This standard applies to the measurement of the average value of the real part of the characteristic impedance of the manufacturing length coaxial pair by the resonance method. The test frequency range is 0.06 ~ 10MHz. The test frequency range can be expanded under the condition that the test equipment allows.
1985GB/T 5441.5-1985 Test methods for communication cable--Characteristic impedance test of coaxial pair--Resonance method
GB/T 5441.5-1985 Test methods for communication cable--Characteristic impedance test of coaxial pair--Resonance method was changed to GB/T 5441-2016 Test methods for communication cable.