Rohde & Schwarz SMBV100B - 3 Configuring the Internal Baseband Source

Configuring the Internal Baseband Source
R&S
®
SMBV100B
85User Manual 1178.4460.02 ─ 03
3 Configuring the Internal Baseband Source
The R&S SMBV100B is a vector signal generator with internal signal generation and
real-time functionality and with integrated arbitrary waveform generator.
The instrument enables you to generate various digital modulation signals in accord-
ance with the definitions in the corresponding specifications or with user-definable
characteristics. Signals are generated in realtime or played from a data store with
external and internal data. The instrument provides an interface for the loading of
externally computed modulation signals in form of waveform files.
3.1 Overview of the Signal Generation Modes
The R&S SMBV100B can generate the signal in the following ways:
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Generating digital modulated signals according to various digital standards
●
Generating a real-time signal
●
Playing a waveform
Generating digital modulated signals according to various digital standards
Provided the instrument is equipped with the required firmware options, the instrument
can generate digital standards in accordance with the corresponding specifications.
The required options are specified in the description of the respective digital standard
(see the corresponding user manual).
See also Chapter 3.3, "Generating Signals According to Digital Standards",
on page 87.
Generating a real-time signal
●
While utilizing the internal signal generator, the R&S SMBV100B generates the dig-
ital modulation signals with user-definable characteristics in real time.
See also Chapter 3.5, "Generating Custom Digital Modulated Signals",
on page 116.
●
If the required options are installed, externally supplied real-time baseband signals
can be added to the internally generated signals.
See also Chapter 8.6, "Digital Baseband Input Settings", on page 455.
Playing a waveform
The R&S SMBV100B is equipped with an Arbitrary Waveform Generator (ARB) used to
generate test signals and to process waveform files. Waveforms are files with settings
provided for repeatable tests with the same test signal. Irrespectively of the way these
waveform files are generated, they are always played from the instrument. That is, the
signal calculation is performed in advance and the instrument reacts as a player.
●
Externally computed waveform files can be loaded in the instrument over the LAN,
USB, or the GPIB interface.
Overview of the Signal Generation Modes