摘要
为了保证传输信号的完整性并降低数据传输的误码率,标准推荐的RS422信号级联拓扑形式为链式结构,并明确不推荐星型结构和环型结构拓扑。从传输线理论和RS422信号传输特性入手分析,通过合理的电路参数匹配设计,比较论述不同参数对信号质量的影响。通过实际电路测试试验验证,给出了一种满足工程应用的RS422星型拓扑结构及电路匹配参数选取方法,并给出了推荐使用条件和限制条件,对工程实践中需要使用星型拓扑连接方式的应用具有一定的指导作用和借鉴意义。
To ensure signal integrity and reduce error rate, it is recommended that the chain topology-is suitable for RS422 signal transmission, but not the star topology or the ring topology. The theory of transmission lines and RS422 signal characters are presented. Through proper parameter match designing, the influences of different parameters on signal are compared. Based on practical circuit measuring, a star topology and the parameter design method are given, as well as its recommended application condition and limit condition.
出处
《雷达科学与技术》
北大核心
2016年第1期91-94,共4页
Radar Science and Technology
