Configuring the internal baseband source
R&S
®
SMM100A
257
User Manual 1179.1341.02 ─ 05
Parameter
Value
Source
Internal
Multichannel Setup
Start Carrier
0
Stop Carrier
0
State
on
Power
0 dB
Power Step
0 dB
Initial Phase
0°
Phase Step
0°
Channel Setup
State
ON
Phase
0°
Power
0 dB
4.12
Shifting and boosting the baseband signal
The R&S
SMM100A provides settings to frequency offset the internally generated and
externally supplied baseband signal.
4.12.1
About baseband offsets
The applied baseband frequency and phase offset and path gain affect the signal on
the output of the corresponding block, "Baseband" or "BB Input". The shifting of the
central frequency of the baseband signal is one of the tasks of the resampler.
4.12.1.1
Impact of the frequency offset
For some applications, it is helpful to shift the baseband signal with a user-defined
baseband frequency offset to a different center frequency to improve signal character-
istics.
The frequency offset function shifts the center frequency of the wanted baseband sig-
nal. The function also provides a quick way to shift the used frequency band in the RF
frequency domain without modifying the RF settings.
See
Chapter 4.12.3, "How to improve signal characteristics by shifting the baseband
Shifting and boosting the baseband signal
