OneExpert DSL User's Guide
22052280, Rev. 015
April 2019
Chapter
13 Copper Testing
191
NOTE:
The TDR must be running for Stress Mode to be available. It is
grayed out when the TDR is stopped.
Locating faults using the TDR
The Time Domain Reflectometer (TDR) feature helps locate cable faults. The TDR identifies
bridged taps, wet sections, load coils, shorts, opens, and splices on the span.
1. Connect the Tip (A), Ring (B), and Ground (Earth) leads to the line under test.
2. From the Copper menu, press the
TDR
button. The TDR graph appears.
3. To change the TDR mode, press the
Mode
system key, and then select
Standard TDR,
In Home TDR
(does not include Pulse Width),
SmartGain TDR, OneCheck TDR
or
Crosstalk TDR
.
4. If running
In Home TDR
, twist the
cables for more consistent impedance.
5. To change the cable type, select the
Options
system key, and then select
Cable Type
.
6. To add a DC pulse in order to see changes in the graph, select the
Options
system key,
and then select
Stress
. The spike or dip will shift when the pulse is applied.
A warning appears during the stress pulse to indicate higher voltage is present.
7. Using the Peak Hold mode, the OneExpert DSL can display minimum, maximum, and
current TDR traces over a test period. This feature is useful for analyzing faults that
occur intermittently. To enable Peak Hold mode, select the
Options
system key and
then check the
Peak Hold
checkbox.
8. To adjust the
Gain
or
Pulse Width
, either drag the line across the bar or press the + or -
buttons to adjust it.
Gain is used to identify small or distant faults. Using the + or -
buttons
to gain the
vertical axis and enhance the reflection of faults. Do not apply excessive gain. This
makes a normal condition appear as a fault.
Pulse Width only appears when
Pulse Width
is selected on the Options pop-up menu
(from the
Options
system key).
9. To help identify small or distant faults, use the up or down arrow keys to gain the
vertical axis and enhance the reflection of faults. Do not apply excessive gain. This
makes a normal condition appear as a fault.
Summary of Contents for OneExpert DSL ONX-580
Page 1: ...OneExpert DSL User s Guide ...
Page 6: ...OneExpert DSL User s Guide 22052280 Rev 015 April 2019 vi ...
Page 78: ...Chapter 3 Utilities OneExpert DSL User s Guide 22052280 Rev 015 April 2019 78 ...
Page 138: ...Chapter 6 Ethernet TE Testing OneExpert DSL User s Guide 22052280 Rev 015 April 2019 138 ...
Page 144: ...Chapter 7 Wiring Tools OneExpert DSL User s Guide 22052280 Rev 015 April 2019 144 ...
Page 158: ...Chapter 9 WiFi Testing OneExpert DSL User s Guide 22052280 Rev 015 April 2019 158 ...
Page 172: ...Chapter 11 Testing with SmartIDs OneExpert DSL User s Guide 22052280 Rev 015 April 2019 172 ...
Page 224: ...Chapter 13 Copper Testing OneExpert DSL User s Guide 22052280 Rev 015 April 2019 224 ...
Page 236: ...Chapter 14 Fiber Testing OneExpert DSL User s Guide 22052280 Rev 015 April 2019 236 ...
