Monitoring Signal Characteristics
R&S
®
SMBV100B
412User Manual 1178.4460.02 ─ 03
Signal acquisition points: See Table 7-2.
Power Spectrum
The power spectrum displays the signal spectrum which is calculated from the I/Q sig-
nal with fast Fourier transform (FFT). The power density over frequency is displayed.
Figure 7-6: 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 7-2.
7.1.2.2 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
●
Input streams of the "IQ Stream Mapper"
●
Analog outputs
The Figure 7-7 shows an example for locations of signal acquisition points.
Displaying Baseband Signal Characteristics in Real-Time
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