00-2 技术手册目录

目 录

目 录

第1章 数字同步网的基本概念................................................................................................1-1

1.1 引言....................................................................................................................................1-1 1.2 同步....................................................................................................................................1-1 1.3 滑动....................................................................................................................................1-2 1.4 网同步方式.........................................................................................................................1-3

1.4.1 准同步方式..............................................................................................................1-3 1.4.2 主从同步方式...........................................................................................................1-4 1.4.3 互同步方式..............................................................................................................1-4 1.4.4 混合同步方式...........................................................................................................1-4 1.5 定时环路.............................................................................................................................1-5

第2章 SYNLOCK系统概述....................................................................................................2-1

2.1 SYNLOCK系统的应用.......................................................................................................2-1 2.2 SYNLOCK系统结构..........................................................................................................2-1 2.3 SYNLOCK系统的性能特点................................................................................................2-3

第3章 SYNLOCK系统组网结构............................................................................................3-1

3.1 概述....................................................................................................................................3-1

3.1.1 等级结构..................................................................................................................3-1 3.1.2 数字同步网的构成....................................................................................................3-1 3.1.3 同步区划分..............................................................................................................3-3 3.2 用SYNLOCK组建省内数字同步网....................................................................................3-4

3.2.1 规划目标..................................................................................................................3-4 3.2.2 局内定时分配...........................................................................................................3-4 3.2.3 局间定时分配...........................................................................................................3-6 3.2.4 SYNLOCK组网结构................................................................................................3-9 3.2.5 省内数字同步网的可靠性.........................................................................................3-9

第4章 SYNLOCK系统硬件结构............................................................................................4-1

4.1 概述....................................................................................................................................4-1 4.2 系统总体结构.....................................................................................................................4-1 4.3 系统单板功能.....................................................................................................................4-3 4.4 控制系统.............................................................................................................................4-5 4.5 基准源输入接口系统..........................................................................................................4-7

4.5.1 GPS系统.................................................................................................................4-7 4.5.2 DSSR单板..............................................................................................................4-9 4.5.3 LCI单板.................................................................................................................4-10

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SYNLOCK® 通信楼综合定时供给系统 技术手册

目 录

4.6 本地时钟源系统................................................................................................................4-12 4.7 时钟合成系统...................................................................................................................4-13 4.8 时钟输出接口系统............................................................................................................4-14

4.8.1 TOE单板...............................................................................................................4-14 4.8.2 TOG单板...............................................................................................................4-15 4.8.3 TOA单板...............................................................................................................4-16 4.9 监测系统...........................................................................................................................4-17

4.9.1 IMC单板................................................................................................................4-17 4.9.2 TIA单板.................................................................................................................4-18 4.10 告警系统.........................................................................................................................4-19 4.11 终端系统.........................................................................................................................4-21 4.12 电源系统.........................................................................................................................4-22

第5章 SYNLOCK系统软件结构............................................................................................5-1

5.1 概述....................................................................................................................................5-1 5.2 软件总体结构.....................................................................................................................5-1 5.3 单板软件.............................................................................................................................5-2

5.3.1 单板软件..................................................................................................................5-2 5.3.2 单板与主机通信.......................................................................................................5-3 5.4 主机软件.............................................................................................................................5-4

5.4.1 终端处理模块...........................................................................................................5-4 5.4.2 底层收发处理...........................................................................................................5-5 5.4.3 系统同步控制模块....................................................................................................5-5 5.4.4 单板管理模块...........................................................................................................5-6 5.4.5 告警处理模块...........................................................................................................5-7 5.5 终端软件.............................................................................................................................5-8

5.5.1 数据管理模块...........................................................................................................5-8 5.5.2 维护监视模块.........................................................................................................5-10 5.5.3 联机帮助模块.........................................................................................................5-10 5.5.4 底层通讯模块.........................................................................................................5-11

第6章 系统配置.....................................................................................................................6-1

6.1 概述....................................................................................................................................6-1 6.2 SYNLOCK机柜的单板布局................................................................................................6-1 6.3 SYNLOCK的配置级别.......................................................................................................6-2 6.4 SYNLOCK系统标准配置...................................................................................................6-3

