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In communication networks, digital communications cable will be in a fairly long period of time plays an important role , and will continue to develop high frequency . In the past, the return loss of the function of the communication network is not , the network system, the return loss will not be defined and quantified. With the one-way transmission network system is bi-directional transmission network system replaced the standard digital communications cable products adds an important new metrics , namely return loss. In digital communications cable in the process of high-frequency , each manufacturer in the production process are in varying degrees troubled by poor electrical performance , the main problem is poor return loss . In the actual production process, the key factors affecting the return loss and control methods and other aspects of research, for manufacturers to improve efficiency, improve quality , with high practical value. Firstly, through the line transmission theory , from the Return loss is theoretically clarify the cause . On this basis , the study focused on the target digital communication cable manufacturing process direction of the manufacturing process , the quality management method using this first analysis of the process causes the return loss is generated , initial screening out section factor ; then through finite element analysis and simulation , and further screened factor ; in the above screening for factor analysis and , based on the test plan and conduct experiments ; then, the test data, analysis of variance, regression analysis, statistical analysis, gained control loop the key factor wave loss and control methods ; Finally, the actual mass of the method was verified.
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