MIL-PRF-22885/77E
REQUIREMENTS:
Design and construction: See figure 1. Basic switches shall be MIL-PRF-8805/101 switches listed on
QPL-8805.
Enclosure design: 1 (unsealed).
Temperature characteristic: 1 (-55°C to +85°C).
Vibration grade: 3 (10-2000 Hz).
Operation: A (momentary action), D (magnetically held), E (Position indicating, alternate action),
H (indicator light).
Illuminated color:
Display type W (white background) - See table I.
Display type S (Sunlight readable) - See table II.
TABLE I. Illuminated color - display type W.
Chromaticity coordinates 1/
2200° kelvin
Colors
X
Y
Green
.350
SL 2/
.350
.610
.185
.610
.265
.720
Yellow
.530
.442
.544
SL 2/
.571
.402
.582
SL 2/
Red
.680
.300
.690
.310
.715
.265
.725
.275
Blue
.180
.305
.065
.250
.095
.150
.225
.220
White
.484 ref
.415 ref
X is not less than .350.
Y is not greater than .470
Y - Yo or Yo - Y is not numerically greater than
0.03X.
(Yo is the Y coordinate of the Planckian radiator for
a given X).
1/ The chromaticities of the diffusing lenses or colored
filters expressed as X and Y coordinates on the CIE
chromaticity diagram shall lie within areas bounded by the coordinates
listed for each color, using a source illuminate of 2200°K.
2/ SL = spectrum locus (where intersected by other of
coordinate pair).
4
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