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本文论述了以高斯近似作为基础的误码率快速测量法应该考虑的问题:高斯近似的误差、最佳雪崩增益G_(opt)和判决电平D必须依赖实际调试选定,以及雪崩光电二极管倍增分布特性对判决电平取定的影响。文中介绍了以微机组成的测量装置,并作了原理性分析。
This paper discusses the problems that should be considered in the fast error rate measurement based on Gaussian approximation: the Gaussian approximation error, the optimal avalanche gain G opt and the decision level D must depend on the actual debug selection and the avalanche photodiode multiplication The Influence of Distribution Characteristics on Deciding the Decision Level. The paper introduces the measurement device composed of microcomputer and makes a principle analysis.