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数字卫星电视接收涉及到的操作技巧要多于模拟卫星电视接收,尤其是初次接收数字信号遇到的问题会更多。许多卫视爱好者都经历过对接收数字信号的盲目乐观到对收视数字信号屡试屡败的困惑。下面介绍一些接收卫星数字电视信号的关键技巧,或许能够起到一些答疑解惑的作用。一、影响数字卫星电视接收的主要环节接收数字信号与模拟信号相比,主要的区别在于:使用数字机存在着输入的参数多而复杂,还有门限、解码需时间和频带窄等四个方面的因素。正是多出了这几个方面的因素,才使接收数字信号要比接收模拟信号困难得多。这是因为环节越多,只要有一个环节出了问题都会引起全局的失败。每增加一个不确定量,给全局增加的困难要增加十倍乃至几十倍。
Digital satellite television reception involves more operational skills than analog satellite television reception, especially when it comes to receiving digital signals for the first time. Many TV lovers have experienced the perplexity of blindly optimistic about receiving digital signals to the repeated failures of viewing digital signals. The following describes some of the key techniques to receive satellite digital television signals, may be able to play a number of Q & A. First, the main aspects of the impact of digital satellite TV receiver Receiving digital signals Compared with the analog signal, the main difference is that: the use of digital input parameters there are many and complex, there are thresholds, decoding time and narrow band of four areas the elements of. It is more than these aspects of the factors that make it more difficult to receive digital signals than to receive analog signals. This is because the more links, as long as there is a link out of the question will cause the overall failure. For each additional uncertainty, the overall increase in the difficulty to increase ten times or even a few times.