Understand the importance of receiving parameters

Those who are engaged in satellite reception are aware of the importance of receiving parameters. Therefore, the author records various new parameters in the data book every week, because correct parameter setting can be said to be the key to successful reception. Some time ago, some friends talked about receiving new digital programs and performing star-changing operations, and they failed to debug the satellite antenna and receiver for one or two days. The reason is that some of them are antenna debugging skills, some are due to improper operation of the receiver, and others are caused by inaccurate reception parameter settings or changes in the reception parameters. Judging from the changes in the reception parameters of digital satellite TV channels, the digital satellite program signal transmission in mainland China is stable and normal, and it is very rare that the reception parameters change. From the beginning of 1996, CCTV's 3, 4, 5, 6, 7, and 8 digital pressure channels were first transmitted through the Asian 2 satellite Ku-band. In January 1997, nine provinces and regions TV stations passed the C-band digital pressure transmission of the star; 1997 In September, Xinjiang station began digital transmission in the C-band of the 1A satellite in the Asia-Pacific region; at the end of December 1997, Beijing Station as a local station also began to transmit digital transmission through the Ku band in Asia No. 2; in September 1998, Xinnuo 1 C-band digital transmission was adopted Transmit Shanghai Satellite TV; at the end of December of the same year, the Ku band of the star was used to transmit "Cuncuntong Radio and Television" with CBTV digital live TV; last September, all 31 provincial-level stations were broadcast on the Hainan station on the Asia Pacific 1A star; last year 10 On January 1st, 31 provinces and autonomous regions were sent to Xinnuo No. 1 CBTV live broadcast platform; there are also successively covering the world through Pan American No. 2, No. 3, No. 4, No. 5, Yinhe 3R, Hot Bird No. 3 satellites, etc. There are several channels of CCTV; all the digital channels have not changed since the broadcast, except for the adjustment of the parameters of Tibet Satellite TV, and there have been no problems such as evacuation and star switching. What is different is that some satellite TV channels belonging to foreign countries and Hong Kong and Taiwan regions transmitted over China are subject to frequent changes. Sometimes the parameters are changed, sometimes the stars are transmitted, and sometimes the channels are changed and stopped. The occurrence of such situations often brings certain influence and inconvenience to the reception work of some foreign-related units. Therefore, in order to avoid or control the impact and loss of such accidents, the receiving unit should pay attention to the exchange of TV program information. at the lowest limit.
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