Home / Standards / GB/T 46385.21-2025 GB/T 46385.21-2025 Active Optical circuit boards—Part 2-1: Basic test and measurement procedures—Optical attenuation and isolation measurements 光路板 第2-1部分:基本试验和测量程序 光衰减与隔离度测量 Standard Type GBT ICS 33.180.99 CCS M33 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A