关于手机射频校准

liluhua83

在射频测试工位，校准都能正常通过，等到开始综测时，手机电流上不去，MOBILE_CAMP_GSM测试项就通不过，请问是什么原因？如何解决呢？补充：电源用的是Motech

huangkewei

手机电流上不去???
手机能正常开机吗？？？[em14]

nicklew

手动开机试试。。

fengmo44

电源限流了 ？

liluhua83

以下是引用fengmo44在2009-7-21 14:29:08的发言：
电源限流了 ？

当然限流设置那是肯定要的，不过设置1.5A，不影响开机的。另外，校准时是可以开机的，要不然怎么通信呢?!就是在综测开始，手机与CMU同步时电流上不去
S$$5002401*MTK_ADC_Slope,5512.00 &5250.00 $5600.00 N5425.00 M
S$$5002402*MTK_ADC_Offset,16.00 &-1000000.00 $1000000.00 N0.00 M
S!%5002403*MTK_ADC_Save_ADC_Slope_Offset,0.00 &0.00 $0.00 N0.00 M
S$$5002404*MTK_ADC_CurrDiff,0.00 &0.00 $0.04 N0.02 M
S$$5002405*MTK_ADC_VoltageDiff,0.00 &0.00 $0.04 N0.02 M
S!%50024*MTK_ADC,0.00 &0.00 $0.00 N0.00 M
S!%20028*DELAY_0S,0.00 &0.00 $0.00 N0.00 M
S!%50004*DISCONNECT_WITH_TARGET,0.00 &0.00 $0.00 N0.00 M
S!%30000*SWITCH_POWER_OFF,0.00 &0.00 $0.00 N0.00 M
S!%50002*PHASE_RESET_TESTSET,0.00 &0.00 $0.00 N0.00 M
S!%20028*DELAY_0S,0.00 &0.00 $0.00 N0.00 M
S!%30001*SWITCH_POWER_ON,0.00 &0.00 $0.00 N0.00 M
S!%70001*CALL_SETUP_GSM_DCS,0.00 &0.00 $0.00 N0.00 M
S!%30012*CONFIG_TESTSET_NETWORK,0.00 &0.00 $0.00 N0.00 M
S!%30013*OPEN_TESTSET_ACTON,0.00 &0.00 $0.00 N0.00 M
S!%20032*DELAY_10S,0.00 &0.00 $0.00 N0.00 M
S!%70002*MOBILE_CAMP_GSM,1.00 &0.00 $0.00 N0.00 M
S!%20028*DELAY_0S,0.00 &0.00 $0.00 N0.00 M
S!%50003*PHASING_SETUP,0.00 &0.00 $0.00 N0.00 M
S!%30000*SWITCH_POWER_OFF,0.00 &0.00 $0.00 N0.00 M
S!%20002*OPEN_PARALLEL_FIXTURE,0.00 &0.00 $0.00 N0.00 M

liluhua83

找到原因了，好像motech电源带负载能力不行，在供电两端加了个大电容，问题就解决了

ryanlee007

负载能力跟加大电容有啥关系啊,电容顶多让电源输出平稳些.
校准模式是非完全开机状态,综测试开机,电流瞬间可能到2mA, 1.5A的limit并不合适.
同步不上去,跟BS single强度,外界信号干扰等都是有关系的.

liluhua83

以下是引用ryanlee007在2009-7-24 11:41:12的发言：
负载能力跟加大电容有啥关系啊,电容顶多让电源输出平稳些.
校准模式是非完全开机状态,综测试开机,电流瞬间可能到2mA, 1.5A的limit并不合适.
同步不上去,跟BS single强度,外界信号干扰等都是有关系的.

学习了。。。

xutongqiang

是的，不明白？楼主说清楚啊