Monitoring Signal Characteristics
R&S
®
SMW200A
565User Manual 1175.6632.02 ─ 16
Figure 8-6: Power spectrum diagram of a 5 MHz LTE signal with enabled reference curve (blue)
"FFT points" = indicates the number of I/Q value pairs that are used for calculating a (part-)FFT
"AVG" = indicates the number of subspectra used for averaging
X-axis = frequency plotted symmetrically (- Sampling Rate/2 to +Sampling Rate/2)
Y-axis = power density
Signal acquisition points: see Table 8-2.
8.1.2.2 Signal Acquisition Points
Signal characteristics can be displayed using different methods and different acquisi-
tion points, also at the same time.
The following signal acquisition points are available:
●
Baseband signals
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Input streams of the "IQ Stream Mapper"
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Analog outputs ("RF A/B", "I/Q Out 1/2")
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Digital output streams of the "IQ Stream Mapper" ("BBMM 1/2")
The Figure 8-7 shows an example for locations of signal acquisition points.
Displaying Baseband Signal Characteristics in Real-Time