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Chapter 2. Installation
2-4
TSU ACE User Manual
61200295L1-20
POWER UP TESTING AND INITIALIZATION
When shipped from the factory, the TSU ACE
is set to factory default
conditions. At the first application of power, the unit automatically ex-
ecutes self-tests followed by an initialization sequence which sets up
the unit.
Self-test
Upon a power-up or commanded self-tests, the LCD displays
ADTRAN TSU ACE INITIALIZING
and the LEDs illuminate sequentially.
When the self-test is completed with no failures detected, the LCD mo-
mentarily displays
ALL TESTS PASSED
. If a failure is detected, it is dis-
played in the LCD window. The automatic self-test procedure consists
of the following steps:
Board level tests
•
Random access memory (RAM) tests; erasable programmable
read only memory (EPROM) checksum.
•
On-board data path. Sending a known test pattern through an on-
board loop.
Unit level tests
•
Front panel LED verification.
•
Phase locked loop verify.
Содержание TSU ACE
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Страница 28: ...Chapter 1 Introduction 1 12 TSU ACE User Manual 61200295L1 20...
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