Rohde & Schwarz R&S RTB2004 - XY-Diagram

Applications
R&S
®
RTB2000
124User Manual 1333.1611.02 ─ 04
Remote command:
SPECtrum:FREQuency:STARt on page 331
Stop
Defines the stop frequency of the displayed frequency span.
Remote command:
SPECtrum:FREQuency:STOP on page 331
Center
Defines the frequency in the center of the displayed span.
To set the center frequency, you can also use the Position keys.
Remote command:
SPECtrum:FREQuency:CENTer on page 330
Span
The span is specified in Hertz and defines the width of the displayed frequency range,
which is (Center - Span/2) to (Center + Span/2). The position of the span is defined
using the Center setting.
Remote command:
SPECtrum:FREQuency:SPAN on page 331
RBW
The resolution bandwidth (RBW) determines the resolution of the spectrum, that is: the
minimum distance between two distinguishable peaks. The higher the resolution (the
smaller the ratio), the more peaks are detected, but the longer the measurement
requires to finish.
Remote command:
SPECtrum:FREQuency:BANDwidth[:RESolution][:VALue] on page 331
8.3 XY-Diagram
XY-diagrams combine the voltage levels of two waveforms in one diagram. They use
the amplitude of a second waveform as the x-axis, rather than a timebase. Thus, you
can measure phase shift, for example. With harmonically related signals, the resulting
XY-diagrams are Lissajous patterns. XY-diagrams can also be used to display the IQ
representation of a signal.
Together with the XY-diagram, the time diagrams of the source signals are displayed in
separate grids. It is also possible to define two source signals in y-direction for compar-
ison.
1.
Press the
APPS SELECTION key.
2. Select "XY".
3. Make sure that the signals, the trigger, and the acquisition are set up correctly. The
required menus are available in XY-mode.
XY-Diagram