The double arbitrary waveform generator PROMAX GF-857B uses DDS technology (Digital Direct Synthesis) to provide two programmable signals that are displayed in a 4 inches color LCD screen. All basic waveform are pre-programmed (it includes 5 preprogrammed waveforms).
...The PROMAX GF-856 arbitrary waveform generator uses DDS (Digital Direct Synthesis) technology to offer two programmable signals with a sampling frequency of up to 125 MS/s, a 14 bits vertical resolution and a 1 µHz frequency resolution. All basic waveforms are pre-programmed...