Department of Defense Design Criteria Standard

Department of Defense Design Criteria Standard PowerPoint PPT Presentation


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2. Scope of the Military Standard. . To establish general human engineering criteria for design and development of military systems, equipment and facilities.. 3. Achieve required performance by operator, control and maintenance personnel.Minimize skill and personnel requirements and training time.Achieve required reliability of personnel-equipment combinations.Foster design standardization within and among systems..

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Department of Defense Design Criteria Standard

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1. 1 Department of Defense Design Criteria Standard Human Engineering MIL-STD-1472F

2. 2 Scope of the Military Standard

3. 3 Achieve required performance by operator, control and maintenance personnel. Minimize skill and personnel requirements and training time. Achieve required reliability of personnel-equipment combinations. Foster design standardization within and among systems.

4. 4 Human engineering development specialists will still be required to interpret and implement the criteria and they will also need to provide solutions to problems not covered in the Standard.

5. 5 Application The design of all systems, subsystems, equipment and facilities Except where provisions relating to aircraft design conflict with crew system design requirements or guidelines of JSSG-2010. The standard is NOT meant to limit the selection of hardware, materials or processes. Standard applies to both men and women.

6. 6 Force Limits If an item is already in use and there is a discrepancy between the force limits of the standard and the physical qualifications requirements of the occupational specialty, the latter will have final say. “The least stringent physical qualification requirement of all specialties…will be used as a maximum design force limit.”

7. 7 Manufacturing Tolerances “When manufacturing tolerances are not perceptible o the user, this standard will not be construed as preventing the use of components whose dimensions are within a normal manufacturing upper or lower limit tolerance of the dimensions specified herein.”

8. 8 Also considered part of the MIL-STD-1472F: Specifications -Markings for Aircrew Station Displays, Design and Configuration of (MIL-M-18012). -Colors, aeronautical Lights and Lighting Equipment, general Specification for (MIL-C-25050). Standards -Colors (FED-STD-595). -Noise Limits (MIL-STD-1474) Handbooks -General Guidelines for Electronic Equipment (MIL-HDBK-454). -Anthropometry of US Military Personnel (DOD-HDBK-743). -Human Factors Engineering Design for Army Material (MIL-HDBK-759). -Color and Marking of Army Material (MIL-HDBK-1473 -Definitions of Human Factors Terms (MIL-HDBK-1908).

9. 9 More government documents that considered part of the MIL-STD-1472F: -Occupational Safety and Health Schedule (29 CFR 1910) -DoD Joint Technical Architecture (JTA 2.0)

10. 10 Definitions Unless otherwise specified, terms are defined in accordance with MIL-HDBK-1908.

11. 11 General Requirements Objectives Standardization Function allocation Human Engineering Design

12. 12 General Requirements, continued: Design for NBC Survivability. Design for Electromagnetic Pulse (EMP) Hardening. Automation Functional Use of Color Design of Aircrew Systems

13. 13 Detailed Requirements 5.1: Control/Display integration 5.2: Visual Displays 5.3: Audio Displays 5.4: Controls 5.5: Labeling 5.6: Physical Accommodation 5.7: Workspace design 5.8: Environment

14. 14 Detailed Requirements, continued: 5.9: Design for Maintainer 5.10: Design of Equipment for Remote Handling 5.11: Small Systems and Equipment 5.12: Operational and Maintenance Ground/Shipboard vehicles. 5.13: Hazards and Safety 5.14: User Computer Interface 5.15: Visual Display Terminals

15. 15 5.1: Control/Display Integration General Criteria Relationship Design Complexity and precision Feedback Illumination Position relationships Functional Grouping Functional Group Relationships Sequence Access Functional Group marking Consistency Display Commonality

16. 16 Position relationships (continued):

17. 17 Movement Relationships

18. 18 • Signal Precedence: Each of the following signals shall take precedence over those below them:

19. 19 5.2: Visual Displays: General Warning Caution Use Characteristics Signal Integration Priority Coding Text Height Co-Location Additional Warnings

20. 20 General continued: Display illumination and light distribution Display Illumination

21. 21 General continued: Location and Arrangement Location Access Orientation Reflection Vibration Grouping Function and Sequence Frequency of Use Importance Consistency Maximum Viewing Distance Minimum Viewing Distance Maintenance displays Aircrew Station Signals

22. 22 General continued: Coding Objectives Techniques Standardization Aircrew Display Symbology Flash Coding Color Coding Electronic Displays Viewing Distance Luminance Considerations Geometric Stability Character/Signal Characteristics Mechanical Display Representations Use with Individual Protective Equipment

23. 23 Transilluminated Displays General Use Equipment Response Information Positive Feedback Grouping Location Location, Critical Functions Luminance Luminance Control False Indication or Obscuration Contrast within the Indicator Transilluminated Displays Color Coding

24. 24 Transilluminated Displays Legend Lights Use Color Coding Positive vs. Negative Legend Lettering Visibility and Legibility Multifunction Legends Simple Indicator Lights Use Spacing Coding Transilluminate Panel Assemblies Use Large, Single Pictorial Graphic Panels Relamping Brightness

