产品描述
袖珍型RS422光猫采用大规模FPGA设计，支持异步RS-422通信接口的光纤MODEM。该设备是连接远程终端单元(RTU)到主机(HOST)或分布式数据采集系统(SCADA)控制器的最佳选择，具有很高的性能价格比。使用普通的多模光纤，有效通信距离达4KM，使用普通的单模光纤，有效通信距离可达40KM以上，串行口的通信速率可达921.6KBPS。
由于采用了光纤作为传输介质，可以完全避免恶劣环境下雷电、浪涌、电磁干扰等对通信设备的威胁，同时省去了原来使用铜线时的雷电浪涌保护设备投资。
功能特点
◆ 基于自主知识产权的集成电路
◆ 具备自动侦测串口信号波特率的能力
◆ 自动检测设备收无光时是对端设备断电，或是光纤断线，并在LED上指示
◆ 串行口接口防雷达到IEC61000-4-5 (8/20μS) 差模:6KV 阻抗(2Ω)；共模:6KV，阻抗(2Ω) 标准
◆ 机架式设备网管接口采用SNMP。
◆ 串行数通道可以传输异步从300-921.6Kbps波特率自适应的串口数据
◆ 可以组成E1串口转换器(A)－－-E1光纤Modem(B)－－-光纤串口 Modem(C)的拓扑结构
技术参数
◆ 光纤部分
光纤：单纤双纤
光纤接口：FC/SC/ST/LC(SFP)
波长：850nm/1310nm 多模；1310nm/1550nm 单模
无中继传输距离：20~120Km
典型发射功率:
单模1310/1550nm：≥-9dBm
多模850nm：-18dBm
多模1310nm: -25dBm
接受灵敏度范围：-28dBm~- 40dBm
◆ 串行接口
数据接口：RS-232/RS-485/RS-422
数据标准：EIA RS232 RS485 RS422
速率： 110bps-115.200Kbps
物理接口： 接线端子
◆ 电源需求
系统电源： AC180V ~ 260V；DC –48V；DC +24V
功 耗： ≤3W
◆ 尺寸大小
外观结构: 136（宽）X131（深）X31（高）mm 桌面型
◆ 工作环境
工作温度： -10℃ ~50℃
工作湿度： 5% ~ 95% (无凝露)
存储温度： -40 ℃~ 80℃
存储湿度： 5%~ 95% (无凝露)
Important Notice
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.
The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.
The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.
