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介绍一种用于SDH光纤传输系统设备时钟的数字式锁相环的构成及设计原理,并给出了有关的测试结果,测试结果表明该锁相环具有很好的跟踪特性.
A digital phase locked loop for SDH optical fiber transmission system is introduced. The structure and design principle of the digital phase - locked loop are introduced. The related test results are also given. The test results show that the phase - locked loop has good tracking characteristics.