Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 247 / 813

R&S
®
ZVA/ZVB/ZVT Trace Menu
1145.1084.12 4.85 E-6
•
The Real added constant shifts a real trace in vertical direction, leaving the imaginary part
unchanged.
•
The Imaginary added constant shifts a imaginary trace in vertical direction, leaving the real part
unchanged.
Shifting the trace by means of constant values is a simple case of trace mathematics. Use the
Define Math dialog to define more complicated mathematical operations.
Remote
control:
DISPlay:WINDow<Wnd>:TRACe<WndTr>:Y:OFFset <Magnitude>[, <Phase>,
<Real>, <Imag>]
Marker
The functions in the Marker menu are used to position markers on a trace, configure their properties
and select the format of the numerical readout.
Markers
Markers are tools for selecting points on the trace and for numerical readout of measured data. A
marker is displayed with a symbol (a triangle, a crossbar or a line) on the trace, which may 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, reference marker, delta marker or discrete
marker.
Marker types
•
A (normal) marker (Mkr 1, Mkr 2, ...) determines the coordinates of a measurement point on the
trace. Up to 10 different normal markers can be assigned to a trace.
•
A reference marker (Ref) defines the reference value for all delta markers.
•
A delta marker ( ) indicates the coordinates relative to the reference marker.
•
The stimulus value of a discrete marker always coincides with a sweep point.
A special set of markers Mk1 to Mkr4 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 Funct. ).
•
Search for specific points on the trace ( Search ).