NF C93-537-1-11*NF EN 50289-1-11:2017 Communication cables - Specifications for test methods - Part 1-11 : electrical test methods - Characteristic impedance, input impedance, return loss
2017NF C93-537-1-11*NF EN 50289-1-11:2017 Communication cables - Specifications for test methods - Part 1-11 : electrical test methods - Characteristic impedance, input impedance, return loss