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北京通州区宾馆卫星电视安装,诚信合作,信誉保证_北京华创科技有限公司

北京华创科技有限公司

主营:北京卫星电视安装,石景山卫星电视小锅安装,酒店卫星电视安装

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北京通州区宾馆卫星电视安装,诚信合作,信誉保证

2025-07-01 05:00:01  1105次浏览 次浏览
价 格:面议

卫星电视安装调试:夹具中部是100.5°亚卫2号,早先调好不变。向左按卫星顺序调出,可调至68.5°泛美4号。向右也是一样调出,可调至134°亚太1A。为了方便寻星,可在夹具中部100.5°为中心点,向两边延伸,高频头在轨道内滑动1°,拉开距离21毫米左右,随意选择任何一星,调准后固定,再调另一星。只要在轨道内能摆下高频头,就可以收到该位置的卫星电视节目。正馈天线当作偏馈用,夹具两端聚焦较差,只能收模拟讯号。弱讯号有雪花点。其余的卫星讯号能覆盖到的地区,都能正常收视。

卫星电视安装寻星时,将开关K2拨到档位3,此时机内的锂电池组通过K2“3”档的触点分别向功放电路、直流升压电路(12v升至18v)、液晶驱动电路供电,直流升压板输出的18v电压,再向卫星接收机供电。从卫星接收机输出的音频信号一路送到功放板的输入端W2,另一路作为外接音频信号的输出端。从卫星接收机输出的视频信号送往K1-1,通过K1的切换,可将外接的视频信号输入到液晶驱动板上。此时机内的液晶屏可作为显示器使用;也可接摄像头做监视器用。

避开建筑物的遮挡

在天线指向卫星的方向上应该没有树木、房屋、铁塔、高压线及高山等任何物体遮挡。一般来说,天线指向周围遮挡物的连线与天线指向卫星的连线之间的夹角应以大于5°为宜。

避开微波信号的干扰

当接收卫星电视安装的时候,有的地点会遇到地面微波信号的明显干扰,主要表现在3.4~4.2 GHz的C波段范围内。最简单的办法是变换天线的安装位置,利用高大建筑物挡住干扰,或者在天线前方加金属屏蔽网,将干扰波吸收与隔离。干扰对KU波段天线来说不是主要问题,因为KU波段的干扰信号比C波段要少得多。

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