IMC Networks E1 - Manual (Page 18)

15
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.