"Times New Roman"">標(biāo)準(zhǔn)1U/2U
"Times New Roman"">工業(yè)機(jī)架式機(jī)箱,經(jīng)防磁處理。采用模塊化設(shè)計(jì),插拔式卡槽安裝。支持雙鐘冗余,支持多種輸入源冗余(例如,一臺時鐘即可完成GPS
mso-hansi-font-family:"Times New Roman"">、北斗、上級同步網(wǎng)信號輸入的冗余)。
GPS時鐘設(shè)備 "Times New Roman"">的特點(diǎn)
1、與外同步時鐘信號同步精度高,同步精度優(yōu)于±0.1 mso-hansi-font-family:"Times New Roman"">μs "Times New Roman"">。采用多同步源自適應(yīng)同步技術(shù),同步精度優(yōu)于±20ns "Times New Roman"">。
2、采用冗余結(jié)構(gòu)
mso-hansi-font-family:"Times New Roman"">支持雙GPS "Times New Roman"">北斗熱備和雙IRIG-B "Times New Roman"">熱備且裝備有高精度守時時鐘。標(biāo)準(zhǔn)時間同步鐘本體可同時接入GPS "Times New Roman"">北斗和2路IRIG-B mso-hansi-font-family:"Times New Roman"">碼外同步信號,互為備用。時標(biāo)信號擴(kuò)展裝置可同時接入2 mso-hansi-font-family:"Times New Roman"">路IRIG-B "Times New Roman"">碼外同步信號,互為備用。主時鐘和信號擴(kuò)展裝置都可采用了冗余化裝置,保證了GPS "Times New Roman"">北斗時間同步系統(tǒng)的可靠性和穩(wěn)定性。
3、模塊化設(shè)計(jì),多種輸出接口,使用靈活方便。
mso-hansi-font-family:"Times New Roman"">可輸出IRIG-B(AC) "Times New Roman"">碼、IRIG-B(DC) "Times New Roman"">碼、可定義的時分秒脈沖空接點(diǎn)、時間報(bào)文信息,NTP/SNTP "Times New Roman"">網(wǎng)絡(luò)授時信號,每12 "Times New Roman"">路為一組,可組合。裝置可輸出84 "Times New Roman"">路。
mso-hansi-font-family:"Times New Roman"">采用2U "Times New Roman"">、19”標(biāo)準(zhǔn)機(jī)箱,可單獨(dú)組屏,為將來GPS mso-hansi-font-family:"Times New Roman"">北斗時間同步信號的擴(kuò)展提供了方便,便于維護(hù)和管理。
4、雙CPU mso-hansi-font-family:"Times New Roman"">并行處理時間報(bào)文輸出技術(shù)
mso-hansi-font-family:"Times New Roman"">時間報(bào)文輸出采用了雙CPU "Times New Roman"">并行處理技術(shù),報(bào)文發(fā)送時刻為秒的準(zhǔn)時沿,誤差不大于+10 "Times New Roman"">μs。
5、高精度脈沖輸出
mso-hansi-font-family:"Times New Roman"">脈沖輸出采用脈沖大電流發(fā)生電路,使光電隔離空接點(diǎn)能輸出高精度的脈沖信號,誤差不大于0.1 mso-hansi-font-family:"Times New Roman"">μs "Times New Roman"">。
6、高精度守時時鐘
mso-hansi-font-family:"Times New Roman"">采用閉環(huán)控制守時技術(shù)實(shí)現(xiàn)高精度守時時鐘,守時精度可達(dá)到1 mso-hansi-font-family:"Times New Roman"">μs/h "Times New Roman"">。
7、采用無過沖IRIG-B(AC)碼產(chǎn)生技術(shù),產(chǎn)生高精度的IRIG-B(AC)碼,精度可達(dá)2 mso-hansi-font-family:"Times New Roman"">μs "Times New Roman"">。
8、支持光纖或同軸電纜級連輸入和輸出。
9、GPS/ mso-hansi-font-family:"Times New Roman"">北斗接收天線重點(diǎn)考慮了防雷設(shè)計(jì)、穩(wěn)定性設(shè)計(jì)、抗干擾設(shè)計(jì), "Times New Roman"">信號接收可靠性高,不受地域條件和環(huán)境的限制。
10、信號輸出口均經(jīng)過光電隔離。
11、有監(jiān)視本裝置運(yùn)行狀態(tài)的告警接點(diǎn)輸出,包括電源消失告警、外同步信號消失告警、以及本裝置自檢異常告警。
GPS時鐘設(shè)備 "Times New Roman"">技術(shù)參數(shù)
1、環(huán)境要求
?? "Times New Roman"">工作溫度:-20 "Times New Roman"">°C--+70 "Times New Roman"">°C
?? "Times New Roman"">貯存溫度:-40 "Times New Roman"">°C--+80 "Times New Roman"">°C
2、電氣要求
?? "Times New Roman"">電源:交流220V "Times New Roman"">±10%? 47HZ? 63HZ "Times New Roman"">或直流110V/220V
3、電磁兼容性
4、GPS時鐘設(shè)備
"Times New Roman"">功耗:不大于15W
5、GPS/ mso-hansi-font-family:"Times New Roman"">北斗信號接收器
mso-hansi-font-family:"Times New Roman"">通道:192 "Times New Roman"">通道
mso-hansi-font-family:"Times New Roman"">授時精度:1PPS "Times New Roman"">優(yōu)于20nS( 1 mso-hansi-font-family:"Times New Roman"">σ)。
mso-hansi-font-family:"Times New Roman"">內(nèi)部電池:電池類型:鋰電池;電池壽命:≮25000h mso-hansi-font-family:"Times New Roman"">。
GPS接收器
mso-hansi-font-family:"Times New Roman"">接收頻率(GPS L1 "Times New Roman"">):1575.42MHz "Times New Roman"">(L1信號)。
mso-hansi-font-family:"Times New Roman"">接收靈敏度:捕獲〈-160dBW "Times New Roman"">,跟蹤〈-163dBW "Times New Roman"">。
mso-hansi-font-family:"Times New Roman"">同時跟蹤:正常狀態(tài)下可同時跟蹤8 mso-hansi-font-family:"Times New Roman"">~16 "Times New Roman"">顆GPS衛(wèi)星;
????????? mso-hansi-font-family:"Times New Roman"">裝置冷啟動時不小于4 "Times New Roman"">顆衛(wèi)星;
????????? mso-hansi-font-family:"Times New Roman"">裝置熱啟動時不小于1 "Times New Roman"">顆衛(wèi)星。
mso-hansi-font-family:"Times New Roman"">捕獲時間:裝置冷啟動時,〈1min "Times New Roman"">;裝置熱啟動時,〈20s "Times New Roman"">。
mso-hansi-font-family:"Times New Roman"">北斗接收器
mso-hansi-font-family:"Times New Roman"">接收頻率(BD2 B1 "Times New Roman"">):1561.098 "Times New Roman"">±4MHz。
mso-hansi-font-family:"Times New Roman"">接收機(jī)靈敏度:-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、時間保持單元守時精度:時間保持單元晶體振蕩器選用OCXO
mso-hansi-font-family:"Times New Roman"">,守時精度優(yōu)于7*10-9(0.42
"Times New Roman"">μS/min)
"Times New Roman"">。如選用銣原子鐘,守時精度優(yōu)于1
"Times New Roman"">μS/24小時。
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