MIL-DTL-6484D
4.4.1 Individual tests. Each light assembly shall be subjected to the following tests. In addition, each light
assembly shall be subjected to any other tests specified herein which the inspector considers necessary to determine
compliance with the requirements of this specification.
4.4.1.1 Examination of product. The light assembly shall be inspected to determine compliance with the
requirements specified herein with respect to materials, workmanship, and marking.
4.4.1.2 Operation. The light assembly shall be tested for proper operation. Proper operation shall consist of
4.4.1.2.1, 4.4.1.2.2, 4.4.1.2.3, 4.4.1.2.4 and 4.4.1.2.5 while leads are connected to 28VDC ± 1VDC power supply
monitoring the current.
4.4.1.2.1 Rheostat. Rotate rheostat from "off" position to variable intensity on with a clockwise torque greater
than 4 and less than 16 in oz. In the variable on position rotate rheostat smoothly and continuously from dim to bright
in a clockwise direction in 180 degrees to 360 degrees rotation with a torque less than 8 in oz. and greater than 2 in oz.
The detent shall be at least 1 in oz greater than variable "on" rotation.
4.4.1.2.2 Focusing device. Aim the light at a projector screen, 1 foot from the filament, perpendicular to the
beam of the light. With the rheostat in brightest position and lamp emitting white light, the lamp shall be adjusted from
wide flood 5 inch diameter circle of light not less than 5 Candela (C) to spotlight 2 inch diameter circle of light not less
than 15 C. In both flood and spot position the luminous intensity shall be uniform and evenly distributed with the
intensity not varying greater than 12 C in the specified circles. There shall also not be any light lines or shadow cast on
the projection screen in these specified circles.
4.4.1.2.3 Red filter. Lock filter to emit red light and repeat 4.4.1.2.1 and 4.4.1.2.2 except the candlepower
requirements are reduced to 1 C for flood and 3 C for spotlight.
4.4.1.2.4 Momentary switch. Depress at least 1/2 inch diameter momentary switch while rheostat is in "off "
position with 5 to 20 oz of force for activation and holding. The light shall emit bright light in any combination of flood
or spotlight with no filter or red filter.
4.4.1.2.5 Current drain. The amp meter used in monitoring the current shall never indicate larger current drain
than 3 amps in 4.4.1.2.1, 4.4.1.2.2, 4.4.1.2.3 or 4.4.1.2.4.
5 PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of material is to be performed by DoD or in-house contractor personnel, these
personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging
requirements are maintained by the Inventory Control Point's packaging activities within the Military Service or
Defense Agency, or within the military service's system commands. Packaging data retrieval is available from the
managing Military Department's or Defense Agency's automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not
mandatory.)
6.1 Intended use. The cockpit light is intended for use in aircraft, for map reading and as a general
utility light.
6.2 Acquisition requirements. Acquisition documents should specify the following:
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