Fibre optic interconnecting devices and passive components - Basic test and measurement procedures -- Part 3-21: Examinations and measurements - Switching time ( IEC 61300-3-21:2014) (english version)
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-4: Examinations and measurements - Attenuation— 35 стр.
Fibre organisers and closures to be used in optical fibre communication systems - Product specifications - Part 3-5: Wall outlet; German version EN 50411-3-5:2015— 25 стр.
