Conduct Top Down Function Analysis

System functions constitute the major activities to be performed by the system, at several layers of iteration, short of the level of specificity that requires designation of the means of accomplishing the function. The system HSI function analysis will identify functions to be performed and provide a functional flow block diagram depicting the sequence of functions for the system. The functions will be decomposed to successively greater levels of detail in an iterative manner based on requirements associated with each function.