Specification for the testing of balanced and coaxial information technology cabling Part 1: Installed balanced cabling as specified in the standards series EN 50173 (IEC 61935-1:2009, modified); German version EN 61935-1:2009
平衡和同轴信息技术电缆测试规范第1部分:标准系列EN 50173(IEC 61935-1:2009 修改)中规定的已安装平衡电缆;德文版EN 61935-1:2009