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The DG4000 series is a dual channel arbitrary waveform generator which can create basic and complex signals.
Overview of the DSA800 Series Spectrum Analyzer
Basic Signal Testing with a DSA800 Series Spectrum Analyzer
Getting started with your Rigol DSA800
Rigol DG4000 - Creating a Basic Waveform
Advanced Analysis Capabilities of the MSO5000, DS7000 and MSO8000
RIGOL's DS7000 series Digital Oscilloscopes