请求高手帮忙 老急了MT6572+MT6166 做WCDMA BAND1 2 5 现在BAND2灵敏度低信道 中信...

lcYFL13

MT6572+MT6166 做WCDMA BAND1 2 5 现在BAND2灵敏度低信道 中信道-106  高信道-98   匹配值换了一堆了 没有什么改善 很不敏感？求高手帮忙
双工器是MURATA的
而且现在校准起来也有问题
/16 14:04:25.968 [GPIB] ----RCT_WCDMA_AGC_PreSetting----
2013/12/16 14:04:25.968 [GPIB] CALL:CHANnel 9700;*OPC?
2013/12/16 14:04:25.984 [GPIB] 0: 1
2013/12/16 14:04:25.984 CWcdmaAgcClass::DutRssiMeasurement(): UARFCN: 9700, LNA mode: 0
2013/12/16 14:04:25.984 Gain value: 57.000 (dB)
2013/12/16 14:04:26.046 CWcdmaAgcClass::DutRssiMeasurement() main_ant = -385
2013/12/16 14:04:26.046 CWcdmaAgcClass::DutCheckLnaMode() Check LNA mode: 0
2013/12/16 14:04:26.109 CWcdmaAgcClass::DutCheckLnaMode() Get LNA mode: 0
2013/12/16 14:04:26.109 CWcdmaAgcClass::TesterChangeChannel() 9800
2013/12/16 14:04:26.109 [GPIB] ----RCT_WCDMA_AGC_PreSetting----
2013/12/16 14:04:26.109 [GPIB] CALL:CHANnel 9800;*OPC?
2013/12/16 14:04:26.125 [GPIB] 0: 1
2013/12/16 14:04:26.125 CWcdmaAgcClass::DutRssiMeasurement(): UARFCN: 9800, LNA mode: 0
2013/12/16 14:04:26.125 Gain value: 57.000 (dB)
2013/12/16 14:04:26.187 CWcdmaAgcClass::DutRssiMeasurement() main_ant = -402
2013/12/16 14:04:26.187 CWcdmaAgcClass::DutCheckLnaMode() Check LNA mode: 0
2013/12/16 14:04:26.218 CWcdmaAgcClass::DutCheckLnaMode() Get LNA mode: 0
2013/12/16 14:04:26.218 CWcdmaAgcClass::TesterChangeChannel() 9869
2013/12/16 14:04:26.218 [GPIB] ----RCT_WCDMA_AGC_PreSetting----
2013/12/16 14:04:26.218 [GPIB] CALL:CHANnel 9869;*OPC?
2013/12/16 14:04:26.234 [GPIB] 0: 1
2013/12/16 14:04:26.234 CWcdmaAgcClass::DutRssiMeasurement(): UARFCN: 9869, LNA mode: 0
2013/12/16 14:04:26.234 Gain value: 57.000 (dB)
2013/12/16 14:04:26.296 CWcdmaAgcClass::DutRssiMeasurement() main_ant = -392
2013/12/16 14:04:26.296 CWcdmaAgcClass::DutCheckLnaMode() Check LNA mode: 0
2013/12/16 14:04:26.359 CWcdmaAgcClass::DutCheckLnaMode() Get LNA mode: 0
2013/12/16 14:04:26.359 CWcdmaAgcClass::TesterChangeChannel() 9938
2013/12/16 14:04:26.359 [GPIB] ----RCT_WCDMA_AGC_PreSetting----
2013/12/16 14:04:26.359 [GPIB] CALL:CHANnel 9938;*OPC?
2013/12/16 14:04:26.359 [GPIB] 0: 1
2013/12/16 14:04:26.359 CWcdmaAgcClass::DutRssiMeasurement(): UARFCN: 9938, LNA mode: 0
2013/12/16 14:04:26.359 Gain value: 57.000 (dB)
2013/12/16 14:04:26.390 CWcdmaAgcClass::DutRssiMeasurement() main_ant = -405
2013/12/16 14:04:26.390 CWcdmaAgcClass::DutCheckLnaMode() Check LNA mode: 0
2013/12/16 14:04:26.453 CWcdmaAgcClass::DutCheckLnaMode() Get LNA mode: 0
2013/12/16 14:04:26.453 CWcdmaAgcClass::TesterChangePower() -45.000000
2013/12/16 14:04:26.453 [GPIB] ----RCT_WCDMA_AGC_PreSetting----
2013/12/16 14:04:26.453 [GPIB] CALL:CELL:POWER:SAMPLITUDE -45.0;*OPC?
2013/12/16 14:04:26.468 [GPIB] 0: 1
2013/12/16 14:04:26.468 CWcdmaAgcClass::TesterChangeChannel() 9662
2013/12/16 14:04:26.468 [GPIB] ----RCT_WCDMA_AGC_PreSetting----
2013/12/16 14:04:26.468 [GPIB] CALL:CHANnel 9662;*OPC?
2013/12/16 14:04:26.484 [GPIB] 0: 1
2013/12/16 14:04:26.484 CWcdmaAgcClass::DutRssiMeasurement(): UARFCN: 9662, LNA mode: 1
2013/12/16 14:04:26.484 Gain value: 30.000 (dB)
2013/12/16 14:04:26.546 CWcdmaAgcClass::DutRssiMeasurement() main_ant = -329
2013/12/16 14:04:26.546 [*Error*] path loss over/under flow, -128 <= 149 <= 127
WCDMA_AGC_GAIN_OFFSET_OVERFLOW => 53

##


Calibration and NSFT total cost time is: 140.67s
校准的时候 不是所有的板子都是这样的  一部分校准不过；  ATE校准不过的 有些META 能校准的过 PATHLOSS  不大  +_4左右
如果不校准BAND2 校准能顺利通过  

测试点 是焊线 在板子上面校准的  
不知道有没有人遇到过同样的问题  



请求高手帮忙  项目催着要结果 等着量产  
先谢谢了！

lcYFL13

高手 帮忙啊
大家都没有遇到？
我中奖了

d371423110

别急，静等高手

ytb522

是否是双工到收发器之间的的共模干扰导致，在双工器和收发器之间并联匹配处加个器件到地试一试。如C2115

lcYFL13

我们就留了个PI匹配  其他的3个没有留啊

guody2007

等等高手，不用急！

nxsawtech

同等高手。高手都死光了吗？！？！

yntx2011

[em01]                     

gook2009

4楼正解，调下那个T形匹配就ok了。

gxmojixian

学习了！！！

nwg2351567

需要加那个T型匹配的。

lcYFL13

问题解决了 软件问题

jimmywhy

lcYFL13 发表于 2014-3-24 20:13
问题解决了 软件问题

请教一下楼主，软件问题是modem参数问题还是什么问题知道不

dengzheng89

MODEM参数问题吗？

jjyy2jjyy2

lcYFL13 发表于 2014-3-24 20:13
问题解决了 软件问题

楼主能说下软件什么问题吗。

xinkai1990

楼主能说下软件怎么解决的？？

felix123

操                                      

xq1072

次奥   是软件什么问题啊[em18]

willy

LZ真不厚道，问别人问题就那么着急，自己解决问题了就不肯分享下经验！

chenyaoxing

围观学习，thanks for share[em01]