System Overview
R&S
®
SMW200A
87Getting Started 1412.9220.02 ─ 21
●
The signal routing (in the standard "classic" mode of a standard baseband
generator)
Signals from the baseband generators can be routed between the available
paths, and added (possibly with frequency, phase and power offsets).
7.1.3 Digital Baseband Input and Output ("BB Input" and "I/Q
Digital" Blocks)
The "BB Input" and the "I/Q Digital" blocks are the access point to the settings of
the digital interfaces.
The R&S SMW is - depending on SW and HW options - able to receive digital
baseband signals and to output digital baseband signals. A fully equipped stan-
dard baseband instrument provides eight configurable digital interfaces. Depend-
ing on the configuration, the available digital interfaces may be used as up to six
inputs or up to six outputs.
The digital baseband inputs and outputs can be used together with other
Rohde&Schwarz instruments, like signal generators, signal analyzers, the digital
interface module R&S
®
EX-IQ-BOX, or the R&S
®
CMW500 Radio Communication
Tester. A Rohde&Schwarz signal generator for instance may serve as digital sig-
nal source in test configuration requiring more than two baseband sources. A test
setup with the R&S
®
CMW500 Radio Communication Tester is suitable for testing
under fading conditions.
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
(e.g. fading, addition of noise)
●
The signal routing (in the standard "classic" mode)
The external and internal baseband signals can be routed and added (possi-
bly with frequency, phase and power offsets).
The "I/Q Digital" block is the access point to the settings of:
●
The digital I/Q output signals
●
The digital I/Q impairments
Brief Introduction to the Instrument's Concept
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