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5.Menu Interpretation
53
One of the marker types, which is used to measure the values of
X (Frequency or Time) or Y (Amplitude) at certain point of the
trace. When selected, a marker will appear with its own digital ID
such as "1" on the trace.
Key points:
⚫ If no active marker exists currently, a one will be enabled
automatically at the center frequency of current trace.
⚫ You can use the knob, direction keys or numeric keys to move
the marker. The readouts of the marker will be displayed on the
upper right of the screen.
⚫ The readout resolution of the X-axis corresponds to the span
and sweep points. For higher resolution, add sweep points or
reduce the span.
5.14.4 [Delta]
One of the marker types, which is used to measure the delta
values of X (Frequency or Time) and Y (Amplitude) between the
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. Will be in the active area and the
display area of the upper right corner, showing the amplitude delta
value between the two markers and frequency difference. If a
single marker already exists, [Delta] will place a static marker and
an active marker to the original position and a single marker
position. Use the knob, step key, or number keys to move the
marker. If there are two markers, press [Delta] directly. However, if
[Delta] has been activated, press [Delta] to place the still frequency
scale to the active marker. The displayed amplitude difference is
expressed in dB, or is the linear unit in terms of the corresponding
scale.
Key points:
⚫ The Reference Marker will be activated at the position of current
marker, or else both the reference marker and Delta Marker will
be simultaneously activated at the center frequency location if no
marker is active at the present.
⚫ The location of the Reference Marker is always fixed (both in the
X-axis and the Y-axis), while the Delta Marker is active. You can
use the numeric keys, knob or direction keys to change the
location of Delta Marker.
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