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MAP-01-011 HFI Technical Guide - Human Factors Integration ...

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Chapter 15 – Operability And User-Equipment InteractionAs part of the process of defining the user-equipment interfaces for equipment,decisions regarding the use of automation and the allocation of functionsdetermine the user tasks to be supported by the user-equipment interfaces. Thedesign of the user-equipment interface proceeds from an early outline of the maindisplays and dialogues, through a logical description of all the user-equipmenttransactions to be included.A <strong>Human</strong> <strong>Factors</strong> Style <strong>Guide</strong> is selected for use in standardising the design ofdisplays, controls and the dialogue. Operability criteria represent the userperformance requirements to be supported by the user interface. Userequipmentinterface prototyping is used to ensure that the final design meets allessential operability criteria. The user-equipment interface design is developedwith user support facilities and user procedures. During the Manufacture and InservicePhases assessments are conducted on each aspect of the userequipmentinterface and supporting materials to ensure they meet the userrequirements.The process of defining operability and user-equipment interaction involvesliaison between the <strong>HFI</strong> Focus and various stakeholders in conducting the <strong>HFI</strong>activities. The <strong>HFI</strong> activities are presented in Table 15-1. The ticks represent theprocurement Phases at which the activities are likely to be conducted.<strong>HFI</strong> ProcessC A D M I D <strong>HFI</strong> ActivityOutline Use of AutomationOutline User TasksOutline User-Equipment Interface Facilities Specify Allocation of Functions Identify Critical User Performance Define User Tasks Specify Logical User-Equipment Interface Select <strong>Human</strong> <strong>Factors</strong> Style <strong>Guide</strong> Specify Operability Criteria Identify User-Equipment Interface Prototyping Specify User Tasks Apply <strong>Human</strong> <strong>Factors</strong> Style <strong>Guide</strong> Specify User-Equipment Interface Conduct User-Equipment Interface Prototyping Specify User Support Facilities Specify Operating ProceduresNov 2006 Page 15-11 Issue 4

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