System Overview
R&S
®
SMBV100B
68
Getting Started 1423.1049.02 ─ 02
nal digital signals cannot be used simultaneously. The two blocks "Baseband"
and "BB Input" deactivate each other.
The "BB Input" block is the access point to the settings of:
●
The external digital I/Q signals
The external digital I/Q signals are further processed in the baseband section
●
The baseband offsets function
The external and internal baseband signals can be shifted in frequency and
phase, or boosted in power.
6.5
Additional White Gaussian Noise ("AWGN"
Block)
The "AWGN" block is displayed only in instruments equipped with the option
R&S
SMBVB-K62. This block controls the additional white Gaussian noise gener-
ator (AWGN). An additive white noise is required for measurements of mobile
radio base stations.
6.6
"I/Q Stream Mapper" Block
As one of the access points to the system configuration settings, the "I/Q Stream
Mapper" provides direct access for mapping the generated I/Q streams to the
available output connectors. That is, to the analog RF and I/Q output connectors.
6.7
I/Q Modulator ("I/Q Mod" Block)
The "I/Q Mod" block represent the I/Q modulator.
This functional block is the access point to:
●
The I/Q modulation of the internal baseband signal
●
The I/Q modulation of an external single-ended analog wideband signal
●
The analog I/Q impairments
I/Q Modulator ("I/Q Mod" Block)
