有线电视光接收机

●产品简介INTRODUCTIONCATV光接收机是一种应用于有线电视光纤传输网络的设备，其主要功能是将光信号转换成电信号，配合光发射机完成图像、语音、数据的传送和接收。 CATV optical receiver can be used in CATV HFC network transmitting, its function is to convert optical signals into electric signal, transmit and receive the video, voice, data with optical transmitter.●性能特点 FEATURES◆ 适合于1310nm和1550nm双波长工作窗口。Suitable for 1310nm and1550nm wavelength◆ 采用PHILIPS光接收器件，PHILIPS、NEC进口低噪声前置模块和功率倍增模块放大。Adopt PHILIPS( optional) receive device, imported low noise pre-module and power double magnify module by PHILIPS and NEC◆ 二路/四路高电平射频输出。Two or four radio frequency of high level output channel◆ 每路设有衰减器、均衡器。Independent attenuator,balanced device for every channel.◆ 具有光功率监测LED显示电路，便于使用维护。◆ 高可靠性开关电源，严密防雷击系统。High reliability on/off power，Anti-thunder system●技术指标Technical Parameters项目Items单位Unit性能参数Data输入光功率 Input Optical PowerdBm-7～+2光反射损耗 Optical Return LossdB>60波长 Wavelengthnm1100～1600光连接器 Optical Fiber Connector FC/APC SC/APC光纤类型 Operating Fiber Type One Pattern工作频带 Operating Frequency BandMHz47～860带内平坦度 Flatness In BanddB±0.75输出电平 Output LeveldBμV108载噪比 C/N Carrier To Noise RatiodB≥51载波三次差拍比（84个PAL-D） Composite Triple Beat (84PAL-D)dB66载波二次差拍比（84个PAL-D） Composite Second Order (84PAL-D)dB61