ADTRAN ATLAS 800PLUS User Manual
Page 49
Chapter 4. Front Panel Operation and Menu Structure
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ATLAS
_
800
PLUS
User Manual
4-7
Software Rev
This option displays the current software revision level loaded into the base unit
controller. This information is required when requesting assistance from
ADTRAN Technical Support or when updates are needed. Press
Cancel
to exit
this option.
Selftest
Selftest executes a system self-test, and the LCD displays the
Pass
or
Fail
when
the test is complete.
The Sefltest option disrupts data flow.
Run Selftest
This command initiates a self-test. When you select this option, the prompt
Selftest, Are You Sure Y/N?
displays. To initiate the self-test, select
Y
and
press
Enter
. Select
N
and press
Enter
to cancel the self-test.
If you select
Y
and proceed with the self-test, the LCD displays the message
Selftest in progress....
When the self-test is complete with no failures
detected, the
OK
LED illuminates and the LCD momentarily displays
Self-Test Passed.
If failures are detected, a list of failures displays in the
LCD window.
The full self-test procedure consists of the following steps:
1.
Board-level tests.
The Controller contains an on-board processor which executes a series of
tests checking the circuitry on the board.
2.
RAM tests;
EPROM checksum.
3.
TDM map tests.
4.
On-board data path.
Sending a known test pattern through an on- board loop.
5.
Board-to-board interface test.
A test pattern is sent from the controller through a loopback on all other
boards and checked on the controller. This verifies the data path, clocks,
and control signals.
During a self-test, ATLAS
_
800
PLUS
checks data integrity and verifies proces-
sor control to each port. Each port is looped back and a data pattern is sent
and tested.