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MT6223D+AD6548 AFC cal fail

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刚刚接触MTK平台,不太熟,请各给资深工程师帮忙分析一下看是什么原因,以下是用meta校准的log信息:
2011-3-17 18:46:38.812 ID = 0
2011-3-17 18:46:38.828 =============== Write initial value to flash begin ===============
2011-3-17 18:46:38.906 Targetread GMSK level ramp from NVRAM.
2011-3-17 18:46:40.406 Target < write GMSK level ramp to NVRAM.
2011-3-17 18:46:40.468 Target < write ADC to NVRAM.
2011-3-17 18:46:40.468 ================ Write initial value to flash end ================

2011-3-17 18:46:40.609 ================= Crystal CAPID calibration begin ================
2011-3-17 18:46:40.640 Agilent 8960 < Band = GSM
2011-3-17 18:46:40.640 Agilent 8960 < cell power = -60.00000
2011-3-17 18:46:40.984 Agilent 8960 < TCH ARFCN = 65
2011-3-17 18:46:41.0 Agilent 8960 < config phase and frequency error.
2011-3-17 18:46:41.515 Agilent 8960 < MS TX level = 12
2011-3-17 18:46:41.515 Target < set Band1900 flag = 0
2011-3-17 18:46:41.531 --------------Crystal AFC pre-check begin ---------------
2011-3-17 18:46:41.828 CAP ID = 0, AFC DAC = 4096, Freq error = 99100000000000005190000000000000000000.00
2011-3-17 18:46:42. 93 CAP ID = 63, AFC DAC = 4096, Freq error = 99100000000000005190000000000000000000.00
2011-3-17 18:46:42.156 --------------Crystal AFC pre-check end -----------------
2011-3-17 18:46:42.281 ================== Crystal CAPID check begin =====================
2011-3-17 18:46:42.515 CAP ID = 63, AFC DAC = 0, Freq error = 99100000000000005190000000000000000000.00
2011-3-17 18:46:42.515 PASS: Crystal AFC check: CAP ID = 63,AFC DAC = 0,Freq error PPM = 109745293466223708500000000000000000.0000,min Freq error PPM = -15.00000,max Freq error PPM = 15.00000
2011-3-17 18:46:42.750 CAP ID = 63, AFC DAC = 8191, Freq error = 99100000000000005190000000000000000000.00
2011-3-17 18:46:42.750 PASS: Crystal AFC check: CAP ID = 63,AFC DAC = 8191,Freq error PPM = 109745293466223708500000000000000000.0000,min Freq error PPM = -15.00000,max Freq error PPM = 15.00000
2011-3-17 18:46:42.953 CAP ID = 63, AFC DAC = 4096, Freq error = -36696.09000
2011-3-17 18:46:42.953 FAIL: Crystal AFC check: CAP ID = 63, AFC DAC = 4096, Freq error PPM = -40.63797, min Freq error PPM = -2.00000, max Freq error PPM = 2.00000

所有板子都这样还是某个是这样
capid pre check 就fail了,如果所有板子都这样,确认下校准文件有没有问题。

不好意思,最近我也遇到了这个问题。有没有知道怎么解?MT6223D+AD6548+SKY77542,Crystal AFC 误测率高!, 不好意思,最近我也遇到了这个问题。有没有知道怎么解压?MT6223D+AD6548+SKY77542,Crystal AFC 误测率高!

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