ADTRAN 1202060L2-1, Руководство пользователя

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Chapter 2. Installation
2-2 TSU LT User Manual 61202060L1-1
Power Connection
Each TSU LT unit is provided with a captive eight-foot power
cord, terminated by a three-prong plug which connects to a
grounded power receptacle.
Power Up Testing and Initialization
When shipped from the factory, the TSU LT is set to factory
default conditions. At the first application of power, the unit
automatically executes self-tests followed by an initialization
sequence which sets up the unit.
Self-Test
Power to the TSU LT must be from a grounded 220-230
VAC, 60 Hz power source.
When Then
A power-up or com-
manded self-test oc-
curs The LCD displays
ADTRAN TSU INITIALIZ-
ING
and the LEDs illuminate sequentially.
The self-test is com-
pleted with no failures
detected The LCD momentarily displays ALL TESTS
PASSED .
a failure is detected It is displayed in the LCD window.
The automatic self-test consists of the fol-
lowing tests:
Board level tests
Random access memory (RAM) tests; eras-
able 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 lock loop verify.