校准结果分析

2010-6-25 17:54:12.718 ================= Crystal CAPID calibration begin ================
2010-6-25 17:54:12.718 Agilent 8960 < Band = GSM
2010-6-25 17:54:12.718 Agilent 8960 < cell power = -60.00000
2010-6-25 17:54:13.203 Agilent 8960 < TCH ARFCN = 65
2010-6-25 17:54:13.203 Agilent 8960 < config phase and frequency error.
2010-6-25 17:54:13.812 Agilent 8960 < MS TX level = 12
2010-6-25 17:54:13.812 Target < set Band1900 flag = 0
2010-6-25 17:54:13.843 --------------Crystal AFC pre-check begin ---------------
2010-6-25 17:54:14.109 CAP ID = 0, AFC DAC = 4096, Freq error = 61811.02000
2010-6-25 17:54:14.312 CAP ID = 63, AFC DAC = 4096, Freq error = -35904.49000
2010-6-25 17:54:14.312 --------------Crystal AFC pre-check end -----------------
2010-6-25 17:54:14.625 CAP ID = 63, AFC DAC = 4096, Freq error = -35897.65000
2010-6-25 17:54:14.812 CAP ID = 31, AFC DAC = 4096, Freq error = -2993.71400
2010-6-25 17:54:15. 31 CAP ID = 15, AFC DAC = 4096, Freq error = 23954.85000
2010-6-25 17:54:15.218 CAP ID = 23, AFC DAC = 4096, Freq error = 9182.45800
2010-6-25 17:54:15.421 CAP ID = 27, AFC DAC = 4096, Freq error = 2794.34200
2010-6-25 17:54:15.625 CAP ID = 29, AFC DAC = 4096, Freq error = -194.32660
2010-6-25 17:54:15.828 CAP ID = 28, AFC DAC = 4096, Freq error = 1264.68100
2010-6-25 17:54:15.859 ================= Crystal CAPID calibration end ==================
2010-6-25 17:54:16.0 ================== Crystal CAPID check begin =====================
2010-6-25 17:54:16.187 CAP ID = 29, AFC DAC = 0, Freq error = -25258.35000
2010-6-25 17:54:16.187 PASS: Crystal AFC check: CAP ID = 29,AFC DAC = 0,Freq error PPM = -27.97159,min Freq error PPM = -15.00000,max Freq error PPM = 15.00000
2010-6-25 17:54:16.359 CAP ID = 29, AFC DAC = 8191, Freq error = 25695.89000
2010-6-25 17:54:16.375 PASS: Crystal AFC check: CAP ID = 29,AFC DAC = 8191,Freq error PPM = 28.45614,min Freq error PPM = -15.00000,max Freq error PPM = 15.00000
2010-6-25 17:54:16.375 CAP ID check pass: CAP ID = 29, min CAP ID = 15, max CAP ID = 63
2010-6-25 17:54:16.406 Target< Write crystal AFC CAP ID to NVRAM
2010-6-25 17:54:16.515 CAP ID = 29, AFC DAC = 4096, Freq error = -231.21890
2010-6-25 17:54:16.515 PASS: Crystal AFC check: CAP ID = 29, AFC DAC = 4096, Freq error PPM = -0.25606, min Freq error PPM = -15.00000, max Freq error PPM = 15.00000
2010-6-25 17:54:16.515 ================== Crystal CAPID check end =======================
虽然校准过了 但还是感觉有问题， Freq error PPM =-0.25606 是不是载波频率误差？若是的话他的绝对值是不是过大了，不是应该在0.1ppm之内吗？那应该怎么解决？还有我附了整个log文档 希望资深工程师朋友 看看还有没有其他的问题？

校准文件.rar :

点击下载...

没问题，你还有AFC要校准的！

上面你只是校准了CAP ID而已！

频率校准应该是分两部的吧cap id 只是第一步，下面的afc校的会把那个校的更小了

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