Rigol dg1022 function generator frequency generator rigol dg1022 the dg1022 is a dual channel function arbitrary waveform generator and frequency counter dds technology provides stable low distortion high precision signals the combination of features performance and ease of use make this instrument a perfect solution for a wide range of applications the waveform generator produces five basic waveforms sine square ramp pulse and white noise as well as 48 built in arbitrary waveform