Chapter 3
Calibration, Configuration, and Special Operations
3-44
Applications of TDR
Cable Inspection
Situation Activity
New Wiring Installation The wiring contractor installs horizontal and
backbone cables/wires in accordance with a
Communication Cable Specification and supplied
blueprints.
Cable Testing All Autotest results are supplied in hard copy and
on disk to the owner.
Final Inspection Contractor and owner conduct final inspection.
Final Acceptance Owner accepts installation.
Office equipment installed by
owner
One of the telecommunications outlets appears to be
faulty.
Owner informs a wiring contractor
of bad cable
The wiring contractor sends a technician out to
investigate.
Technician performs Autotest and
TDR on the failed network drop
A wire pair fails the Crosstalk test. TDR indicates
an anomaly at 100 feet from the patch panel. The
current TDR graph (with anomaly) is saved.
Contractor checks the cable at 100
feet out from the
telecommunications closet
The contractor finds a fire extinguisher mounting
bracket on the cubicle wall. A bracket mounting
screw has damaged the cable jacket.
Owner is informed that the
problem is not related to a faulty
cable or installation
Repairs can be authorized by the owner. The
contractor will invoice time and materials.
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