第7章 SYNLOCK技术指标及规范.........................................................................................7-1

7.1 SYNLOCK总体技术标准...................................................................................................7-1 7.2 输入端口性能规范..............................................................................................................7-1 7.3 输出端口性能规范..............................................................................................................7-2

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SYNLOCK® 通信楼综合定时供给系统 技术手册

目 录

7.4 监测功能.............................................................................................................................7-3

7.4.1 监测能力..................................................................................................................7-3 7.4.2 GPS信号的监测......................................................................................................7-3 7.4.3 外同步输入信号的监测............................................................................................7-4 7.4.4 输入源质量监测.......................................................................................................7-4 7.4.5 同步信号监测...........................................................................................................7-4 7.4.6 输入源切换..............................................................................................................7-5 7.5 监控管理功能.....................................................................................................................7-6

7.5.1 通信功能..................................................................................................................7-6 7.5.2 安全管理与分级权限................................................................................................7-6 7.5.3 告警.........................................................................................................................7-6 7.6 性能指标.............................................................................................................................7-7

7.6.1 频率准确度..............................................................................................................7-7 7.6.2 牵引范围..................................................................................................................7-8 7.6.3 保持转跟踪..............................................................................................................7-8 7.6.4 时钟单元性能.........................................................................................................7-10 7.6.5 输出噪声产生.........................................................................................................7-11 7.6.6 输入噪声容限.........................................................................................................7-14 7.6.7 噪声传递特性.........................................................................................................7-17 7.6.8 相位瞬变................................................................................................................7-17 7.6.9 保持性能................................................................................................................7-18 7.6.10 相位不连续性.......................................................................................................7-20 7.6.11 相位重建..............................................................................................................7-21

第8章 同步状态信息控制过程................................................................................................8-1

8.1 概述....................................................................................................................................8-1 8.2 ITU-T的相关规定...............................................................................................................8-2 8.3 SYNLOCK对SSM的控制.................................................................................................8-4

第9章 SYNLOCK系统机械电气特性.....................................................................................9-1

9.1 机柜....................................................................................................................................9-1 9.2 机架与插框.........................................................................................................................9-1

9.2.1 机架.........................................................................................................................9-1 9.2.2 插框.........................................................................................................................9-1 9.3 接插件、布线及连接电缆...................................................................................................9-2 9.4 机械加工工艺.....................................................................................................................9-3 9.5 印刷电路板.........................................................................................................................9-3 9.6 机架供电系统.....................................................................................................................9-4 9.7 冷却系统.............................................................................................................................9-4 9.8 电源要求.............................................................................................................................9-4 9.9 环境要求.............................................................................................................................9-4

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SYNLOCK® 通信楼综合定时供给系统 技术手册

目 录

9.9.1 接地.........................................................................................................................9-4 9.9.2 环境条件..................................................................................................................9-4

附录A 专用词汇及缩略语说明...............................................................................................A-1 附录B 术语与定义................................................................................................................B-1

B.1 时间...................................................................................................................................B-1 B.2 老化...................................................................................................................................B-1 B.3 时延...................................................................................................................................B-1 B.4 抖动与漂动........................................................................................................................B-1 B.5 频率准确度........................................................................................................................B-1 B.6 时间间隔误差TIE..............................................................................................................B-2 B.7 最大时间间隔误差MTIE...................................................................................................B-2 B.8 时间偏差TDEV.................................................................................................................B-2 B.9 单位时间间隔UI................................................................................................................B-3 B.10 ppm/ppb...........................................................................................................................B-3

附录C 参考文献....................................................................................................................C-1

C.1 建议与标准........................................................................................................................C-1

C.1.1 Bellcore...................................................................................................................C-1 C.1.2 ITU-T.......................................................................................................................C-1 C.1.3 NSI..........................................................................................................................C-2 C.1.4 信息产业部标准......................................................................................................C-2 C.2 参考书籍...........................................................................................................................C-3

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