KS C IEC 61280-1-4:2022 Fibre optic communication subsystem test procedures — Part 1-4: General communication subsystems — Light source encircled flux measurement method
2022KS C IEC 61280-1-4:2022 Fibre optic communication subsystem test procedures — Part 1-4: General communication subsystems — Light source encircled flux measurement method
0000 KS C IEC 61280-1-4-2007(2017)
2007KS C IEC 61280-1-4:2007 Fibre optic communication subsystem test procedures-Part 1-4:General communication subsystems-Collection and reduction of two-dimensional nearfield data for multimode fibre laser transmitters