论文部分内容阅读
(上接第10期)1双向回传通道调试的目的双向HFC网的调试要达到以下目的:(1)保证有源设备工作在最佳状态。(2)实现网络各部分设计的增益值(电平值)。(3)保证双向回传放大器和反向激光器具有合适的输入电平值(功率值)。(4)保证上行通道的载波、汇集噪声比。(5)保证回传到前端的信号合理分配与各种业务
(On the next 10) 1 two-way return path debugging purposes bidirectional HFC network debugging to achieve the following objectives: (1) to ensure that the active device works in the best condition. (2) to achieve the design of the network gain value (level value). (3) It is guaranteed that bidirectional feedback amplifier and reverse laser have suitable input level (power value). (4) to ensure the uplink channel carrier, the collection of noise ratio. (5) to ensure that the signal back to the front-end distribution of a reasonable and various business