Fluke DTX-1800, Technical Reference Handbook, Page: 154 / 398

DTX Series CableAnalyzer
Technical Reference Handbook
6-10
The HDTDR Analyzer
The HDTDR ™ (High-Definition Time Domain Reflectometry)
analyzer plots the locations and magnitudes of reflections
caused by impedance anomalies. The analyzer, along with
the tester’s automatic diagnostics, helps you isolate the
causes of return loss failures.
Running the HDTDR Analyzer
After an Autotest, you can view HDTDR results if the
Autotest test failed or had a PASS* result, or if HDTDX/
HDTDR in Setup is set to All AUTOTESTs.
To see HDTDR results for failed Autotest, select HDTDR on
the Autotest Summary screen.
To run the HDTDR test as a single test:
Note
Though you can run the HDTDR analyzer without
a smart remote, the following steps assume you
are using a remote.
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 HDTDR
Analyzer; then press
P
.
5 To run the HDTDR 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 HDTDR plot will
not be included in saved results.
Figure 6-3 describes the HDTDR analyzer plot.
Recognizing Faults on HDTDR Plots
Figure 6-4 on page 6-12 shows how some common faults
appear on HDTDR plots.