Another example of a custom data acquisition system would be the Control Element Drive mechanism (CEDM) Diagnostic equipment designed by AMS for Combustion Engineering plants. AMS developed the CEDM diagnostic system in response to aging and obsolescence issues with the current generation of CEDMs, system controls, cables, and connectors. These types of issues have led to failures which have caused reduced plant loads, reactor shutdowns, and manual or automatic reactor trips with the potential to result in millions of dollars of lost revenue. In the past, very little diagnostic data was available in the event of a failure which left the plant with very little direction on where to begin troubleshooting activities. AMS worked with the plants to develop a solution for this issue in the CEDM Diagnostic equipment. The system is designed to connect to existing test point signals during all modes of plant operation and provide automated monitoring, fault detection, and diagnostics to classify system failures, trend important parameters, log abnormal events, and localize faults.