由可编程器件控制的信号发生器可输出正弦波、方波、锯齿波，其频率可调。能输出正

弦波、方波、锯齿波的组合波形，且组合波形的频率可调。还能输出占空比和频率可调的方

波。-Controlled by a programmable device signal generator can output sine wave, square wave, sawtooth wave, its frequency is adjustable. Be able to output sine wave, square wave, sawtooth wave combination, and the combination of the frequency of the waveform adjustable. Can also output square wave with adjustable duty cycle and frequency.