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OMNISCANNER
The following table summarizes the typical diagnosis process.
NEXT TDNXT exceeds Conclusion
S-Band limits
PASS N/A NEXT at link is good
FAIL YES Connection fails. Replace or
reterminate. Plug and/or jack can be at
fault.
FAIL NO Cable is not within specifications
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 S-band technology (Standard Connector
Band technology) can help you to distinguish and between connection faults and
cable faults. It assists you with diagnosis and troubleshooting of Return Loss
failures and the verification of test cables, connectors, and plugs.
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.