NK6000 PON OTDR adopts 5.6 inch color screen,doubleoperation of key and touch.It has a max dynamic range of 45dB,and can penetrate 1:32 optical splitter in PON network test;the whole machine integrates Visual FaultLocation,Event Map,Optical Power Meter,Light Source,Optical Loss Test,Optical End Face Detection functions,multi-functional integration to help customers eficiently solve the field test and maintenance. It is mainly used to measure the length,loss,connectionquality and other parameters of allkinds ofoptical fiber andcable.It can be widely used in engineering construction,emergency repair of communication systemof opticalfibercommunication system,development and production mea-surement ofoptical fiber cable.