Viavi OneExpert DSL ONX-580, User Manual

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Chapter 16 Appendix
OneExpert DSL User's Guide
22052280, Rev. 015 April 2019 276
Cleaning the instrument
The instrument itself does not require any specialized cleaning. An occasional wipe with a damp
cloth is sufficient.
NOTE:
When cleaning the instrument, use a damp cloth and water
only. Cleaning with chemicals could cause damage to the
plastic case, buttons, or removal of markings.
Resolving problems
If you are having trouble with the OneExpert, the following sections describe common
problems and solutions. You should verify whether your problem is listed here before
contacting technical assistance.
General testing
• Inconsistent test results – Verify that your test leads are good and are
connected properly for the test you are performing.
Copper testing
• The Tip-Ring voltage is reading negative – The Tip and Ring test leads may be
swapped. Check your test leads to verify that they are hooked up properly.
• I am performing an Opens test. The mutual value looks good, but the Tip
and Ring values are really short – Verify the ground. The module must be
grounded to the same ground as the pair under test.
Copper testing
• The modem cannot achieve sync with the CO – Inability to sync can have
many causes. Perform the following steps to troubleshoot:
- Disconnect the customer’s DSL modem.
- Verify tester connection to the correct pair.
- Verify the Data mode.