论述数字电视系统的关键技术，对传输码流参数进行分析，提出码流分析仪在有线数字电视系统中的应用方法。
The paper discusses key technologies of the digital television system, analyzes the TS parameters and clarifies the application methods of Transport Stream Analyzer in digital cable television system.
HDB3码是基带传输系统中经常采用的传输码型。
HDB3 code is ordinary adopted in the baseband transmission system.
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