The Construction Of Digital TV Head End Signal Receiving System And The Research Of Key Issues

Based on briefly discussed on the the broadcast system architecture of overall Tower Head End,the article makes detailed interpretation and analysis for the entire process of digital television front reception system,focusing on the planning and design,building and construction,system debugging,network structures,as well as the problems of digital TV receiving system about receiver signal in detail discussed,the test and analysis combined with the actual situation as well.Combining with the design and the construction requirements of the digital television receiver signal receiving system,in the process of design construction,in order to achieve high reliability and scalability as the core goal,try to build a safe and effective digital signal receiving system.Project planning with safe and reliable digital TV receiver as support,establishes a rational layout,in order of main and prepar parts,remote management about the source access system.In the whole process of system design and construction,make strict whole management of the system and the construction,including complete the receiver selection of previous construction of the system,equipment layout and planning,IP address planning,planning about satellite transmission technology parameters,the cabinet layout and design,construction drawing design,etc.In the construction,highlight the strict control of construction process,in strict accord with the construction technology and design requirement,make execute and implement standards,do construction finely and safety,coordination various problems timely in the construction.During the system debugging the network administrator,request parameter and threshold be set to practically,furthest meet the practical needs.Finish the local alarm message rightly,make the function of network management and system operation be unified.For problems existing in the deployment of high definition of receiving system,after in-depth analysis and screening test of each link of the whole system locate fault point.Through the comparison and analysis of test data,induction questions' phenomenon,give a summary of regular patterns of the problems,analysis potential connection about fault phenomenon and the MAC address and switch contact working mechanism,confirm the cause of the problem.At last,through experiment and summarize the regularity,solutions are obtained and the corresponding solving steps are given.Make the whole system are more perfect and reasonable,more safe and reliable,and easy to manage.In the last part of the article,this paper expounds how to carry out the new equipment selection,carry on the strict test and comprehensive record of the relevant data of the new type equipment of hardware and software,network management,make conclusion through the test data analysis,and provide strong technical support of the equipment purchasing decisions for the company.Finally,according to the characteristics of the receiver receiving system's overall architecture make emergency procedures of the corresponding maintenance standard and troubleshooting.In the end of this paper,each stage of the work is summarized and looks into the distance of the future development of digital TV.