IMC Networks iMcV-T1/E1/J1-LineTerm TP/Fiber-CWDM-SM1310-SC Manual de Instruções descarregar pdf (Página 13)

Loopback Testing

The iMcV-T1/E1/J1-LineTerm includes three Loopback test modes: Copper

Loopback, Fiber Loopback and Internal Fiber Loopback.

The following illustrations show the path that a signal takes in each of the Loopback

test modes.

Each Loopback performs the following:

•

Copies the incoming signal back out to the origin while continuing to transmit this

signal downstream.

•

Blocks upstream data from transmitting on the looped data line.

Loopback testing is useful for troubleshooting problems with network connections

should they occur. Looping received data back onto the transmit path helps

determine whether a connection is still valid. Copper Loopback tests isolate

problems on the copper run between an iMcV-T1/E1/J1-LineTerm module and the

connected device, while Fiber Loopback tests can isolate problems on the fiber

connected to the module.

The following illustrations show a typical progression of Loopback tests (i.e., starting

by checking the copper segment at the local side, then the fiber segment at the

REMOTE side, etc).

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20

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IMC Networks iMcV-T1/E1/J1-LineTerm TP/Fiber-CWDM-SM1310-SC Manual de Instruções Página 13