Abstract
In this paper we argue that specifications for training equipment must be based on statements of mission-system functionality. To develop a good description of functionality is a difficult technical challenge, and the methodology of Work Domain Analysis has been developed for that purpose. However, a Work Domain Analysis does not fully specify the devices that are needed for training. Other forms of analysis and inference are needed to resolve issues of crititicality, instructional functions, implementation of functions in a training device, and fidelity of training device features. In this paper we explain the means of moving from functional requirements as developed by a Work Domain Analysis to specifications for training equipment.
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