摘要
传输设备经历了几代更新,已逐步完成了模拟设备到PDH设备和SDH设备的过渡。SDH有许多PDH设备所不能比拟的优点,但也存在一些缺陷,比如指针调整引起的抖动。由于传输设备的抖动对通信质量至关重要,文中通过理论分析,结合实际测试,对传输设备工程验收中抖动指标的测量进行了详细的论述。
Transmission equipment has undergone several generations of updates, and it has been gradually completed the transition from analog devices to the PDH and SDH equipment. There are many advantage of SDH equipment that PDH equipment can not match, but it also has some defects, such as jitter induced by pointer adjustment. The jitter of the transmission equipment is very important for the quality of communication, for this reason, through theoretical analysis, combined with the actual test, the jitter measurements in transmission equipment engineering acceptance are discussed in detail.
出处
《物联网技术》
2013年第7期57-59,61,共4页
Internet of things technologies
关键词
SDH数字设备
相位噪声
抖动测量
通信
SDH digital devices
Phase Noise
jitter measurement
communication
