Specifications

MI I.-STD-1472E
5.2.1.3.4.
Redundancy. Redundant information shall not be displayed to a single operator
unless it is requmedto achieve specified reliability.
5.2.1 .3,5 Combininjzo
matorhtmintainer information. Operator and maintainer information
shall not be combined in a single display unless the information conten~ forma~ and timeliness
qpofi tie needs of both users.
5.2.1 .3.6 Display failure clarity.
Failure of a display or other parts of the display subsystem
shall be immediately apparent to the operator.
5.2.1 .3.7 Dis~lav subwstem failure. Failure of the display subsystem shall not cause a fhilure
in the equipment associated with the display.
5.2.1 .3.8 Unrelated markirws. Trademarks and company names or other similar markings not
related to the panel function shall not be displayed on the panel face.
5.2.1 .3.9 Duzition. Signals and infiion shall be displayed long enough for reliable
detection under expected operator workload and operational environment.
5.2.1.3.10 Timeliness. Displays requiring refished information (e.g., cathode ray tube
displays, head-up displays) shall be updated in a synchronous manner, where possible, and be
refished at a rate required by personnel in the normal operating or servicing mode.
5.2.1.3.11 Advisow and alerting. Devices displaying simultaneous and integrated information
(e.g., multifunction displays, cathode ray tube displays, head-up displays, collimated displays) shall
alert or cue operating personnel to information that becomes critical within the display.
5.2.1.3.12 NBCcon@ninati on. As applicable, display characteristics (e.g., legibility) shall be
compatible with viewing while wearing an NBC protective mask. Disp!ays or indicators that show the
presence of NBC agents shall also show when such agent concentrations decrease to safe levels.
5.2.1.3.13 Numeric di~ital disda~s. Numeric digital displays should be used when precision
of displayed information is importan$ but shall not be used as the oniy display of information when
the pattern of variation is important for accurate perception or when rapid or slow digital display rates
inhibit accurate perception.
5.2.1.4 Location and arrangement.
5.2.1 .4.1 Lwdi~ Displays shal! be located and designed so that they may be read to the
required degree of accuracy by personnel in their normal opemting or servicing positions without need
to assume uncomfortable, awkward, or unsafe postures.
5.2.1 .4.2 Access Visual displays Should be visually accessible without resorting to use of
ladders, flashlights, or other special equipment in order to read the display.
5.2.1 .4.3 @en@tion. Display faces shall be perpendicular to the operator’s normal line of sight
whenever feasible and sMI! be not less ‘l!tan45” fiwrnthe norm! line of sight (see Figure 1).
Parallax
shall be minimized.
5.2. 1.4.4 Reflection. Displays shall be constructed. arranged, and mounted toprevent
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cover. Reflection of instruments and consoles in windshields and other enclosures shall be avoided.
!i’lw~exiar~, ;tihni+ uw (suc!~as W of shields and fihcrs) shall be
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