"Times New Roman"">标准1U/2U
"Times New Roman"">工业机架式机箱,经防磁处理。采用模块化设计,插拔式卡槽安装。支持双钟冗余,支持多种输入源冗余(例如,一台时钟即可完成GPS
mso-hansi-font-family:"Times New Roman"">、北斗、上级同步网信号输入的冗余)。
GPS时钟设备 "Times New Roman"">的特点
1、与外同步时钟信号同步精度高,同步精度优于±0.1 mso-hansi-font-family:"Times New Roman"">μs "Times New Roman"">。采用多同步源自适应同步技术,同步精度优于±20ns "Times New Roman"">。
2、采用冗余结构
mso-hansi-font-family:"Times New Roman"">支持双GPS "Times New Roman"">北斗热备和双IRIG-B "Times New Roman"">热备且装备有高精度守时时钟。标准时间同步钟本体可同时接入GPS "Times New Roman"">北斗和2路IRIG-B mso-hansi-font-family:"Times New Roman"">码外同步信号,互为备用。时标信号扩展装置可同时接入2 mso-hansi-font-family:"Times New Roman"">路IRIG-B "Times New Roman"">码外同步信号,互为备用。主时钟和信号扩展装置都可采用了冗余化装置,保证了GPS "Times New Roman"">北斗时间同步系统的可靠性和稳定性。
3、模块化设计,多种输出接口,使用灵活方便。
mso-hansi-font-family:"Times New Roman"">可输出IRIG-B(AC) "Times New Roman"">码、IRIG-B(DC) "Times New Roman"">码、可定义的时分秒脉冲空接点、时间报文信息,NTP/SNTP "Times New Roman"">网络授时信号,每12 "Times New Roman"">路为一组,可组合。装置可输出84 "Times New Roman"">路。
mso-hansi-font-family:"Times New Roman"">采用2U "Times New Roman"">、19”标准机箱,可单独组屏,为将来GPS mso-hansi-font-family:"Times New Roman"">北斗时间同步信号的扩展提供了方便,便于维护和管理。
4、双CPU mso-hansi-font-family:"Times New Roman"">并行处理时间报文输出技术
mso-hansi-font-family:"Times New Roman"">时间报文输出采用了双CPU "Times New Roman"">并行处理技术,报文发送时刻为秒的准时沿,误差不大于+10 "Times New Roman"">μs。
5、高精度脉冲输出
mso-hansi-font-family:"Times New Roman"">脉冲输出采用脉冲大电流发生电路,使光电隔离空接点能输出高精度的脉冲信号,误差不大于0.1 mso-hansi-font-family:"Times New Roman"">μs "Times New Roman"">。
6、高精度守时时钟
mso-hansi-font-family:"Times New Roman"">采用闭环控制守时技术实现高精度守时时钟,守时精度可达到1 mso-hansi-font-family:"Times New Roman"">μs/h "Times New Roman"">。
7、采用无过冲IRIG-B(AC)码产生技术,产生高精度的IRIG-B(AC)码,精度可达2 mso-hansi-font-family:"Times New Roman"">μs "Times New Roman"">。
8、支持光纤或同轴电缆级连输入和输出。
9、GPS/ mso-hansi-font-family:"Times New Roman"">北斗接收天线重点考虑了防雷设计、稳定性设计、抗干扰设计, "Times New Roman"">信号接收可靠性高,不受地域条件和环境的限制。
10、信号输出口均经过光电隔离。
11、有监视本装置运行状态的告警接点输出,包括电源消失告警、外同步信号消失告警、以及本装置自检异常告警。
GPS时钟设备 "Times New Roman"">技术参数
1、环境要求
"Times New Roman"">工作温度:-20 "Times New Roman"">°C--+70 "Times New Roman"">°C
"Times New Roman"">贮存温度:-40 "Times New Roman"">°C--+80 "Times New Roman"">°C
2、电气要求
"Times New Roman"">电源:交流220V "Times New Roman"">±10% 47HZ 63HZ "Times New Roman"">或直流110V/220V
3、电磁兼容性
4、GPS时钟设备
"Times New Roman"">功耗:不大于15W
5、GPS/ mso-hansi-font-family:"Times New Roman"">北斗信号接收器
mso-hansi-font-family:"Times New Roman"">通道:192 "Times New Roman"">通道
mso-hansi-font-family:"Times New Roman"">授时精度:1PPS "Times New Roman"">优于20nS( 1 mso-hansi-font-family:"Times New Roman"">σ)。
mso-hansi-font-family:"Times New Roman"">内部电池:电池类型:锂电池;电池寿命:≮25000h mso-hansi-font-family:"Times New Roman"">。
GPS接收器
mso-hansi-font-family:"Times New Roman"">接收频率(GPS L1 "Times New Roman"">):1575.42MHz "Times New Roman"">(L1信号)。
mso-hansi-font-family:"Times New Roman"">接收灵敏度:捕获〈-160dBW "Times New Roman"">,跟踪〈-163dBW "Times New Roman"">。
mso-hansi-font-family:"Times New Roman"">同时跟踪:正常状态下可同时跟踪8 mso-hansi-font-family:"Times New Roman"">~16 "Times New Roman"">颗GPS卫星;
mso-hansi-font-family:"Times New Roman"">装置冷启动时不小于4 "Times New Roman"">颗卫星;
mso-hansi-font-family:"Times New Roman"">装置热启动时不小于1 "Times New Roman"">颗卫星。
mso-hansi-font-family:"Times New Roman"">捕获时间:装置冷启动时,〈1min "Times New Roman"">;装置热启动时,〈20s "Times New Roman"">。
mso-hansi-font-family:"Times New Roman"">北斗接收器
mso-hansi-font-family:"Times New Roman"">接收频率(BD2 B1 "Times New Roman"">):1561.098 "Times New Roman"">±4MHz。
mso-hansi-font-family:"Times New Roman"">接收机灵敏度:-157.6dBW "Times New Roman"">;
mso-hansi-font-family:"Times New Roman"">速度精度(RMS) "Times New Roman"">:0.1m/s "Times New Roman"">;
6、时间保持单元守时精度:时间保持单元晶体振荡器选用OCXO
mso-hansi-font-family:"Times New Roman"">,守时精度优于7*10-9(0.42
"Times New Roman"">μS/min)
"Times New Roman"">。如选用铷原子钟,守时精度优于1
"Times New Roman"">μS/24小时。