B&B Electronics 850-18100--27 - Manual - Manual (Page 19)

16
Pseudorandom Bit Sequence (PRBS) Testing
To test using PRBS, configure the IE-iMcV-T1/E1/J1-LineTerm, TP/SFP modules
for No Loopback, and then configure the Transmit Copper Data Source to PRBS.
Configure the local device for Loopback and start the test. Verify the PRBS LED is
ON indicating no errors are being received.
Installation Troubleshooting
General Troubleshooting
• The copper port can easily be tested using the internal PRBS signal generator
and detector and a physical wire loop on the copper interface.
• The fiber port is internally tested at all times by a working pair of units. With
one unit configured for Local Management (S3-2 set OFF) and the other for
Remote Management (S3-2 set ON), the fiber line is verified if the RM LED is
ON at both ends of the fiber line. Under normal operation only the RM LED is
ON at both HOST and REMOTE.
• To test a media converter by itself, first verify that the fiber patch cable is
appropriate, then follow these steps to test:
1. Connect the media converter to the RJ-48 device with a copper cable.
2. Loop a single strand of fiber from the transmit port to the receive port of
the media converter.
3. Verify that there is a valid connection for both the RJ-48 and fiber ports on
the media converter. (No ER or LOS LED ON)
• If there is trouble with link connectivity, verify that the cable connection and
DIP Switch settings are correct.