IEC 61300-3-39-2011
光导纤维转接设备和无源部件基本试验和测量规程.第3-39部分:检查和测量.回波损耗测量用直接接触(PC)光连接器基准插头选择
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-39: Examinations and measurements - Physical Contact (PC) optical connector reference plug selection for return loss measurements