This paper expounded the working principle of PC-based Arbitrary Waveform Generator(AWG),analysed the reasons of frequency error,Waveform error and waveform distortion of AWG. The methods to estimate the errors are discussed,and some technical measures to reduce the errors are proposed.
The new techniques include oversampling technique in digitalization of seismic waveform, spectrum contraction technique in data - transmitting and error-controlling and so on.