The instrument uses 14-bit high-speed D/A converter chip, 250MSa/s sample rate, 14bits vertical resolution. Can output up to 98 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), Four channels TTL, Exponential Rise, Exponential Fall, Noise, ECG, DC etc. 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. 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. Burst Output Function: there has Manual Trigger, internal CH2 Trigger, and External Trigger for your options. It can output 1?1048575 pulse trains. 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. Counter Function: it has 2 coupling measure modes including DC coupling and AC coupling. This design can solve inaccuracy problem of AC coupling. Standard dual full functional channels which are equivalent to two independent generators. Channel SYNC Function: support waveform copy and state copy between channels. Support two or more signal generators connected to achieve multi-channel output, the maximum support 16-channel synchronous output, the phase between each channel can be adjusted. Save Function: it can save 20 sets user-set parameters and can be loaded at any time.Use 100-240V (AC) wide range voltage power supply. Communicating Function: all functions can be controlled by PC program and the communication protocol is open for secondary development. Output Short-circuit Protection: all channels can work more than 60 seconds when the load is short-circuited. Provide powerful waveform editing PC software. Users can download arbitrary waveform to this instrument after edit through PC program which is included in user CD. Adopt ABS plastic shell with table type design.