数字光端机技术手册.doc

ESMART-1V-1A -1D-E ESMART-4V-1A -1D-E ESMART-8V-1A -1D-E 数字光端机技术手册 新加坡ESMART科技股份有限公司  Esmart focuses on designing and supplying intermediate products for the following segments of the electronics industry, namely Multimedia infotainment Data communications Wireless ( GPS / GSM ) applications Digital video services and systems Optical communications system Esmart design and supply solutions ranging from designing the entire subsystems of electronic products - hardware design, firmware development, and PCB layout design - to supplying the main active devices, chipsets and other electronic components. For instance, the diagram below shows an example of the subsystem we developed for a customer end product: Esmart design and supply solutions ranging from designing the entire subsystems of electronic products - hardware design, firmware development, and PCB layout design - to supplying the main active devices, chipsets and other electronic components. For instance, the diagram below shows an example of the subsystem we developed for a customer end product: We have developed subsystems for televisions; DVD players; GPS / GSM location tracking; video streaming; video surveillance; and video-on-demand end-products. We also distribute electronic components for various principals from the US, Europe, China, Japan, Korea and Taiwan. ESMART通信数字光端机产品----ESMART ESMART数字光端机一种全新的点对点光端机。光端机可以将视频、音频数据信号任意组合，在一光纤上同时双向传输。它支持多模或单模光纤提供盒式或式安装(有专用机箱具有其他光端机难以的配置灵活性和集成性。在光传输预算内光端机保证视频、音频数据信号。光端机模拟光端机光端机模拟光端机通信数字时分复用技术调幅、调频等通信技术大规模集成电路模拟电路灵活性 非常灵活不灵活信道间干扰 原则上容易产生串扰交调互调等非线性干扰温度特性 不会产生温漂产生温漂稳定性 非常稳定容易受环境影响引起工作不稳定 bit数字编码，实时数字视频传输，视频传输标准超过EIA RS-250C短程视频传输67dB； 音频采用18bit数字编码采样，音频信噪比85dB； 独有的视频数字编码技术，信道控制技术 线路编码及控制电路采用纯硬件实现； 采用独特的线路编码方式和信道控制技术，摒弃了传统的帧结构方式； 采用专用光收发芯片，增加了光传输链路的稳定性； 可以传输多种数据通讯格式，包括以太网传输 ESMART数字光端机温度-0℃~+70℃、工作湿度0~95%（无冷凝的，光端机–nV – nA – nD – E - S/M – H - U/R - FC/SC/ST ESMART：数字视频系列产品 TA：视频发射 RA：视频接收 TC：双向视频 n：n路通道 V：视频通道 A：音频通道 D：数据通道 E：以太网通道 S：单模光纤 M：多模光纤 H：高功率激光器 U：独立式结构