Sampling rate up to 250MSa/s.Built-in arbitrary waveform with 250 MSa/s sampling rate.4 downloadable 2048 dots arbitrary waveform memories. With 12 bit wide waveform generator, the output waveform can be more delicate with low distortion. Fully numerical control: It can display and numerical control amplitude, offset, frequency, duty cycle of current signal output and phase difference of two channels. And dual-channel arbitrary integer multiples of the frequency output when no phase error signal phase drift; High frequency accuracy: magnitude 10-6. High resolution: Full range frequency resolution can be 10 mHz. Both main and subsidiary wave duty cycle are adjustable separately (0.1%~99.9%? All range continuously adjustable, digital directly setting.High waveform accuracy: The output waveform synthesized by function calculation is of high accuracy and low distortion.Arbitrary waveform: User can load arbitrary waveform according to the need.Sweep Function:Linear sweep and Logarithmic sweep. Starting and stop points can be set optionally. Save function: 20 sets of parameters defined by the users can be saved and loaded anytime. Operation mode: Button and knob controlled with LCD1602 display, digital set directly or knob adjusted continuously.Highly reliable:Large scale integrated circuit, Surface mounting technology, reliable and durable.Frequency measurement:Frequency of internal / external signal can be measured through built-in 100MHz frequency meter.