LANcat
User Manual
Page 7-24
Typically, twisted-pair specifications do not address impedance
anomalies. This is primarily because when an application uses
twisted pair, there is a separate transmit pair and receive pair.
Anomalies are more important to consider when the same wire is
used for both transmit and receive (for example, coax cable).
The following table describes some common Length problems and
solutions.
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 specification regarding
anomalies and all other parameters are within
specification, the segment should be fine.
The anomaly threshold was chosen by
Datacom Textron to aid you in cable
troubleshooting. If you do not desire to view
the anomalies, increase the threshold settings
(refer to Chapter 8, Set Up).
The length
measurement is
not accurate
Check that the NVP is correct.
If requiring the best accuracy, you must
calibrate the unit with a sample of the cable.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com