Fluke DSX-600 CableAnalyzer Troubleshooting Handbook page 17

Copper cabling
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This time we have a NEXT of 28.9 dB with a margin of -6.0 dB at 267.0 MHz. So to find
out where this is happening along the cable, we need to run the HDTDX diagnostic test.
We see the results for this on figure 14. Again we view the worst pair 3,6-4,5 and we see
the far end connector far exceeds the ideal of 30%, it's nearly 60%. So, we could re-
terminate the connector which may allow the link to pass. However, if we further analyze
the HDTDX trace, we also see that there are many aberrations along the cable that exceed
our ideal 10%. So the likely recommendation would be to change the cable which would
also mean remaking the far-end termination. This should now result in a NEXT PASS.
Figure 14
HDTDX shows crosstalk all along the cable
17

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