DIN EN 61300-3-21 E:2017-02 草案 光纖互連設備和無源元件 基本測試和測量程序 第3-21部分:檢查和測量 切換時間 (IEC 86B/4040/CD:2016)
Draft Document - 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)