R&S SMJ100A, Руководство по эксплуатации

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Instrument Function
R&S
®
SMJ100A
174 Operating Manual 1403.7458.32 ─ 14
Each reference curve is available until it is deleted.
"Display area" The comments entered for the defined reference curve are shown in
the display area next the assigned color. A maximum of five colors
(and reference curves) are available. If no reference curve is
assigned to a particular color, the comment <empty> is displayed.
"Comment" Enters a comment for the current curve which is to be defined as the
reference curve. This comment then appears next to the highlighted
color in the display area.
"Delete" Deletes the curve highlighted in the display area.
Curves which are no longer required can be deleted to reduce the
number of reference curves displayed simultaneously.
"Assign" Defines the current curve as the reference curve.
The new reference curve is shown together with the entered com-
ment next to the selected color in the display area.
Remote 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" func-
tion block), i.e. contained in the displayed signal is:
●
impairment of the signal as defined by the user and the addition of noise.
Graphical Display - Graphics