Adopt the Direct Digital Synthesizer (DDS) technology and provide stable, precise, pure and low distortion signals. 2.4 inch TFT Color LCD with 320x240 resolution, displaying parameters and graphics of the two channels at the same time. 100M Frequency meter function: It can measure frequency, period, pulse width and duty cycle. Max. frequency workable is 100MHz and Min. frequency workable is 0.01 Hz. The instrument uses 14-bit high-speed D/Aconverterchip (5Vpp output quantization error is less than 1mV), 250MSa/s sample rate, 14bits vertical resolution. VCO Function(Voltage Control Output):Can be achieved by an external input signal: voltage controlling frequency, voltage controlling amplitude, voltage controlling offset, voltage controlling duty cycle and PWM modulations. 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), Triangle/Ramp,CMOS(0~10V), Four channels TTL, Exponential Rise, Exponential Fall, Noise, ECG, DC etc. Enable to store 64 arbitrary waveform data files, each one of waveform storage depth 8192points* 14bits; Various modulation types: AM, FM, PM, ASK, FSK and PSK modulations. Burst Output Function: There has Manual Trigger, internal CH2 Trigger, and External Trigger for your options. It can output1~1048575 pulse trains. 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. Standard dual full functional channels which are equivalent to two independent generators.