Black Box TS1002A, TS1003A, TS1000A-R5 manual Tdrl, Next

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.

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