佳和DX1SG数字程控用户交换机安装手册V1.2

DX 1S-G 数字程控用户交换机 安装手册 版本：V 1.2 DX1S-G 数字程控用户交换机安装手册 i 目 录1. 总体介绍 ..................................................................1 1.1 概述...........................................................................1 1.2 特点...........................................................................2 2. 技术指标 ..................................................................3 3. 注意事项 ..................................................................4 4. 系统接地 ..................................................................5 4.1 接地规则 ..................................................................5 4.2 设备接地不好的后果............................................6 4.3 简单证实地线状态方法 .......................................6 4.4 接地规定 ..................................................................7 4.5 接地方法 ..................................................................7 5. 设备安装 ..................................................................9 5.1 安装条件 ................................................................11 5.1.1 安装环境...........................................................11 5.1.2 接地条件...........................................................11 5.2 一次电源连接 .......................................................11 5.3 直流电源线 ...........................................................11 5.4 保护地线 ................................................................12 5.5 信号地线 ................................................................12 5.6 联机线连接 ...........................................................12 联机线连接.........................................................................13 5.7 安装顺序 ................................................................14 5.8 板卡安装 ................................................................14 5.9 用户电缆组布线......