DIN EN 61300-3-21:2017 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-21: Examinations and measurements - Switching time (IEC 86B/4040/CD:2016)
2021DIN EN IEC 61300-3-21:2021 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-21: Examinations and measurements - Switching time (IEC 61300-3-21:2019); German version EN IEC 61300-3-21:2019
2017DIN EN 61300-3-21:2017 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-21: Examinations and measurements - Switching time (IEC 86B/4040/CD:2016)
2016DIN EN 61300-3-21:2016 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); German version EN 61300-3-21:2015