The main test items are wire dc resistance, unbalanced circuit resistance test, dc, ac withstand voltage test and insulation resistance, capacitance testing, capacitance loss test, and capacitance unbalance, crosstalk attenuation and crosstalk defense degree test, the primary and secondary cable transmission parameters test, coaxial cable of the attenuation test, attenuation coefficient of temperature test, as well as the defense effect coefficient test, and so on.
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