Specifications

MIL-STD-1472E
5.2.2.4 Transilh.uninated panel assemblies.
5.2.2.4.1 ~. Transilluminamd (integrally lighted) panel assemblies may be used to provide:
a. illuminated labels for a control panel,
b. a light source for illuminating tmnsilluminateci control knobs,
c. illuminated association markings on a control panel (e.g., comczting lines
between controls,
outlines around a functionally-related gToupof controls or displays), or
d. a pictorialized representation of a system process, communication network or other
informatioticomponent organization.
5.2.2.4.2 Large, sinale Pictorial mzmhic pane
1s. Large, singb pictorial graphic panels, used to
display system processing, communications networks, or similar applications, shall comply with
requirements for visibility, legibility, color, and illumination as specified herein.
5.2.2.4.3 Re-laxrming. When replaceable incandescent lamps are used for integral lighting, they
shall be readily accessible without disconnecting the panel(s). A sufficient numbe~of lamps shall be
provided so that failure of one lamp will not cause any part of the display to be unreadable.
5.2.2.4.4 Brkhtness. Brightness of illuminated markings and transilluminated controls shidl be
commitible with the ambient environment and operating conditions (e.g., dark adaptation
requkements). Brightness control (dimming) by the o@ator shall
maintain appropriate visibility and operator dark adaptation level.
5.2.3 Scak indicators.
5.2.3,1 General
be provided where applicable to
5.2.3.1.1 TvtRs
of scale indicators. The types of scale indicators that maybe used include:
a. Moving-pointer, fixed-scale, circular, curved (arc), horizontal straight, and vertical straight.
b. Fixed-pointer, moving-scale, cimuhtr, curved (arc), horizontal straight, and vertical straight.
5.2.3.1.2 Use. The me of scale indicators should conform to the criteria in Table Ill and this
section. Moving-inter, fixed-scale indicators are prefencd to fmcd-pointer, moving-scale indkatm
The Mter should be used Gnlywhen necessitated by operational nxquirements or other conditions, and”
when appmvcd bythepructmng activity.
5.2.3.1.3 Type of inf~.
Scale inchtors should be used to display quantitative
information combined with qualitative information (such as trendand direction-of-motion) and where
on!y quantitative information is to be dispkryed and thereis no mquimrmn[ (such as speed and
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5.2.3.1.4 Jmear sca!cs. kixcept where system requirements dictate nonlinearity to satisfy
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5.2.3.1.5 Scale marldng...
523,1.5. ] (j~~dua[ions Scale graduations shall progress by 1,~, or 5
units or declmd
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