Diagnosing Copper Cabling Faults
The HDTDX Analyzer
6-9
6
The HDTDX Analyzer
The HDTDX
â„¢
(High-Definition Time Domain Crosstalk)
analyzer plots the locations and magnitudes of crosstalk on
the cabling under test. The analyzer, along with the tester’s
automatic diagnostics, helps you isolate the causes of NEXT
and ELFEXT failures.
Running the HDTDX Analyzer
After an Autotest, you can view HDTDX results if the
Autotest test failed or had a PASS* result, or if HDTDX/
HDTDR in Setup is set to All AUTOTESTs.
To see HDTDX results for a failed Autotest, select HDTDX
Analyzer on the Autotest Summary screen.
To run the HDTDX analyzer as a single test:
Note
You can run the HDTDX analyzer with or without
a smart remote. Without a remote, results on short
cables may be unreliable.
1
Turn the rotary switch to SINGLE TEST and verify that
the test limit and cable type are correct. Change them
in SETUP if necessary.
2
Attach the appropriate interface adapters to the tester
and smart remote.
3
Turn on the smart remote; then connect the tester and
remote to the cabling.
4
Turn the rotary switch to SINGLE TEST, select HDTDX
Analyzer; then press P.
5
To run the HDTDX analyzer continuously, press L
Plot by Pair to select a pair; then press
H to start the
scanning function.
6
To save the results, press N. Select or create a cable ID;
then press
N again.
Note
If Store Plot Data is set to No, the HDTDX plot will
not be included in saved results.
Figure 6-1 describes the HDTDX plot.
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