ADTRAN TSU 600 user manual Power UP Testing and Initialization, Self Test

Models: TSU 600

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Chapter 2. Installation

POWER UP TESTING AND INITIALIZATION

When shipped from the factory, the TSU 600 is set to factory default conditions. At the first application of power, the unit automatically executes a memory self test. A full self test can be run from the front panel, and a pass code and unit ID may be set using the UTIL menu.

Self Test

Upon a power-up, the LCD displays Memory Test Now Testing and the Test LEDs are illuminated. When the self test is completed with no failures detected, the OK LED lights up and the LCD momen- tarily displays All Tests Passed. If a failure is de- tected, a list of failures is displayed in the LCD win- dow. The full self test procedure (invoked from the front panel or T-Watch) consists of the following steps:

1.Board level tests. Each of the TSU 600 boards contains an on board processor which executes a series of tests checking the circuitry on the board.

a.RAM tests; EPROM checksum.

b.DS0 map tests.

c.On board data path. Sending a known test pattern through an on board loop.

2.Unit level tests.

a.Front panel LED verification.

b.Phase lock loop verify.

c.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.

61200.076L2-1

TSU 600 User Manual

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Page 45
Image 45
ADTRAN TSU 600 user manual Power UP Testing and Initialization, Self Test