you can modify the location of the delta marker to achieve
the delta measurement.
b) Open a Delta Marker and place the delta marker onto a point,
then press [Delta] again to locate the reference marker to this
point, then you can modify the location of the delta point to
achieve the delta measurement.
5.6.1.5 [Off]
Turn off the selected markers.
5.6.1.6 [All Off]
Turns off all the opened markers and the related functions. The
marker won’t show again.
5.6.1.7 [Marker Table On Off]
Turns on or off the display of the marker table.
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