Operation and Maintenance Instructions: Tower Alarm Signaling System

摘要

The Alarm Signaling System is a set of seven unique circuit cards with a chassis unit which provides power supplies and card mounting facilities. The system is designed to provide a multi-node communications network. At each node a chassis along with selected circuit cards can be configured to perform various functions, from simple data relaying to complex data modification. The one circuit card required at every node is the Special Purpose Logic Component (SPLC) card. This card is a microprocessor which is programmed to perform the data manipulations of the node. The theory of operation and microprocessor program are described in detail. (ERA citation 04:001278)