Systems Engineering (SE)

The Linkage Between States & Modes and Performance Requirements

by Kevin J. Dutcher


While the identification of States and Modes is called out in some specification templates, it is missing from others. This paper contends that an item cannot be fully specified without identifying States and Modes. Furthermore, to easily document the States and Modes, the performance requirements are best defined within the following schema construct: • Functional Statement (verb – noun) o Performance Parameter 1 -Condition 1 -Condition 2 o Performance Parameter 2 -Condition 1 -Condition 2