Pathloss出现奇怪的问题

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AFC Calibration time=6.49 (sec)
PL GSM850 TCH 140 = 0.50Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 150 = -0.50Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 160 = -0.75Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 170 = 0.00Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 180 = 0.88Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 190 = 1.12Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 200 = 1.00Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 210 = 0.38Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 220 = -0.38Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 230 = -0.25Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 240 = 0.62Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 251 = 1.88Pass MAX:6.00 MIN:-6.00
PL GSM TCH 15 = 4.75Pass MAX:6.00 MIN:-6.00
PL GSM TCH 30 = 1.62Pass MAX:6.00 MIN:-6.00
PL GSM TCH 40 = 1.25Pass MAX:6.00 MIN:-6.00
PL GSM TCH 50 = 2.88Pass MAX:6.00 MIN:-6.00
PL GSM TCH 60 = 4.38Pass MAX:6.00 MIN:-6.00
PL GSM TCH 70 = 5.00Pass MAX:6.00 MIN:-6.00
PL GSM TCH 80 = 4.88Pass MAX:6.00 MIN:-6.00
PL GSM TCH 95 = 3.00Pass MAX:6.00 MIN:-6.00
PL GSM TCH 110 = 0.88Pass MAX:6.00 MIN:-6.00
PL GSM TCH 124 = 1.75Pass MAX:6.00 MIN:-6.00
PL GSM TCH 1000 = 2.25Pass MAX:6.00 MIN:-6.00
PL GSM TCH 1023 = 6.12Failed MAX:6.00 MIN:-6.00
PL DCS TCH 550 = -0.38Pass MAX:6.00 MIN:-6.00
PL DCS TCH 580 = 0.12Pass MAX:6.00 MIN:-6.00
PL DCS TCH 610 = 0.62Pass MAX:6.00 MIN:-6.00
PL DCS TCH 640 = 0.88Pass MAX:6.00 MIN:-6.00
PL DCS TCH 670 = 0.88Pass MAX:6.00 MIN:-6.00
PL DCS TCH 700 = 0.88Pass MAX:6.00 MIN:-6.00
PL DCS TCH 730 = 0.38Pass MAX:6.00 MIN:-6.00
PL DCS TCH 760 = 0.00Pass MAX:6.00 MIN:-6.00
PL DCS TCH 790 = -0.38Pass MAX:6.00 MIN:-6.00
PL DCS TCH 820 = -0.38Pass MAX:6.00 MIN:-6.00
PL DCS TCH 850 = -0.25Pass MAX:6.00 MIN:-6.00
PL DCS TCH 885 = 0.62Pass MAX:6.00 MIN:-6.00
PL PCS TCH 540 = 2.38Pass MAX:8.00 MIN:-6.00
PL PCS TCH 565 = 2.00Pass MAX:8.00 MIN:-6.00
PL PCS TCH 590 = 1.12Pass MAX:8.00 MIN:-6.00
PL PCS TCH 615 = 0.38Pass MAX:8.00 MIN:-6.00
PL PCS TCH 640 = 0.12Pass MAX:8.00 MIN:-6.00
PL PCS TCH 665 = 0.88Pass MAX:8.00 MIN:-6.00
PL PCS TCH 690 = 2.00Pass MAX:8.00 MIN:-6.00
PL PCS TCH 715 = 2.62Pass MAX:8.00 MIN:-6.00
PL PCS TCH 740 = 2.88Pass MAX:8.00 MIN:-6.00
PL PCS TCH 765 = 2.38Pass MAX:8.00 MIN:-6.00
PL PCS TCH 790 = 1.38Pass MAX:8.00 MIN:-6.00
PL PCS TCH 810 = 0.88Pass MAX:8.00 MIN:-6.00
Path Loss Calibration OK
Pathloss Calibration time=13.01 (sec)
校准时pass loss 在
PL GSM TCH 1023 = 6.12Failed MAX:6.00 MIN:-6.00
好奇怪，几块板子都这样？

找到原因了么？

关注一下

这样的问题很奇怪的么？信令模式去call一下看看，看看你的RX LEVEL和灵敏度是否正常？这个肯定是主板上有干扰的嘛。特别注意一下LCD。

你这个板子接收都好差啊？你没有调接收匹配吗？从你板子整体情况看，出现这问题很正常啊，就不是个特殊问题，调匹配去吧

5#的资深工程师，我去调下了，谢谢了

真是很差

900的普遍不好，调匹配。

......

我也遇到过这样的问题，个人认为是器件的差异引起的。

修改匹配后OK

PL GSM850 TCH 240 = 1.75Pass MAX:6.00 MIN:-6.00
PL GSM850 TCH 251 = 2.12Pass MAX:6.00 MIN:-6.00
PL GSM TCH 15 = 1.38Pass MAX:6.00 MIN:-6.00
PL GSM TCH 30 = 1.50Pass MAX:6.00 MIN:-6.00
PL GSM TCH 40 = 2.00Pass MAX:6.00 MIN:-6.00
PL GSM TCH 50 = 2.25Pass MAX:6.00 MIN:-6.00
PL GSM TCH 60 = 2.25Pass MAX:6.00 MIN:-6.00
PL GSM TCH 70 = 2.00Pass MAX:6.00 MIN:-6.00
PL GSM TCH 80 = 1.50Pass MAX:6.00 MIN:-6.00
PL GSM TCH 95 = 1.38Pass MAX:6.00 MIN:-6.00
PL GSM TCH 110 = 1.88Pass MAX:6.00 MIN:-6.00
PL GSM TCH 124 = 2.00Pass MAX:6.00 MIN:-6.00
PL GSM TCH 1000 = 2.75Pass MAX:6.00 MIN:-6.00
PL GSM TCH 1023 = 2.25Pass MAX:6.00 MIN:-6.00
PL DCS TCH 550 = -0.88Pass MAX:6.00 MIN:-6.00
PL DCS TCH 580 = -0.50Pass MAX:6.00 MIN:-6.00
PL DCS TCH 610 = -0.12Pass MAX:6.00 MIN:-6.00
PL DCS TCH 640 = 0.00Pass MAX:6.00 MIN:-6.00