RIGOL
Chapter 5 Functions of the Front Panel of VSA
5-36 RSA3000E User Guide
Selected Marker
RSA3000E provides 8 markers. By default, Marker1 is selected under "Selected
Marker". After you select a marker, you can set parameters such as the marker mode
and the marker trace. The currently enabled marker will be marked on the trace
selected under Marker Trace. The readout of the currently activated marker at the
marker point will be displayed in the measurement result bar at the upper-left corner
of the screen.
Marker Mode
Sets the type of the marker. The available marker modes include Position, Delta,
Fixed, and Off.
1.
Position
It is used to measure the X (Frequency or Time) and Y (Amplitude) values of a
certain point on the trace. When "Position" is selected, a marker indicated by a
number ("1") appears on the trace.
Remarks:
If no active marker exists currently, a marker will be enabled at the X-axis
reference value of the current trace.
The readout resolution of the X-axis is related to the currently set X-axis
width. To obtain a higher readout resolution, reduce the width.
2.
Delta
It is used to measure the difference between "reference point" and "certain
point on the trace": X (frequency or time) and Y (amplitude) value. When
"Delta" is selected, a pair of markers appears on the trace: Reference Marker
(marked by "X") and the Delta Marker
(m arked by "△").
Remarks:
If an active marker exists currently, then activate a reference marker at the
current marker; otherwise activate both the reference marker and Delta
marker at the same time at the X-axis reference value.
When you change the position of the Delta marker, the position of the
reference marker remains unchanged, but the frequency (or time)
difference between the two markers will change along with it.
The frequency (or time) difference between the two markers and the
amplitude difference between them are displayed in the measurement
result bar at the upper-left corner of the screen.
3.
Fixed
When you select "Fixed" marker, you can directly or indirectly set the X-axis and
Y-axis values for the marker. Once specified, its position remains unchanged,