User's Manual

Table Of Contents
Chapter 6 Maintenance and Troubleshooting
Troubleshooting
T-BERD/MTS 5800 Getting Started Manual
99
Optical Overload
Protection is
activated
When testing on an optical circuit, the instrument displays a
warning that the Optical Overload Protection is activated, or
the instrument does not detect a signal.
Verify that the applied power does not exceed the power level
supported by the connected transceiver. If it does, attenuate
the signal.
Test results are
inconsistent
Verify the following:
Verify that your instrument is connected to the circuit
properly for the test you are running. For details, see
“Connecting the T-BERD MTS 5800 to the circuit” on
page 36. This is the primary reason for inconsistent test
results.
Verify that your transceivers and cables are good and are
connected properly for the test you are performing.
Verify that you have inserted the correct transceiver for
the circuit you are testing. SFPs and XFPs are designed
to support different line rates and interfaces.
Verify that the correct timing source is selected on the
Interface setup screen.
Verify that the correct line rate for the interface is
selected.
If you are running SONET or SDH applications, verify that
the correct mapping, tributaries, and analysis rates are
selected.
If an object or person coming in contact with the test set
causes a temporary burst of errors to be recorded, the
errors might have been caused by an ESD event. The
recorded errors can be cleared by pressing Test Restart.
Please note that the test set is fully compliant with IEC
61326-1 ESD requirements for industrial equipment and
has passed testing according to IEC 61000-4-2 using test
limits of 4 kV/8 kV contact/air and performance
criterion B.