Instructions

Chapter 2 Functions of the Front Panel of GPSA RIGOL
RSA3000E User Guide 2-69
Application of the "Delta" Marker
It is used to measure the S/N ratio of the single spectrum signal.
Move the reference marker to the location where the signal resides, and move
the Delta marker to the location where the noise resides. The amplitude
displayed in the measurement results is S/N ratio.
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,
and its Y-axis value does not change along with the trace. The fixed marker is
generally used as the reference marker for the Delta marker. It is indicated by
the sign "X".
4. Off
Turns off the marker currently selected. Then, the marker information displayed
in the screen and the functions concerning the marker will also be disabled.
Reference Marker
Sets the reference marker for the current marker. By default, the reference marker is
the marker next to it.
Remarks:
 Each marker can have another marker to be its reference marker.
 If the current marker is a Delta marker, the measurement result of the marker
will be determined by the reference marker.
 Any marker cannot take itself to be the reference marker.
Marker Trace
Selects the trace that the current marker marks. It can be Trace1, Trace2, Trace3,
Trace4, Trace5, or Trace6. One marker can only mark one trace. The selected trace
determines the position of the marker, the readout unit of the marker, and the final
readout results.
Marker Trace Auto
Enables or disables the auto marking trace function.
Remarks:
 When you enable the marker's auto marking trace function, the marker shifts
from its off state to on state, and the marker's marking trace is automatically