25. 25 Scale Indicators General Types of Scale Indicators Use Type of Information Linear Scales Scale Markings Numerals Pointer Luminance Contrast Calibration Information Coding

26. 26 Scale Indicators (continued): Moving-Pointer, Fixed Scale Displays Numerical Progression Orientation Circular Scales Curved (arc), Horizontal Straight, and Vertical Straight Fixed-Pointer, Moving Scale Displays Numerical Progression Orientation Alignment of Pointer or Fixed Reference Line Setting Tracking Moving Tape Displays Composite Scalar/Pictorial Displays

27. 27 Cathode Ray Tube (CRT) Displays: Use Luminance and Contrast Luminance Contrast Luminance range of Adjacent Surfaces Ambient Luminance Image polarity Geometric Distortion Chromatic Misregistration Preventing Flicker Installation

28. 28 Large Screen Displays: General Use Avoidance Viewing Distance Physical Interruption of View Control of Displayed Information Content of Displayed Information Direct View Character Height Character Width Luminance Contrast Polarity Background for Colored Objects Dot Matrix Size

29. 29 Large Screen Displays (continued): Optical Projection Use Seating Area Image Luminance and Light Distribution Legibility of Projected Data

30. 30 Other Displays: General Counters Printers Plotters and Recorders Flags Dot Matrix /Segmented Displays Electroluminescent Displays Liquid Crystal Displays (LCD) Representational Displays Stereoscopic Displays Head Up Displays (HUDs) Helmet Mounted Displays

31. 31 General Use Signal Type Signal Meaning Apparent Urgency Use with Several Visual Displays Speech supplements Silent Operators at night Manual Overrides Reliability Aircrew Stations

32. 32 Audio Warnings Warning Signals Nature of Signals Caution Signals Relation to Visual Displays Characteristics of Audio Warning Signals Frequency Range Electric Power Frequency Avoidance Intensity Compatibility with Acoustical Environment Compatibility with Clothing and Equipment Discomfort

33. 33 Signal Characteristics in Relation to Operational Conditions and Objectives Audibility Alerting capability Discriminability Compatibility Masking Verbal Warning Signals Nature of Signals Intensity Vocal Criteria Speech processing Message Content Critical Warnings and Priorities

34. 34 Controls for Audio Warning Devices Automatic or Manual Shut-off Automatic Reset Redundant Visual Warning Volume Control Duration Duration Limitations Speech Transmission Equipment Frequency Dynamic Range High-Pass Filtering Pre-Emphasis Peak-Clipping of Speech Signals Noise Shields Automatic Loudness Control Binaural Asynchronous Delay Speaker/Side Tone

35. 35 Speech Reception Equipment Frequency Range Loudspeakers for Multi-Channel Monitoring Use of De-emphasis Headsets Earphone/Speaker-to-Microphone Feedback Isolation Public Address Systems Operator Comfort and Convenience Comfort Hands-Free Operation Accessibility of Handsets Operating Controls for Communication Equipment Volume Controls Squelch Control Foot-Operated Controls

36. 36 Telephone Systems Conventional Telephone Systems Sound-Powered Telephones 3D Audio Displays Use Presentation Format Angular Separation Binaural vs. Monaural Speech Displays Use Output Rate Digitized Speech Message Priority Control Instructional Display Structure Message Cancel Capability Repeat Capability

37. 37 Speech Intelligibility General Criteria

38. 38 5.4: Controls General Criteria Selection Direction of Movement Arrangement and Grouping Coding Labeling of Controls Compatibility with Handwear Blind Operation Prevention of Accidental Actuation Hazardous Operations

39. 39 5.4: Controls Rotary Controls Discrete Adjustment Rotary Controls Rotary Selector Switches Key Operated Switches Discrete Thumbwheel Controls Continuous Adjustment Rotary Controls Knobs Ganged Control Knobs Continuous Adjustment Thumbwheel Controls Cranks Handwheels (two-hand operated)

40. 40 5.4: Controls Linear Controls Discrete Linear Controls Push Buttons (finger or hand operated) Foot-Operated Switches Keyboards Toggle Switch Controls Legend Switches Rocker Switches Slide Switch Controls Discrete Push-Pull Controls Printed Circuit (PC) Controls

41. 41 5.4: Controls Linear Controls (continued): Continuous Adjustment Linear Controls Levers Displacement (Isotonic) Joysticks Isometric Joystick (two axis controllers) Ball Control Grid-and Stylus-Devices Mouse (free-moving XY controller) Pucks Pedals

42. 42 5.4: Controls High Force Controls Use Arm, Hand, and Thumb-Finger Controls Foot Controls Miniature Controls Use Dimensions, Resistance, Displacement and Separation Other Requirements

43. 43 5.4: Controls Touch-Screen Controls for Displays Use Luminance Transmission Positive Indication System Display Response Time (Latency) Impact on Visual Display Critical Tasks Repeat Delay Target Shape and Color

44. 44 5.4: Controls Speech Recognition Use General Input Vocabulary Interword Delays Prompting Correction Capability Alternative Input Device

45. 45 5.4: Controls Eye- and Head-Based Controls Use Vibration Precision Dwell Times Response Times J-Handles

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