One-key operation Shortcut key design, one- key setup Smart portable OTDR, 4inch TFT LCD display AV6416 palm OTDR has the most advanced technology of double-color & material integrative mould, which is novel and beautiful in appearance.AV6416 offers three wavelengths and VLF in one handheld unit, especially for testing passive optical network (PON) in FTTx. In addition, it's equipped with ...