1. 提高了电视节目的质量 数字化以后的电视信号传输，噪声没有积累，各用户的信号质量一样， 提高了传输质量。我国目前有16 省市和中央电视台都用了数字卫星电视节目，DVD（数字视盘）也已经上市。采用MPEG－2 视频编码标准， 视频比特率为4~5Mb/s，利用这些
2011-02-12 09:27
2015-10-09 11:33
PBI2H-1205J - 15-25 WATTS DC/DC SINGLE - Powerbox
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PBI2H-2412G - 15-25 WATTS DC/DC SINGLE - Powerbox
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PBI2H-11048F - 15-25 WATTS DC/DC SINGLE - Powerbox
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PBI2H-1215F - 15-25 WATTS DC/DC SINGLE - Powerbox
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PBI2H-4815J - 15-25 WATTS DC/DC SINGLE - Powerbox
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PBI2H-11012G - 15-25 WATTS DC/DC SINGLE - Powerbox
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PBI2H-11024J - 15-25 WATTS DC/DC SINGLE - Powerbox
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PBI2H-1212F - 15-25 WATTS DC/DC SINGLE - Powerbox
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