The MW9076 series is a small and lightweight optical time domain reflectometer (mini-OTDR) for measuring loss and locating faults in optical fiber cables at fiber installation and maintenance. It has excellent basic performance specifications including a dynamic range of 45 dB and a world-beating backscatter dead zone of just 8 m. For the best price performance, the series includes four types of main frame, two types of optical channel selector unit and two types of display unit.