IEC 61280-4-1 Amd. 1 Ed. 3.0 b:2021

IEC 61280-4-1 Amd. 1 Ed. 3.0 b:2021 Amendment 1 to Fibre-optic communication subsystem test procedures - Part 4-1: Installed cabling plant - Multimode attenuation measurement

Amendment by International Electrotechnical Commission, 12/01/2021