When a cable is used for PoE, it is important to ensure that DC resistance of all wires is closely matched. Differences of resistance between pairs, or between wires within a pair can cause degradation in RF performance, inadequate PoE power delivery, or excessive heating. TestPro’s 6-second autotest includes full characterization of DC resistance parameters, including loop resistance, resistance unbalance in each pair, along with all combinations of pair-to-pair resistance unbalance.
