Specifications

Chapter 4 Diagnostics and Troubleshooting Installation and Operation Manual
4-2 Technical Support FOM-E3/ETH, FOM-T3/ETH Ver. 1.0
4.2 Troubleshooting Instructions
In case a problem occurs, refer to Table 4-1 for the troubleshooting procedures.
Perform the actions listed under
Corrective Measures in the order given in the
table, until the problem is corrected.
Table 4-1. Troubleshooting Chart
Trouble Symptoms Probable Cause Corrective Measures
PWR indicator is OFF No AC power Verify that the power outlet is providing the required
power.
Ensure that the both ends of the power cable are
connected properly.
Blown fuse Replace with a fuse of correct rating
Optical ERR indicator
is ON
No optical connection Ensure that both transmit and receive fiber cables are
properly connected to the local and remote units.
The optical budget is low Measure the optical loss over the fiber link and check
that it meets the product specifications.
OPTICAL AIS is ON The equipment attached
to the remote unit
transmits "All 1s" string
Check the equipment attached to the remote
FOM-E3/ETH or FOM-T3/ETH
4.3 Technical Support
Technical support for this product can be obtained from the local distributor from
whom it was purchased.
For further information, please contact the RAD distributor nearest you or one of
RAD's offices worldwide. This information can be found at
www.rad.com (offices
– About RAD > Worldwide Offices; distributors – Where to Buy > End Users).