Rohde & Schwarz SMU200A - Signal Displays

Instrument Function
R&S
®
SMU200A
168Operating Manual 1007.9845.32 ─ 15
"Delete"
Deletes the curve highlighted in the display area.
Curves which are no longer required can be deleted to reduce the num-
ber of reference curves displayed simultaneously.
"Assign"
Defines the current curve as the reference curve.
The new reference curve is shown together with the entered comment
next to the selected color in the display area.
SCPI command:
n.a.
5.3.3 Signal Displays
All signal displays which are used for analyzing a baseband signal can be selected. A
number of signal displays are only available if the corresponding signal is generated, e.g.
Code Domain only available for (W)CDMA signals.
5.3.3.1 I/Q Diagram
The I/Q diagram displays the inphase component (i[t]) and quadrature component (q[t])
of the I/Q signal over time.
The diagram is displayed in a window with two separate coordinate systems. The coor-
dinate systems have identical X and Y axes. The time (in number of symbols, chips or
samples depending on the signal) is plotted on the X axes, and the amplitude scaled to
the peak envelope power (PEP) is plotted on the Y axes (minimum scaled amplitude =
-1; maximum scaled amplitude = +1). The recording depth is 1 kSamples.
This signal is picked off at the output of the baseband main module ("Impairment" function
block), i.e. contained in the displayed signal is:
●
impairment of the signal as defined by the user and the addition of noise.
●
Fading of the signal as defined by the user
●
an added external (Baseband Input)
●
an added internal signal (from the second path).
Graphical Display - Graphics