产品描述
E1音频编解码器,是采用数字处理芯片及大规模FPGA、数字编解码转换和时钟恢复技术方法设计的。适用于广播节目源传输的设备。音频编码器是将输入的立体声音频信号,经A/D 数字编解码变换或数据格式转换后,重新成帧,形成串行数据流,由E1口输出。
音频解码器是将接受E1串行数据,经时钟恢复、经拆帧后,恢复出音频信号,输出立体声音频。
功能特点
◆ 整机为单板设计外壳为全铝合金设计,IP40防护等级;
◆ 使用FPGA、数字编解码和时钟恢复技术,集成度高、稳定性性高;
◆ 音频接口为XLR卡侬头平衡接口,音频供电电源为大功率环形变压器+-18V供电,高动态范围;
◆ 使用先进的数字处理、时钟恢复、数字编解码芯片,其性能指标更好;
◆ 面板有LED灯实时指示E1、数字音频和立体声信号的工作状态;
◆ 利用SDH、PDH、微波的2M通道,实现点对点地传输音频信号源;
◆ 配合E1接口分配器,可以实现一发多收的广播式传输音频信号源;
◆ 适用于省、市、县、乡级地区组网,实现超长距离传输音频信号源;
◆ E1接口符合G.703 建议,采用全数字化时钟恢复和平滑锁相技术;
◆ 音频接口三级防雷,达到IEC61000-4-5 (8/20μS) 差模:6KV 阻抗(2Ω);共模:6KV,阻抗(2Ω) 标准;
◆ 多种电源方式可选:AC220V、DC-48V/DC24V等;
技术参数
◆ 音频接口
信号电平 0.5-4Vp-p
输入/输出阻抗 600Ω(非平衡或平衡)
带宽 20Hz-20KHz
总谐波失真 <1%
音频A/D 24bit
信噪比(SNR): >85dB
连接端子 RCA
◆ E1接口
设备接口:设备接口符合G.703建议
速 率: 2048Kb/s±50ppm
码 型: HDB3
阻 抗: 非平衡式75Ω/平衡式120Ω
非平衡式配同轴接口适配器,可适配75-2/3同轴电缆
抖动特性: 满足G.742、G.823建议
输入口允许衰减:0~6dBm
◆ 电源需求
系统电源: AC180V ~ 260V;DC –48V;DC +24V
功 耗: ≤10W
◆ 尺寸大小
19英寸: 483(宽)X138(深)X44(高)mm
◆ 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.