An OTDR is a powerful tool that helps technicians and engineers assess the health of fiber optic cables. OTDR testing analyzes fiber optic cable performance from end to end by testing components along the cable, including connection points, bends, and splices. What Is an OTDR? What Is an OTDR? An OTDR is. An optical time-domain reflectometer (OTDR) is an optoelectronic instrument used to characterize an optical fiber. Yokogawa's OTDR portfolio spans handheld units for installation and maintenance, high-end models for core metro and data center interconnection applications, and remote OTDR. There are a variety of optical test sets that can be used to ensure quality of service (QoS) on fiber optic networks, but only the Optical Time Domain Reflectometer (OTDR) supports singled ended fiber testing to characterize fibers when measuring total loss, optical return loss (ORL), latency and.
[PDF Version]