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光端机如何实现光传输 光端机原理介绍
光端机，就是光信号传输的终端设备，通常所说的光端机是传输视频的非压缩光端机。光端机如何实现光传输呢？下面小编给大家介绍一下光端机原理。模拟光端机模拟光端机采用了PFM调制技术实时传输图象信号。发射端将模拟视频信号先进行PFM调制后，再进行电-光转换，光信号传…
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