摘要
SYV75-5和SYWV75-5是两种传输视频信号的同轴电缆,从理论上讲SYV75-5是用于监控系统的视频信号传输,SYWV75-5是用于有线电视的视频信号传输,然而在实际工程中有的工程商却用SYWV75-5的线缆做视频传输。两种线缆的价格之差影响到工程造价,因此两种线缆在实际工程中能否替换的问题是值得探究的。通过理论分析与实际测试,论证SYV75-5和SYWV75-5两种同轴电缆在视频传输线路中的性能优劣,由此得出两种线缆正确的选用方法。
SYV75 -5 and SYWV75 -5 are two kind of coaxial cable of video signal transmission. In theory, SYV75 - 5 is intended for video signal transmission of monitoring system, SYWV75 - 5 is used for television signal transmission of CCTV. However, SYWV75 -5 cable is used for video signal transmission in actual engineering. The price of SYV75 -5 than SYWV75 -5 almost twice as expensive, the price gap directly affects project cost. Therefore, it is worth studying whether the two cables can be replaced in practical engineering. In this paper, through theoretical analysis and practical test, the transmission performance of SYV75 - 5 and SYWV75 - 5 coaxial cable in video transmission lines is discussed, and the selection of two kinds of cable is obtained.
出处
《中国有线电视》
2014年第1期51-56,共6页
China Digital Cable TV
关键词
视频
高频
衰减
失真
video
high frequency
attenuation
distortion
