MIL-STD-46855A
intervention shall be considered part of the human-system interface. Multifunction controls and displays that vary in function depending on system software and associated user interfaces shall also be considered part of the human-system interface. The contractor shall use a style guide in the development of software and associated user interfaces to define the general principles and specific rules that guide the design and consistency of individual components. To the degree practical, the use of models, simulations, and prototypes shall be used to support software and associated user interface development and user interface designs.
5.2.8 Review manuals and technical documentation. Human engineering shall be applied to the development of operational, maintenance, and training manuals and documentation (electronic or hard-copy) to ensure thoroughness, technical accuracy, suitable format of information presentation, appropriate reading level, technical sophistication required, clarity, and quality of illustrations. Human engineering input shall be provided for the selection of the level of
interaction to be supported in interactive electronic technical manuals (IETMs).
5.3 Human engineering in test and evaluation. The contractor shall establish and conduct a test and evaluation program to:
a. Verify that the system can be operated, maintained, and supported by the designated staffing with the expected personnel attributes in the intended operational environments;
b. Secure quantitative measures of system performance that are a function of the human interaction with equipment or software and associated user interfaces;
c. Confirm compliance with system performance requirements where personnel performance is a system performance determinant;
d. Demonstrate conformance of system, equipment, and facility design to human engineering design criteria;
e. Determine whether undesirable design or procedural features have been introduced; and f. Verify and validate proposed training, training devices, and job aids provide adequate
training and access to reference information.
Maximum use shall be made of the data collected from experiments, demonstrations, and studies (see 5.2.2). Both qualitative and quantitative data can be used to support human engineering efforts in the test and evaluation process. The fact that individual tests and evaluations may occur at various stages in system, subsystem, equipment, or facility development shall not preclude final human engineering verification of the complete system. Operator and maintainer normal, emergency, and degraded mode tasks shall be performed during the final system test.
5.3.1 Conduct test and evaluation planning. Human engineering testing using operational hardware, software and associated user interfaces shall be incorporated into the system test and evaluation program and shall be integrated into engineering design and development tests, contractor demonstrations, flight tests, acceptance tests and other development tests. Compliance with human engineering requirements shall be tested as early as possible. Human engineering findings from design reviews, mockup inspections, demonstrations and other early engineering tests shall be used in planning and conducting later tests. Human engineering test planning shall
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