Concepts and Features
R&S
®
ZNC
28
User Manual 1173.9557.02 ─ 13
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A (normal) marker ("M1, M2 ...") determines the coordinates of a measurement point
on the trace. Up to 10 different normal markers can be assigned to a trace.
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The reference marker ("R") defines the reference value for all delta markers.
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A delta marker ("ΔM1, ΔM2 ...") indicates the coordinates relative to the reference
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:
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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.
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Determine the difference between two trace points or the relative measurement result
("Delta Mode").
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Convert a complex measurement result into other formats.
Markers also play an important role in performing the following advanced tasks:
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Change the sweep range and the diagram scale ("Marker Function").
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Search for specific points on the trace ("Marker Search", "Target Search", "Bandfilter
Search").
Activating and Moving Markers
To select one of several markers as an active marker, do one of the following:
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Tap the marker symbol.
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Tap the marker line in the marker info field.
To change the position of the active marker on the trace use one of the following methods:
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Drag-and-drop the marker symbol to the desired position.
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Tap the "Marker <n>" or "Ref. Marker" softkey to call up the entry bar for the new
stimulus value.
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Tap and hold the diagram or select "Mkr. Properties" to call up the "Marker Proper-
ties" dialog and select the new stimulus value.
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Use the "Search" functions to place the marker to a specific point on the trace.
If the marker position is defined explicitly by entering a numeric value, the marker position
can be outside the sweep range. If it is just varied using the rollkey, the mouse or the
cursor keys, it always remains within the sweep range. If the position of a marker outside
the sweep range is varied, it is automatically moved to the start or stop value of the sweep
range, whichever is closer.
Marker Info Field
The coordinates of all markers defined in a diagram can be displayed in the info field,
which by default is located in the upper right corner.
Screen Elements