ADTRAN T1-FT1 Uživatelský manuál stáhnout pdf (Strana 36)

Chapter 2. Installation

2-6 TSU User Manual 61200060L1-1

POWER UP TESTING AND INITIALIZATION

When shipped from the factory, the TSU is uninitialized and

set to factory default conditions. At the first application of

power, the unit will automatically execute 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 INITIALIZING

and the LEDs illuminate

sequentially. When the self test is completed with no failures

detected, the LCD will momentarily display

ALL TESTS

PASSED

. If a failure is detected it is displayed in the LCD

window. The automatic self test procedure consists of the

following tests.

1. Board level tests.

•RAMtests;EPROMchecksum

• On board data path. Sending a known test pattern

throughanonboardloop.

2. Unit level tests.

• Front Panel LED verification

• Phase Lock Loop verify

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ADTRAN T1-FT1 Uživatelský manuál Strana 36