Analysis Techniques For Man-Machine Systems Design

NATO UNCLASSIFIED-21 -AC/243(Panel-9)TRL7Volume 22.2 SEQUENCE AND TIMING (SAT) DIAGRAMSWhat the technique doesSequence and Timing Diagrams were developed for systems engineering purposes. They show the sequence ofactivation of the sub-systems as necessary system functions are performed.inputs to the techniqueTo generate the diagrams, the analyst requires informationon the sub-systems (see Part 2 of this volume forexamples of system hierarchies), and on the sequence offunctions to be performed by the sub-systems.Outputs of the techniqueThc diagrams show the flow of "activations" throughsub-systems. as system functions am.performcd.Operator 1 functionf1.0 L iOperator 2 function functon2.0 6.0Sub-system 1function4.0Sub-system 2 funct function3.0 7.0Sequence of functions -0Figure 2.3:Sequence and timing diagramNATO UNCLASSIFIED- 1i