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本文介绍了使用D／A转换器合成电压波形的原理。由D／A转换器直接输出的电压波形是需合成波形的NRZ采样波形，为了得到所需波形，必须采用信号恢复电路。本文介绍了信号恢复的方法，并给出了一台实用的数字合成式波形发生器的设计思路。
This article describes the principle of synthesizing voltage waveforms using D / A converters. The voltage waveform directly output by the D / A converter is the NRZ sampling waveform of the synthesized waveform. In order to obtain the desired waveform, the signal recovery circuit must be used. This article describes the signal recovery method, and gives a practical design of digital synthesis waveform generator.