IEC TR 61156-1-2:2009/AMD1:2014 : Title: Amendment 1 - Multicore and symmetrical pair/quad cables for digital communications - Part 1-2: Electrical transmission characteristics and test methods of symmetrical pair/quad cables Pages: 26 Year: Publisher: International Electrotechnical Commission Availability: Within 1-2 working days
IEC will directly send the standards to End-User after our confirmation.