Rigol Function / Arbitrary Waveform generator uses Direct Digital Frequency Synthesis (DDS) technology to generate high accuracy and high stability waveforms. It can also generate programmable pulse signals as well as the standard wave functions. Additionally, the arbitrary waveform feature allows engineers to generate any desired waveform with UltraWave, our free waveform editing software. Actual signals can also be captured through an oscilloscope, then downloaded to a signal generator for output. The digital sampling technology and the Direct Digital Frequency Synthesis technology enable engineers to build any required waveforms for circuit design verification.