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在磁光盘原始误码特性测试过程中通常采用记“１”测漏码，或记“０”测冒码的方法测试盘片的误码性能．本文侧重分析了介质膜缺陷导致盘片产生误码的原因，建立了读出畸变信号与介质膜缺陷参量（如大小、位置、缺陷因子等）的数学模型。分析表明，在盘面记“１”和记“０”两种情况下，同一介质膜缺陷产生的信号畸变幅值相等，从而从理论上证明了记“１”测漏码与记“０”测冒码具有一定等效性。
In the process of testing the original error code characteristic of a magneto-optical disc, the error performance of the disc is usually tested by using a “1” leak detection code or a “0” measurement of a code. This paper focuses on the analysis of the cause of the error caused by the dielectric film defects, and establishes the mathematical model to read out the distortion signal and dielectric film defect parameters (such as size, position, defect factor, etc.). The analysis shows that in the two cases of “1” and “0”, the amplitude of signal distortions produced by the same dielectric film defects are equal, which proves theoretically that “1” Encoding has some equivalence.