爱立信的故障代码2A:57
时间：04-21
整理：3721RD
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如题。
那样治标不治本，2a57 应该是天线的问题
您的描述不清楚
像 什么机柜
什么cdu
还有别的故障代码吗？
CF 2A57 一定是天线的问题吗？
2A 33呢？涉及的问题有很多呢？
楼上的664483？？？？
为什么说2A57一定是天馈问题呢？如何确定？ 出现2A57什么设备为多呢？肯定是06设备多。如果是06设备多为CDU-F！单一出现一个2A57好处理，如伴有2A33哪就有“可能”是天馈问题！
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SO CF I |
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RX path imbalance（接收通路不平衡） |
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AO RX I |
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AO RX I |
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AO RX I |
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AO RX I |
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AO TX I1B:35 - RX path imbalance |
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SO CF RU:40 - Antenna |
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This fault occurs together with a pinpointed antenna, if the difference in signal strength between two antennas in the same antenna system exceeds the limits defined using the OMT function Define RX Path Imbalance Parameters. If the class 1 limit is exceeded, the related fault AO TX I1B:35 is also raised and the TX will be disabled.（这个故障的产生是在一个天线系统中两个天线的信号强度差异超出OMT中规定的门限，注意一个天线系统是指OMT上软件定义的Antenna system，两个天线的概念注意是否双极化天线） The supervision of this fault is based on measurements over a long time duration, hence the fault does not cease as soon as the fault condition is corrected. The RX imbalance monitor must therefore be used to verify the correction of the fault condition.（要处理这个故障必须解决故障产生的条件，因为它是持续进行监测的） When the fault condition has been corrected, reset the TRU to cause the fault to terminate immediately.（当处理掉产生故障的条件后，重启TRU故障立即消失） Observe, If the fault condition was not corrected, the fault will be reported again when at least the minimum number of samples has been collected. The minimum number of samples is defined by the Define RX Path Imbalance Parameters function in the OMT.（如果故障产生的条件没有处理好，那么在收集到信号样本后会重新出现） |
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Follow the instructions below until the fault is corrected: |
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Check the defined RX path invariance limits using the Define RX Path Imbalance Parameters function in the OMT for the faulty antenna system.（检查OMT中Antenna Supervision Parameters的门限设置） |
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Check the TX cables/feeders, cable connections inside and outside the cabinet and antennas, for example with Antenna System SWR tests. For information about how to perform a SWR test see Verifying Antenna Systems or Antenna System Tests in the CPI for the relevant RBS.（检查天馈系统，可以做驻波测试来核实） |
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Reset the TRU（重启TRU） |
支持一楼的答案