常见告警处理流程

BTSCOECHINA1DECEMBER2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOE常见报警信息及处理DRIALARM73/7886，87，9192150234，23524321，29，37，74192，193BTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOEAlarm•Motorola的基站系统有一套完善的报警机制，充分利用报警信息，可有效地提高系统维护效率。•检查实时Alarm:通过在H2SC上执行disp_act_alarmsite#发现该site此时正在发生的Alarm信息。Sample•自动显示实时alarm信息alarm_modesite#on•检查某个载频的alarm历史信息。通过在H2SC上执行如下命令进入Emon模式（Ctrl+N）Rloginsubsystem#CPU#TCU_Alarm_ReadAll返回H2SCemon(Ctrl+D)返回H2SCMMI（Ctrl+N）Sample1Sample2BTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOE•DRI73&DRI78及其产生机理•VSWR及其衡量标准•BTS发射通路连接图•告警处理流程BTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOEDRI73&DRI78及其产生机理•DRI78发射天线驻波比过高：DUP内置电路检测7/16”射频头处的发射/反射功率，没有信号发射时不检测，接收天线不检测。过高的VSWR将导致小区覆盖半径缩小、掉话率过高。•DRI73反射功率过高：发射通路发生严重故障将导致此告警。过长时间的高反射将不可避免地损坏CTU，所以它的检测周期比DRI78短。告警产生几秒钟后CTU将自动复位，所以处理故障时需要适当降低输出功率。BTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOEVSWR及其衡量标准•驻波:当天线和CTU的阻抗完全匹配时，信号将最大化地被天线发射出去。通常是不可能做到完全匹配的，就产生了前向波和反向波，它们组合在一起就形成了驻波。•VSWR驻波比定义：驻波的最大电平和最小电平的比值，它的大小是从1：1到∞:1•反射系数Γ=•回波损耗RL=,通常以dB表示，也可以作为衡量标准ZoZZoZreflectedfowardPPBTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOEVSWR及其衡量标准11RLRLVSWR||1||1VSWR1.13-1.38是VSWR衡量标准16-24dB是相应的RL衡量标准告警产生的判定标准是2.61的VSWR或7dB(+/-1dB)的RLBTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOEDUP7/16”SMACTU2HorizonIIBTS机柜机柜外射频通路N-型ANTRXTX天线馈线避雷器及阻抗变换天线射频尾线7/16”发射通路连接图BTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOE故障处理流程必备工具：•VSWR测量仪表•合适的扭矩扳手•笔记本及串口线•50欧姆/50w的假负载BTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOE故障处理流程误告警：由现场维护引起的告警，告警仅出现一次，出现时有DoorAlarm告警。•短暂出现的告警，可能是由于遮挡物或遮挡信号引起的。•由于相邻的天线耦合过来过大的反射功率，这是由于天线安装不正确引起的，要保证1米的间隔。•不要轻易更换CTU,通常VSWR告警并不是由它引起的。BTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOE故障处理流程有DRI78或DRI73告警串接VSWR测量仪表在天馈线系统之前，反射功率是否过高？反射功率是否过高是直接将假负载连在DUP上，检查告警否更换DUPVSWR告警检查SMA射频线、CTU2以及DUP的SMA连接头，必要时需更换无VSWR告警使用50欧姆的假负载代替天馈线把假负载连到前一级输出是替换前一级部件否有VSWR或DRI73告警检查天馈线系统及其连接，必要时需更换没有告警检查DUP的VSWRDRI78或DRI73告警是否依然存在完成是否反射功率是否过高否检查天馈线系统及其连接，必要时需更换是BTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOE故障处理流程检查告警CTU2的反射功率：•退服CTU2•串接VSWR测量仪表在DUP和天馈线系统之间，确保连接牢固•CTU2以最大功率发射(tsatxp00)•读发射/反射功率，用alarm_cardcab察看告警•如果VSWR超出容限，alarm_cardcab命令显示txvswr为全1，按照定位VSWR故障步骤定位故障•如果VSWR没有超出容限，alarm_cardcab命令显示全1，检查DUP故障•如果VSWR没有超出容限，alarm_cardcab命令显示全0，但有DRI73告警，可能是由其它原因导致的告警。BTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOEalarm_cardcabBTSCOECHINA15November2004MOTOROLACONFIDENTIALPROPRIETARY,FileName,RevNumberMOTOROLAandtheStylizedMLogoareregisteredintheUSPatent&TrademarkOffice.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©Motorola,Inc.2002.GTSS-BTSCOE故障处理流程定位VSWR故障：•关闭CTU2的射频输出(tsatxp0xff)•断开户外天馈线系统，用假负载代替•CTU2以最大功率发射(tsatxp00)•检查VSWR,如果没有超出容限，可以断定是天馈线系统故障，通常是天线进水或密封不好•如果超出容限，将假负载向前移一级•检查VSWR,如果超出容限