DIN EN 61753-092-6-2008 光纤互连装置和无源元件性能标准.第092-6部分:O类非连接单模循环器.未受控环境和连续试验
Fibre optic interconnecting devices and passive components performance standard - Part 092-6: Non-connectorized single-mode circulators for category O - Uncontrolled environment and sequential test (IEC 61753-092-6:2007); German version EN 61753-092-6:200