TSU LT User Manual
Chapter 2 Inspection and Installation
61203060L1-1A
© 2003 ADTRAN, Inc.
25
In addition to the specified self-tests, background tests are run on various parts of the internal electronics.
These run during normal operation to confirm continued correct functioning. The background tests include
the following:
•
Monitoring the phase-locked loop for lock.
•
Standard background network performance monitoring.
The self-test works as follows:
The automatic self-test consists of the following tests:
•
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 lock loop verification
If...
Then...
a power-up (or commanded) self-test occurs
the LCD displays ADTRAN TSU INITIALIZING and the LEDs
illuminate sequentially.
the self-test completes with no failures detected
the LCD momentarily displays ALL TESTS PASSED.
a failure is detected
it is displayed in the LCD window.
Summary of Contents for TSU LT
Page 1: ...TSU LT USER MANUAL Part Number 1203060L1 61203060L1 1A April 2003...
Page 16: ...List of Figures TSU LT User Manual 16 2003 ADTRAN Inc 61203060L1 1A...
Page 18: ...List of Tables TSU LT User Manual 18 2003 ADTRAN Inc 61203060L1 1A...
Page 26: ...Chapter 2 Inspection and Installation TSU LT User Manual 26 2003 ADTRAN Inc 61203060L1 1A...
Page 34: ...Chapter 3 Operation TSU LT User Manual 34 2003 ADTRAN Inc 61203060L1 1A...
Page 38: ...Chapter 4 Status Menu TSU LT User Manual 38 2003 ADTRAN Inc 61203060L1 1A...
Page 58: ...Appendix B DTE Data Rate Chart TSU LT User Manual 58 2003 ADTRAN Inc 61203060L1 1A...
Page 62: ...Appendix C Pinouts TSU LT User Manual 62 2003 ADTRAN Inc 61203060L1 1A...