Instruction manual
14
The iMcV-T1/E1/J1 Repeater can be configured to use the following loopback test
modes:
Local Fiber Loopback Mode
This setting tests the path from the CO copper
port to the Local iMcV-T1/E1/J1 Repeater
module fiber port and back.
Remote Fiber Loopback Mode
This setting tests the path from the CO copper
port to the Remote iMcV-T1/E1/J1 Repeater
module fiber port and loops it back.
Remote Copper Loopback Mode
This setting tests the path from the CO copper
port to the Remote iMcV-T1/E1/J1 Repeater
module copper port and loops it back.
The following illustrations show a typical progression of digital loopback tests; this
series allows the user to individually test each segment of the conversion. To test the
copper segment at the remote location requires the PRBS test described in the next
section.
Local Fiber Loopback Mode
To set the loopback testing mode to Local Fiber Loopback Mode, perform the
following:
1.
Set the Local iMcV-T1/E1/J1 Repeater module to
Remote
Loopback
(DIP Switch S3-3=Off and S3-4=Off)
2.
Set the Remote iMcV-T1/E1/J1 Repeater module Loopback to
None
(DIP Switch S3-3=On and S3-4=On).
This configuration allows the user to test the path from the CO copper port to the
Local iMcV-T1/E1/J1 Repeater module fiber port and loop it back. The transmitted
data is sent unhindered and the received data is ignored.