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一、引言采用码速调整技术实现异步复接时,在接收端利用相控环恢复码速(称码速恢复装置);在数字信号传输通道中,这种相控环还可单独用来消除数字信号在传输过程中积累的相位抖动(称去抖动器)。本文是采用正码速调整的二次群异步复接器专题研究的码速恢复装置研制总结。其中包括物理说明、基本关系、工程设计及测量结果。本文所述内容基本上是锁相技术在异步复接中的应用。因为锁相技术比较成熟,所以文中侧重说明这种特殊的工程应用。
I. INTRODUCTION The use of code-speed adjustment techniques to achieve asynchronous multiplexing, the use of phase-locked loop recovery at the receiving end of the code speed (called code recovery device); digital signal transmission channel, the phased-loop can also be used alone to eliminate Phase jitter accumulated during the transmission of digital signals (called debouncers). This article is the development of the code speed recovery device using the quadratic group asynchronous multiplexer with the positive code speed adjustment. These include physical description, basic relationships, engineering design and measurement results. The content described in this article is basically the application of phase-locked technology in asynchronous multiplexing. Because the phase-locked technology is more mature, so the text focuses on this special engineering applications.