Concepts and features
R&S
®
ZNA
101
User Manual 1178.6462.02 ─ 20
4.2.1.3
Markers
Markers are tools for numerical readout of measured data and for selecting points on
the trace, or, in general, in the diagram area. A marker is displayed with a symbol (e.g.
a triangle, a crossbar or a line) on the trace, which can be a data trace or a memory
trace. At the same time, the coordinates are displayed in a marker info field or in a
table. Each marker can be defined as a normal marker (M), reference marker (R), or
delta marker (
Δ
M).
●
A normal marker ("M1, M2...") determines the coordinates of a measurement point
on the trace.
●
The reference marker ("R") defines the reference value for all delta markers.
●
A delta marker ("DeltaM1, DeltaM2...") indicates the coordinates relative to the ref-
erence marker.
A special set of markers M1 to M4 is provided for bandfilter search mode.
The most common tasks to be performed with markers can be achieved using the
"Marker" menu functions:
●
Determine the coordinates of a measurement point on the trace. In polar diagrams
where no x-axis is displayed, markers can be used to retrieve the stimulus value of
specific points.
●
Determine the difference between two trace points or the relative measurement
result ("Delta Mode").
●
Convert a complex measurement result into other formats.
Markers also play an important role in performing the following advanced tasks:
●
Change the sweep range and the diagram scale ("Marker Function").
●
Search for specific points on the trace ("Marker Search", "Target Search", "Bandfil-
ter").
Activating and moving markers
To activate a marker, either select the marker symbol itself or the corresponding line in
the marker info field.
To move the active marker on the trace, use one of the following methods:
●
Drag the marker symbol to the desired position (Cartesian diagrams only).
●
Activate the "Markers" tab of the "Marker" softtool (Trace – [Marker]) and enter the
related stimulus value numerically.
●
Use the functions on the "Marker Search" softtool tab to move the marker to a spe-
cific position.
Screen elements