英飞凌校准AFC失败，请有经验的前辈指点一下

05-08

各位前辈大家好，本人第一次接触英飞凌平台，而在射频校准时出现AFC失败，请帮忙指点问题原因，万分感谢！
测试log如下：
Trying to establish DUT linking...Done.
----> Calibrating AFC...
Calibrate AFC on band GSM900
XoTune = 8191, XoCal[1] = 0 -> F_Err[1] = 39835.29
XoTune = 8191, XoCal[2] = 7 -> F_Err[2] = -128.21
XoCal = 7
-- XoTune Loop #1
XoCal = 7, XoTuneMin = 7691 -> F_Err_Min = -2599.67
XoCal = 7, XoTuneMax = 8691 -> F_Err_Max = -37589.45
XoCal = 7, XoTune = 7616 -> F_Err = -2996.42
-- XoTune Loop #2
XoCal = 7, XoTuneMin = 7116 -> F_Err_Min = -5467.89
XoCal = 7, XoTuneMax = 8116 -> F_Err_Max = -582.13
XoCal = 7, XoTune = 8235 -> F_Err = -39865.98
-- XoTune Loop #3
XoCal = 7, XoTuneMin = 7735 -> F_Err_Min = -2484.03
XoCal = 7, XoTuneMax = 8735 -> F_Err_Max = -37484.23
XoCal = 7, XoTune = 7664 -> F_Err = -2868.82
-- XoTune Loop #4
XoCal = 7, XoTuneMin = 7164 -> F_Err_Min = -5338.29
XoCal = 7, XoTuneMax = 8164 -> F_Err_Max = -450.82
XoCal = 7, XoTune = 8256 -> F_Err = -39869.90
-- XoTune Loop #5
XoCal = 7, XoTuneMin = 7756 -> F_Err_Min = -2486.28
XoCal = 7, XoTuneMax = 8756 -> F_Err_Max = -37488.88
XoCal = 7, XoTune = 7684 -> F_Err = -2872.39
-- XoTune Loop #6
XoCal = 7, XoTuneMin = 7184 -> F_Err_Min = -5339.61
XoCal = 7, XoTuneMax = 8184 -> F_Err_Max = -454.56
XoCal = 7, XoTune = 8277 -> F_Err = -39867.34
============================================
Diag Information
--------------------------------------------
Err:
================= END ==================

ULC1 ULC2 ULC3?

同问?

工具Flash tool+测试ATE+META工具全面介绍.pdf

为什么XoCal 一直是7，我记得这个值要调整的，另外xotune 8191应该是最大值，刚开始的时候建议用中间值试比较合理，好久没做了，要看看代码，说的不知道对不对

了解的太少，看不懂，真遗憾

先查找你的硬件问题，看一下你的26MHz的晶体是不是有问题，先看晶体上面的丝印是否和BOM上面的一样，如果有个别数字或者字母不一样，那可能就是你的晶体问题了

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