qdyizhuo
青岛一卓光电科技有限公司|光纤熔接机OTDR
一般为正常曲线图， A 为盲区， B 为测试末端反射峰。测试曲线为倾斜的，随着距离 的曾长，总损耗会越来越大。用总损耗（ dB ）除以总距离（ Km ）就是该段纤芯的平均 ...
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