About The Arb; Waveform Files Sources - R&S SGT100A User Manual

®
R&S SGT100A
The ARB generator requires option R&S SGT-K510.
7.1.2.1

About the ARB

This section provides background information on the ARB functionality and the impact
of the provided settings.
For a description of the multi-carrier and multi-segment wave functions, refer to:
●
Chapter 7.1.2.4, "Multi-Carrier
●
Chapter 7.1.2.3, "Multi-Segment

Waveform Files Sources

In ARB mode, the R&S SGT uses ARB waveform files to obtain the digital I/Q data of
the baseband signal. The R&S SGT can replay any waveform file stored on its solid-
state drive (SSD) but it can also generate and replay simple waveforms for test purpo-
ses.
A waveform is a file with specified file format containing raw IQ samples. The IQ values
are calculated in advance and stored as waveform files with a predefined extension
*.wv. When created by the R&S SGT, the instrument inserts a tagged waveform
header at the beginning of each created ARB file. For more information, refer to
ter 12, "Waveform and List
Depending on whether the R&S SGT creates the waveform files itself or not, two wave-
form files sources can be distinguished:
●
Internally generated waveforms
The ARB generator enables the calculation and the generation of multi-segment
and multi-carrier waveform files as well as the built-in function to create a test
waveform (e.g. a sine or rectangle signal) and keep it as a file or in the RAM.
●
Externally generated waveforms
The ARB can also process externally generated waveform files. For example: the
waveform files generated on a PC by the Windows software package R&S WinIQ-
SIM2, the software R&S ARB Toolbox, the R&S Pulse Sequencer software or sig-
nals calculated using a mathematical program such as Matlab.
Generation of waveform files and their transfer from R&S WinIQSIM2 or
R&S Pulse Sequencer to the R&S SGT is menu-guided.
For more information, see the R&S WinIQSIM2 user manual and the
R&S Pulse Sequencer user manual.
The externally generated waveform files can be loaded into the instrument via one
of the available interfaces (USB, LAN or PCIe). For a detailed description, see
Chapter 9.5, "How to Load and Play Waveform
Types of required software options
Two types of software options are relevant in this context:
●
R&S SGT-K2xx/-K4xx:
These options are required to process a waveform file generated with R&S WinIQ-
SIM2.
Multi-segment waveform files require the options for all included digital standards.
User Manual 1176.8674.02 ─ 07
Waveforms", on page 93
Waveforms",
Format", on page 502.
Signal Generator Settings
on page 83
Files", on page 269.
Baseband
Chap-
78