... characteristics of optical fiber AV6416 Palm OTDR (FTTx network tester) AV6416 palm OTDR is the newest instrument ... designed for testing FTTx network. It's mainly used to measure the ... n one handheld unit, especially for testing passive optical network (PON) in FTTx. In addition, it’s ... Dead Zone ≤1.6m Applicable Fiber Single-mode Distance Range 4, 8, 16, 32, 64, 128, 256km ...