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介绍了两种新的精确评价数据采集系统的直流增益和线性度的方法与过程，即“按码精确评价法”和“定间距（为量化误差整数倍）精确评价法”。同时讨论介绍了方法的优缺点及应用。
Two new methods and procedures for accurately evaluating the DC gain and linearity of a data acquisition system are described, namely “precise code-by-code” and “precise evaluation of fixed-distance (an integral multiple of quantization error)”. At the same time discussed the advantages and disadvantages of the method and application.