DEB I Fault Alarm System (FAS) Test

摘要

System Testing of the Digital European Backbone (DEB) I Fault Alarm System (FAS) was accomplished in August-September, 1979. The test verified the operation of three FAS master stations and twelve FAS remote stations (the thirteenth remote station, Vicenza, could not be verified because its installation was incomplete). Numerous probems were found during the course of the test activity. Among these were defective printed circuit boards, incorrect strapping, and wiring errors in the FAS equipment and at the IDF. Instances of spontaneous control switching actions were observed. Their cause was found and corrected. Problems that were not readily correctable were identified as open items for future action. All problems found (those corrected and those still open) are identified. (Author)