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.
•
RAM tests; EPROM checksum
•
On board data path. Sending a known test pattern
through an on board loop.
2.
Unit level tests.
•
Front Panel LED verification
•
Phase Lock Loop verify
Содержание 1200060L1
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Страница 14: ...List of Figures xiv TSU User Manual 61200060L1 1...
Страница 16: ...List of Tables xvi TSU User Manual 61200060L1 1...
Страница 66: ...Chapter 3 Operation 3 30 TSU User Manual 61200060L1 1...
Страница 70: ...Chapter 4 Testing Example 4 4 TSU User Manual 61200060L1 1...
Страница 72: ...Appendix A TSU Complete Menu A 2 TSU User Manual 61200060L1 1...
Страница 74: ...Appendix B DTE Data Rate Chart B 2 TSU User Manual 61200060L1 1...
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