MODELING AND DIAGNOSABILITY OF FAULTY UNITS IN DIGITAL ,COMPUTER NETWORKS | ||||
| International Conference on Aerospace Sciences and Aviation Technology | ||||
| Article 42, Volume 4, ASAT CONFLENCE 14-16 May 1991 , CAIRO, May 1991, Page 487-493 PDF (1.35 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/asat.1991.25831 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| M. E. ELBABLY | ||||
| Dr. Dept. of Telecommunications & Electronics, Faculty of Eng. & TechnOlogy - Helwan University Helwan - Cairo - Egypt. | ||||
| Abstract | ||||
| With a field replaceable-unit (FRU) (which contains more electronics chips) it. is becoming uneconomical to throw a faulty FRU (module or card or hoard in digital electronic networks) away without trying to repair it (or at least salvage parts). Testability must therefore also include diagnosability, i.e., the capability for locating faults at least down to smallest-repair-replaceqble-unit.(SRRU) level, in distinction to the FRU. Without diagnosis, repair will be impossible. Many researchers have contributed in diagnostic modeling of digital systems, also the chracterisetion of different diagnostic methods have been established. Most of these works have been concentrated on the identification of faulty units only in digital systems. In this research, the necessary and sufficient conditions which are required to identify the faulty parts using different diagnostic models, whether these faults in the system units (main units, which are work in normal mode) or in the comparator units (work in test mode) will be presented. Also, an algorithm for distributed diagnosis in computer networks will be proposed. | ||||
|
Statistics Article View: 98 PDF Download: 183 |
||||
