The OP940-SW multi-channel plug back loss tester can test MPO/MTP connectors, equipped with a color LCD screen, The light reflection scanning function can be set to PASS/FAIL standard and provides assistance on screen. At the same time, this series of instruments can simultaneously measure the return loss at two different positions through the front panel. Like other OPTOTEST insertion loss instruments, this series of instruments quickly and accurately measure loss without the need for manual winding or matching paste. Single mode, multi mode,The FTTX version is available for selection. It uses high-quality MEMS optical switches for fast and accurate multi-channel testing. The number of channels ranges from 4 to 24. The openable front panel is designed specifically for cleaning the light source end face,Minimize the repair time of instruments caused by damage to the light source during mass production.