IMC Networks iMcV-DS3/E3/STS-LineTerm Operation Manual page 13

Pseudorandom Bit Sequence (PRBS) Testing
To test using the internal Pseudorandom Bit Sequence source, ensure that the Central
Office and the Customer Premises equipment are configured for loopback. The
iMcV-DS3/E3/STS-LineTerm modules should be set to normal default mode. On the
HOST iMcV-DS3/E3/STS-LineTerm module, set the Transmit Coax Data Source to
"Transmit Pseudorandom Sequence" (S1-6, S1-7=OFF). Verify the PRBS LED comes
ON at the HOST iMcV-DS3/E3/STS-LineTerm module to validate the coax wire
connections to the Central Office. Verify the PRBS LED comes ON at the REMOTE
iMcV-DS3 module to validate the coax wire connections at the Customer Premises
equipment and the fiber line going to the REMOTE iMcV-DS3/E3/STS-LineTerm
module. The fiber line returning from the remote iMcV-DS3/E3/STS-LineTerm
module is validated by verifying the RM LED is ON at the HOST iMcV-DS3/E3/STS-
LineTerm module. At this point all connections for the channel have been verified.
10