Chapter 7. Test Menu
61200420L1-1 ESU 120e User Manual 7-7
The self-test consists of the following tests:
Port TestsThe Port Tests menu is use d to activate tes ting of specific d ata
ports. It controls t he activation of loopbacks and th e initiation of
data test patterns. Test results are displayed in the LCD window.
The execution of Port Tests will disrupt norma l data flow in the
port being tested.
Test Name What it does . . .
Board level tests Each of the ESU 120e boards contains an on-
board processor which executes the following
series of tests checking the circuitry on the board:
• RAM tests; EPROM checksum
• TS0 map tests
• On board data path (sending a known test pat-
tern through an on-board loop)
Unit level tests • Front panel LED verificat ion
• Phase-Lock Loop verify
• Board-to-board interface test
A test pattern is sent from the controller through
a loopback 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.
The execution of self-test will disrupt normal
data flow and prevent remote communication
until the self-test is completed.