Instrument Function
R&S
®
SMU200A
171Operating Manual 1007.9845.32 ─ 15
5.3.3.4 Eye Diagram
The eye diagram displays synchronized and superimposed sections of either the inphase
or quadrature components of the signal.
The display width (eye length) is set at 2 symbols; several hundred curve segments are
superimposed. The time (in the range -/+ 1 symbol) is plotted on the X axis, and the
amplitude scaled to the peak envelope power (PEP) is plotted on the Y axis (minimum
scaled amplitude = -1; maximum scaled amplitude = +1). The beginning of recording is
synchronous to the symbol and chip clock pulse. The recording depth is 2kSamples.
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
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