Viavi OneExpert DSL ONX-580, User Manual

Page: 181 / 282

OneExpert DSL User's Guide
22052280, Rev. 015 April 2019
Chapter 13 Copper Testing
181
What’s new?
If your OneExpert is configured and optioned to do so, the following features are now
available:
• OneCheck TDR – The OneCheck TDR allows you to use the OneExpert to locate the
Copper faults and automatically identify them.
• UltraFED Control – If you are running TDR, RFL, Multimeter, or TIMS tests using
a UFEDII or UFEDIIB as a far end device, you can now control the device from your
instrument. For details, see “Testing with an UltraFED far end device” on page 208 .
• Wideband Balance Sweep – This feature regulates how well a copper pair rejects
noise.
• Wideband Sweep Loss – This feature measures attenuation (loss) at different
frequencies.
• Resistive Balance – This feature allows the user to test and compare the resistance
of each lead used as a pair with ground as the reference. The result can be used to
determine if there are any bad splices. Resistive Balance requires the Viavi UltraFED
or a manual strap to ground at the far end.
• Crosstalk TDR (for ONX-580P only) – This new mode for TDR is used to locate
where one pair is “split” or cross connected with another. It requires identifying
which pairs are involved, connecting the ONX Yellow/Blue and Red/Black leads to
these pairs, and running the Crosstalk TDR.
The trace will show where the pairs are “split” and “re-split”. The pulse is sent on the
Yellow/Blue leads and listens on the Red/Black leads.
• OneCheck Copper Good Pair – This test checks the quality of a pair by running
voltage, resistance, capacitance and other tests. It gives a Pass/Fail assessment for
each test configured to run.
• OneCheck Copper with UFEDIIB – Same as the first test, but we are also using the
Viavi UltraFED to achieve two ended testing, which is required for tests like resistive
balance, tone loss, etc.
• Copper Expert – This is an interactive copper line testing and troubleshooting
application that runs a series of consecutive tests, allowing the user to find and fix
problems in the process.
• OneCheck Copper Editor – This application provides access to all profile
management tasks.
NOTE:
In order to convert capacitance (Opens), resistance, and TDR
results to the correct length for your country, make sure your
country and type of cable are selected in the
System Settings / International menu. See Configuring
International Settings on page xx.