NRZ code doesn't contain synchronous clock frequency.
它本身不含有位同步时钟分量。
After compensation the eye diagrams can be well recovered both for NRZ and RZ formats.
不论对于非归零码还是归零码，补偿后眼图恢复很好。
In baseband transmission system, the transform between NRZ and HDB3 is usually needed.
带传输系统中常需要进行NR Z码和HDB3码间的相互转换。
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