Adopt the Direct Digital Synthesizer (DDS) technology and provide stable, precise, pure and low distortion signals. 2.4 inch TFT Color LCD with 320×240 resolution, displaying parameters and graphics of the three 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. Independent three-channel output (equivalent to three independent signal sources) can work synchronously and the phase difference can be adjusted accurately. Can output up to 100 groups of functions / arbitrary waveform, contains 33 groups of preset waveforms and 64 groups of user-defined waveforms. Preset waveforms: Sine, Square (Duty Cycle adjustable), Pulse (Pulse width and cycle time can be set accurately), Triangle/Ramp, CMOS(0~12V), Exponential Rise, Exponential Fall, Noise, ECG, DC etc. With channel tracking function, all parameters of the three channels can be updated according to user's configuration at the same time when the tracking is opened. Enable to store 64 arbitrary waveform data files, each one of waveform storage depth 8192 points * 14bits. Sweep Function: It can sweep 4 properties of signals including frequency, amplitude, offset and duty cycle; It has Linear and Logarithm two sweep types; 0.01S~999.99S sweep time; Up, Down and roundtrip sweep directions. Save function: It can save 12 sets user-set parameters and can be loaded at any time. Communicating function: All functions can be controlled by PC program and the communication protocol is open for secondary development.