6. Analyze needs and define technical system requirements

Unfold and iterate the following activities.

Analyze operational use scenarios, operational modes and all other types of need to define the system's functional requirements.

Analyze efficiency, performance and other needs to define performance requirements.

Quantify the functional elements and expected behaviors such as input, output, response time, data volume, etc., deduced from the above functional requirements in order to define performance requirements.

Analyze interface requirements and all other types of need to define functional interface requirements and physical interface requirements.

Analyze operational conditions and all other types of need to define use or operation requirements such as :

• operational modes,...