Home / Standards / GB/T 15972.40-2024 GB/T 15972.40-2024 Active Specifications for optical fibre test methods—Part 40:Measurement methods and test procedures for transmission characteristics—Attenuation 光纤试验方法规范 第40部分:传输特性的测量方法和试验程序 衰减 Standard Type GBT ICS 33.180.10 CCS M 33 Status 现行 Issue Date 2024-11-28 Implementation 2025-03-01 Responsible Dept 工业和信息化部(通信) Drafting Unit N/A