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CHAPTER 8: Testing Twisted-Pair Cable
Test Results
Possible Solutions
Anomaly
Check distance to anomaly. Go to distance indicated and
check for obvious problem (for example, splice in cable,
couplers, kink or bend in cable, bad connection).
Re-terminate the segment to eliminate the problem. If the
problem continues, make sure other parameters, such as
attenuation, are within limits. If they are, check the specification
you are testing to. If nothing is mentioned in the specification
regarding anomalies and all other parameters are within
specification, the segment should be fine.
The anomaly threshold was chosen to aid you in cable
troubleshooting. If you do not want to view the anomalies,
increase the threshold settings (refer to
Chapter 9, Setup
).
The length
Check that the NVP is correct.
measurement is
not accurate
For the most accurate measurement, you must calibrate the
unit with a sample of the cable.
SCAN-LAN VI
Make sure cable is connected to SCAN-LAN VI.
will not display a
Disconnect the remote unit or any other equipment from the
length
far end of the cable.
measurement
If the cable is less than five feet, the SCAN-LAN VI
displays “Cable < 5 feet.”
If the cable is longer than 2,000 feet, the SCAN-LAN VI
indicates the cable is too long to measure.
Summary of Contents for SCAN-LAN VI
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