【摘要】 本文分析了目前我国铁路以及许多国家采用的模拟网络进行数据信号传输中的有关问题,并根据我国铁路系统采用的四种主要载波机的时延特性,确定了兼容四种类型载波机的时延特性,并以此为基础,采取大搜索范围及收敛速度互补的混合优化技术,设计并实现了群时延均衡器电路。经测试表明,均衡效果良好,达到CCITTM1020规定的技术指标。更多还原

【Abstract】 In this article, we analyse the problems concerned with datatransmission through analogue network in our railway and in manyother countries. According to the characteristic of time delay of fourtypes carrier equipments which mainly used in our country. We de-termine the characteristic of time delay which can be converged in fourtypes of carrier equipments. On the basis of that, a large searching range and a convergence speed compensated hybrid optimum technique isadopted to design and realize the group time delay equalizer circuit.Thetesting result shows that the equalization effect is satisfactory andreachs to the technique index fixed by CCITT M 1020.更多还原