... 0.5,1,2,4,8,16mDistance range0.4,0.8,1.6,3.2,6.4,16,32,64, ... 128,256,512km(SMF);0.4,0.8,1.6, ... 3.2,6.4,16,32 (MMF of 850nm ... . JX8002 offers three measuring modes: manual mode (including real time mode and average mode), auto mode and dead zone ... this measurement mode, to get more accurate results, real-time mode or average mode can be selected if necessary. ...