"Times New Roman"">北斗同步时钟服务器的主要功能
1.装置采用全模块化即插即用结构设计,支持板卡热插拔,配置灵活,维护方便,同时为将来电厂/ mso-hansi-font-family:"Times New Roman"">变电站改造扩建时增加或更改对时信号接口提供了方便;
2. 基于我国自主的北斗卫星导航系统, mso-hansi-font-family:"Times New Roman"">采用北斗GPS "Times New Roman"">双系统互为备用设计;
3.完善的北斗和GPS mso-hansi-font-family:"Times New Roman"">卫星信号监测,自动或手动选择卫星信号;
4.自动跟踪北斗和GPS mso-hansi-font-family:"Times New Roman"">卫星信号,提供互为备份的授时服务;
5.输出高精度1PPS mso-hansi-font-family:"Times New Roman"">、1PPM "Times New Roman"">、1PPH信号,授时精度优于20ns mso-hansi-font-family:"Times New Roman"">;
6.支持NTP/SNTP网络时间传输协议,用于网络授时
7.支持ARP mso-hansi-font-family:"Times New Roman"">、ICMP "Times New Roman"">、HTTP协议;
8.支持在NTP mso-hansi-font-family:"Times New Roman"">协议上的MD5 "Times New Roman"">认证授时;
9.提供IRIG-B mso-hansi-font-family:"Times New Roman"">(DC "Times New Roman"">)码、1PPS "Times New Roman"">、1PPM、1PPH mso-hansi-font-family:"Times New Roman"">、串口RS232/485 "Times New Roman"">等对时接口;
10.支持上万个用户的网络授时服务
11.提供基于RS232 mso-hansi-font-family:"Times New Roman"">和网口UDP "Times New Roman"">协议的两种输出方式,同时输出周波、工频钟、时间信息
12.支持本地和远程管理。
13.GPS/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。
14.机箱经防磁处理,抗干扰能力强。
"Times New Roman"">北斗同步时钟服务器的技术指标
1.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"">。
2.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"">;
3.电 "Times New Roman"">源:95~265V mso-hansi-font-family:"Times New Roman"">交流;110 "Times New Roman"">~250V直流,直流/ mso-hansi-font-family:"Times New Roman"">交流自适应。可配置双电源。
4.IRIG-B mso-hansi-font-family:"Times New Roman"">(DC "Times New Roman"">)时间码:TTL "Times New Roman"">或RS422接口;B(AC) mso-hansi-font-family:"Times New Roman"">码,调制比3:1 , "Times New Roman"">幅度0~10VP-P mso-hansi-font-family:"Times New Roman"">可调,阻抗600 "Times New Roman"">Ω,平衡输出( "Times New Roman"">不共地),B mso-hansi-font-family:"Times New Roman"">(DC "Times New Roman"">)码同步准确度小于1 "Times New Roman"">μS,B mso-hansi-font-family:"Times New Roman"">(AC "Times New Roman"">)码同步准确度小于12 "Times New Roman"">μS。
5.脉冲输出:TTL mso-hansi-font-family:"Times New Roman"">电平接口,正脉冲上升沿有效,信号脉冲宽度200ms mso-hansi-font-family:"Times New Roman"">。空接点反压DC300V,
mso-hansi-font-family:"Times New Roman"">定时准确度:接收GPS "Times New Roman"">时,小于0.1 "Times New Roman"">微秒。接收B(DC mso-hansi-font-family:"Times New Roman"">)码时,小于1 "Times New Roman"">微秒。
6.NTP/SNTP网络授时: mso-hansi-font-family:"Times New Roman"">局域网:≤ 10 mS "Times New Roman"">;城域网:≤ 50mS "Times New Roman"">。
7.平均无故障间隔时间(MTBF) mso-hansi-font-family:"Times New Roman"">≥80000 "Times New Roman"">小时;平均维修时间(MTTR "Times New Roman"">)≤30分。正常使用条件下无需维护。
8.箱体结构尺寸: mso-hansi-font-family:"Times New Roman"">标准1U/2U "Times New Roman"">高,19英寸宽机架安装。
"Times New Roman"">更多北斗同步时钟服务器介绍,敬请参阅上海锐呈电气有限公司网站