Adopt the Direct Digital Synthesizer (DDS) technology and provide stable, precise, pure and low distortion signals. 2.4 inch TFT Color LCD with 320Ã-240 resolution, displaying parameters and graphics of the two channels at the same time. The instrument uses 14-bit rapid D/A converter chip (5Vpp output quantization error is less than 1mV), 250MSa/s sample rate, 14bits vertical resolution. Can output up to 97 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), Triangular/Ramp, CMOS(0~12V), Four channels TTL, Exponential Rise, Exponential Fall, Noise, ECG, etc. Enable to store 64 arbitrary waveform data files, each one of waveform storage depth 8192x14bits; (The longer the waveform storage depth, the more detail the waveform is saved, and the signal details can be restored with high precision.)