Through adopting high-powered hardware and convenient software, VIEW500 OTDR shortens installation time, debugging and fiber distance maintenance. The main function of VIEW500 is for fiber fault diagnosis, especially aiming at FTTH applications. Besides basic OTDR functions, optical power meter and light source function for fiber evaluation is also internally installed. VIEW500 also has a visual light source (VFL) option function. Through the visual light source, it can do visualization inspection of fiber bends and fiber ruptures in dead zone.