| 摘要 |
The invention provides a read/write channel with a diagnostic system for a disk drive. The diagnostic system may process internal and external signals. The read/write channel may have one or more clock generators, a digital to analog converter, an analog comparator, and a successive approximation register. The read/write channel may be implemented on an integrated circuit or a complementary metal oxide semiconductor. The read/write channel may have partial response maximum likelihood (PRML) encoding and decoding. The diagnostic system uses bit-weighing or successive approximation to convert analog signals into digital diagnostic signals.
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