Copper Line Tests: Difference between revisions
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→More info on Loop and resistance faults: clean up |
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*'''Earth Contact fault''' The line is going to earth. The line may be damaged and wire touching earth somewhere |
*'''Earth Contact fault''' The line is going to earth. The line may be damaged and wire touching earth somewhere |
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*'''Rectified Loop fault''' a one way loop - check internal wiring before going further. |
*'''Rectified Loop fault''' a one way loop - check internal wiring before going further. |
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**Some further info here: https://groups.google.com/forum/#!topic/uk.telecom/QdsxWT3QcvQ |
**Some further info here: https://groups.google.com/forum/#!topic/uk.telecom/QdsxWT3QcvQ and see the notes below: |
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*'''High Resistance DIS fault''' Both lines have high resistance - some connection problem along the line. |
*'''High Resistance DIS fault''' Both lines have high resistance - some connection problem along the line. |
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If you get a Copper line test error, try the test again with all equipment unplugged, and the NTE5 faceplate removed as the fault could be caused by local wiring or equipment. |
If you get a Copper line test error, try the test again with all equipment unplugged, and the NTE5 faceplate removed as the fault could be caused by local wiring or equipment. |
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More info on Loop and resistance faults |
==More info on Loop and resistance faults== |
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Loop fault is a symmetric low DC resistance between A/B wires in the pair. Rectified loop fault is an asymmetric low DC resistance between A/B, as-if there's a diode shorting the fault. |
Loop fault is a symmetric low DC resistance between A/B wires in the pair. Rectified loop fault is an asymmetric low DC resistance between A/B, as-if there's a diode shorting the fault. |
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