Chapter 7. Test Menu

A test pattern is sent from the controller through a loop- back on all other boards and is checked on the controller. This verifies the data path, clocks, and control signals.

If a failure is detected, note the failure number prior to contacting ADTRAN Technical Support (see page xi of this manual).

The execution of the self-test will disrupt normal data flow and prevent remote communication until the self-test is completed.

Port Tests

The PORT TESTS menu is used to activate testing of specif- ic data ports. It controls the activation of loopbacks and the initiation of data test patterns. Test results are dis- played on the terminal screen.

The execution of Port Tests will disrupt normal data flow in the port being tested.

Nx/DBU (0.1) Menu Items

Nx/DBU (0.1) is the base Nx interface. It offers the follow- ing test functions:

DTE LOOPBACK

This initiates a loopback. The following options are avail- able:

REMOTE

The remote loopback causes a V.54 code to be sent to the far end.

The Nx at the far end activates a PORT/LOCAL loopback upon detection of the V.54 code.

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TDU 120e User Manual

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ADTRAN TDU 120e user manual Port Tests, DTE Loopback