UNE-EN IEC 61300-3-53/AC
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-53: Examinations and measurements - Encircled angular flux (EAF) measurement method based on two-dimensional far field data from multimode waveguide (including fibre) (Endorsed by Asociación Española de Normalización in August of 2023.)