EXFO AXS-110 All Fiber QUAD OTDR is new generation production for fiber optic LAN/WAN Test, It is easy Location and Characterization of Events, EXFO AXS-110 All-Fiber OTDR helps you boost test productivity for inside-plant applications. Its exceptional 0.8 m event dead zone enables you to easily locate and characterize all events between patch panels within a data center or in-building cabling, where events are usually closely spaced.