OMNISCANNER
The following table summarizes the typical diagnosis process.
NEXT | TDNXT exceeds | Conclusion |
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PASS | N/A | NEXT at link is good |
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FAIL | YES | Connection fails. Replace or |
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| reterminate. Plug and/or jack can be at |
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| fault. |
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FAIL | NO | Cable is not within specifications |
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6.4 TDRL
Return Loss is a measure of the amount of reflected energy in a link. Reflections occur at points of impedance discontinuity, such as connectors, transitions from patch cables to horizontal cables, and impedance structure within a cable.
Return Loss faults are diagnosed by using the TDRL (Time Domain Return Loss) function. OMNIScanner uses TDRL to determine the amount of Return Loss as a function of distance. TDRL with new
While the Return Loss graph shows the link test limits and the frequency at which a failure occurred, the TDRL graph displays Return Loss vs. distance.
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