Adopt the Direct Digital Synthesizer (DDS) technology and provide stable, precise, pure and low distortion signals. Desktop design with ABS plastic housing, AC 100 - 240V (AC) wide voltage supply; 2.4 inch TFT Color LCD with 320x240 resolution, displaying parameters and graphics of the two channels at the same time. The instrument uses 14-bit high-speed D/A converter chip (5Vpp output quantization error is less than 1mV), 250MSa/s sample rate, 14bits vertical resolution. Fully independent dual-channel output (equivalent to two independent signal sources), able to work synchronously, and the phase difference can be accurately adjusted;