摘要
通过对PCM四线方式传输模拟远动信号造成误码率居高不下的情况进行分析,找出了重复D/A、A/D变换是造成误码率高的根本原因,并采取改造远动装置接口的方法,一次性地实现数字远动信号传输。这样既降低了误码率,又减少了冗余变换,收到了很好的效果。
Through analyzing the reasons that produce high error ratio of PCM four-lines mode,we find that repeatedly to carry on the D/A and A/D conversions are the main factors.By rebuilding the communication interface of the remote terminal unit,and digital telecontrol signals are transmitted entirely,it makes both the error ratio and the redundancy transaction decreased.This method meets with good results.
出处
《电力系统通信》
2004年第11期55-56,60,共3页
Telecommunications for Electric Power System
关键词
模拟远动信号
数字远动信号
通道
信号传输
误码率
analogue telecontrol signal
digital telecontrol signal
channel
transmit
error ratio
