T-C880 Cable Fault Locator

タイトルまたは説明

    Connecting the instrument and pressing a , you can get the distance to fault. The T-C**0 cable fault locator, a highly intelligent instrument, makes the dream of every cable maintenance people come true. Utilizing the latest microelectronics and digital signal processing techniques, T-C**0 has internal gain control and impedance balancing capability, and can automatically calculate distance to fault. It is an ideal fault location and integrity testing instrument for telecom and control cables.

    T-C**0 applies pulses simultaneously to the line and balance outputs and displays the differential between resulting two signals. A switch allows the balance output to be applied to either a second (healthy) or an internal balance circuit simulating wave impedance of the cable tested. The direct mode of operation uses internal balance that will cancel the outgoing pulse in displayed trace to make fault reflection easily recognizable. The differential mode provides significant reduction in common distortion, an occurrence common with twisted cables, resulting in clean, easy to read traces. For high resistance fault like poor insulation, T-C**0 uses bridge mode to locate fault. We can regard the cable is composed by many resistors, if we can measure the value of resistance from the detecting point to fault point, use this value divided by cable length, we will get the distance to fault.