... lithium battery with high capacity for over 8 hours of operating life ο Visible fault locating (VFL) and optical power meter ο Universal ... 0.75m + sample space + measurement distance×0.003%)1Sampling resolution0.05,0.1,0.2,0.5,1,2,4,8,16mDistance range0.4,0.8 ... long distance for fiber under test. ο Printing trace and event table ο Updating application software on-line JIAXUN High Performance Optical ...