ADTRAN T1-FT1 user manual R 5 1 1 Error S 5 1 1 Error S = 5, 2Run Selftest, Submenu of 4Test

Chapter 3. Operation

4)CLR 511 ERRORS - Accomplishes two functions. First, it clears out the 511 error total when ENTER is pressed. Second, it displays a total of the 511 errors. If 511 errors are being received, the display is updated accordingly.

C L R 5 1 1 E R R O R S 5 1 1 E R R O R S = 5 6

This menu function is very useful for testing end-to-end integrity of the network. First loopup the far end TSU. Then send a 511 pattern from the local TSU. The CLR 511 ERRORS screen can then be used to determine if the link is functioning properly by verifying that no errors are being counted.

2)Run Selftest, Submenu of 4)Test

This menu selection is used to execute an internal self test. This is the same self test that is performed automatically at power up. The results of the self tests are displayed in the LCD. Upon invoking the command the LCD displays INITIALIZING and test failures are displayed in the LCD window. The self test procedure consists of the following tests.

•Ram tests; EPROM checksum

•On board data path. Sending a known test pattern through an on-board loop

•Front Panel LED verification

•Phase Lock Loop verify

If a failure is detected, note the failure number prior to contacting ADTRAN technical support.

Executing a self test will disrupt normal data flow and prevent re- mote communication until the self test is completed (5 seconds).

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