指针调整会在ＳＤＨ（ＳｙｎｃｈｒｏｎｏｕｓＤｉｇｉｔａｌＨｉａｒａｃｈｙ）网中引入非常大的低频抖动。通常，在解同步器中需要采用指针泄漏技术来抑制这种抖动以使设备满足ＩＴＵ－Ｔ建议Ｇ．７８３的要求。本文给出了一种新颖的抑制指针调整抖动的方法，这种方法通过一个数字锁相环对指针抖动进行平滑并将平滑相位调相到一个参考信号上，从而避免了１比特或１／Ｎ比特泄漏中存在的较大的相位量化阶跃。这种方法对指针抖动的泄漏可以近似为一个平滑的过程。对一个ＡＵ－４／Ｅ４实验系统的测试表明，这种方法的抖动抑制性能达到国际先进水平。 Pointer adjustment introduces very large low-frequency jitter in the Synchronous Digital Hierachy (SDH) network. In general, a pointer leakage technique needs to be used in the de-synchronizer to suppress such jitter so that the device meets the ITU-T recommendation G. 783 requirements. This paper presents a novel method of suppressing hand-adjusted jitter by using a digital phase-locked loop to smooth the pointer jitter and phase-smooth the smoothed phase to a reference signal, avoiding the need for 1-bit or 1 / N Larger phase quantization steps present in bit leaks. This method of pointer jitter leakage can be approximated as a smooth process. The test of an AU-4 / E4 experimental system shows that the jitter suppression performance of this method has reached the international advanced level.