Starting/Stopping a BERT

 

Once all configurations have been made, the user can start the BERT test (press the Start icon on the top right section of the screen). The following are three scenarios of how to prepare and start the unit for BERT testing.

 

If testing on the fiber ports, make sure the LASER is turned on before starting the test.

 

  • End-to-End Testing
    • Connect the test set to another unit that supports BERT testing.
    • After configuring test settings on both units, start the tests.
  • Far-End Unit in Manual Loopback Mode
    • If the far-end unit (another MX) is already in a manual loopback mode, do not send a loop up command since it is not necessary.
    • Once the correct control settings are configured, the user can start the test.

 

The selected tests will run automatically. When all the tests are complete the test will stop automatically. If the BERT test suite needs to be stopped before they are done, then simply press the Stop button, located in the actions drop-down menu. The status of each selected test can be seen in the Results tab.

 

  • Far-End Unit Controlled with Loop Up/Down Commands
    • If the far-end unit is not manually looped back, then it must first receive a loop up command from the control unit before the BERT test suite can be started.
    • To loop up the far-end unit with the manual mode loop up/down commands, configure the control settings mode to manual.
    • Enter the MAC and/or IP address of the far-end unit.
    • Send the loop up command by pressing Loop Up.

 

Once the far-end unit has been looped back, start the test by pressing the Start button. When the all of the selected test are completed, the BERT test suite will stop automatically. Once all tests have been completed and there is no need to test again, go back to the Control tab, and press the Loop Down button. This will send a loop down command to the far-end unit to remove the loopback that is in place.