This part of IEC 61196 applies to coaxial communications cables. It specifies test methods for determining the impedance of coaxial communications cables with time domain reflectometry (TDR).
IEC 61196-1-116:2015 history
2015IEC 61196-1-116:2015 Coaxial communication cables - Part 1-116: Electrical test methods - Test for impedance with time domain reflectometry (TDR)