最近在测试GSMRRU信号的时候，刚开始开通的时候没发现驻波比告警，但是在通话过程中发现占到TCH时，接收电平马上变为-90，怀疑是参数设置问题，或者是施工工艺不好。结果到第二天才出现驻波比告警，在重新整理天馈线后恢复正常。有个疑问，驻波比是可以驻留的吗？为什么隔一天才出现告警？

关于驻波比的问题 - 问通信专家

首先，确定是这个原因导致的；
一般是不会有所谓的“驻留”的。如果告警系统没有时延的话。怀疑的主要方向还是天馈系统的问题。因为这部分的工艺水平和质量对整个系统都有至关重要的作用。天线就是“辫子”啊。再好的设备“辫子”不好也不行啊！

希望对你有帮助！
谢谢！

回答者：cindy_4　回答时间：2010-03-04 15:08

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9

可能为开始是好的，风吹了下就不好了，一般情况驻波告警会在最长半个小时内出现的。

回答者：hunan_ren　回答时间：2010-03-04 15:30

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是华为设备吗，要是站点开通后测试1小时的空闲时隙，如果有驻波应该就会出告警的

回答者：lishaohai1982　回答时间：2010-03-04 16:29

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驻波比是不驻留的，可能是接头松动或是线的弯曲度过大，第一天已经接近或刚达到告警门限，设备有个冗余度，没告出来，第二天某一时刻达到临界值引发告警。

回答者：dc_shelf　回答时间：2010-03-04 17:51

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驻波比是不驻留的，可能是接头松动或是线的弯曲度过大，第一天已经接近或刚达到告警门限，设备有个冗余度，没告出来，第二天某一时刻达到临界值引发告警。

回答者：dc_shelf　回答时间：2010-03-04 17:51

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同意楼上的观点

回答者：smdsk　回答时间：2010-03-05 08:58

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同意dc_shelf的答案的观点

回答者：js156　回答时间：2010-03-05 09:55

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华为的就这驻波告警不好

回答者：zjl337100　回答时间：2010-03-05 11:13

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有种极端的可能：天馈施工工艺不好，接头进水，刚开时比较分散，经历一段时间高话务，街头发热水分蒸发，空闲时水蒸气冷却后水滴集中在馈头，驻波比超限出告警。

回答者：zhy5　回答时间：2010-03-05 11:57

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可能是馈线的接头没做好！！！

回答者：xhxman　回答时间：2010-03-05 13:33

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楼主，什么是GSMRRU啊？占用TCH、又是华为RRU？不懂啊？

回答者：jxlhqs010　回答时间：2010-03-05 17:02

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可能是我表达不清楚。华为的2G设备，RRU，配置是2/2/2,在打电话的时候，占用一扇区的主B没问题，但是占用一扇区TCH就出现电平值瞬间下降的问题。

wle168168 2010-03-05 17:17

TCH通道驻波比测下。
天馈是否有鸳鸯线

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2010-09-26 02:09

2010-09-26 02:09

可能是你遇见的驻波比强度刚好到了影响业务但还不到触发告警的门限吧。

回答者：dqlin　回答时间：2010-03-05 21:57

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