The AQ7275 Optical Time Domain Reflectometer (OTDR), is ideal for use in a wide variety of optical fiber installation and maintenance applications. Increased efficiency and a quick start-up help to maximize time spent on operations. With the 10-second startup, the AQ7275 OTDR is ready to perform when you are. Improvements to this generation of Optical Time Domain Reflectometer offer a better variety of options and greater value for our customers.The best outcome of our improvements: Enhanced Measurement Performance. Yokogawas Optical Time Domain Reflectometer has improved to suit your changing needs: Wide Range of Modules Available Supporting FTTH to Metro, Core Network High Dynamic Range (45dB) Short Dead Zone (0.8 m)