MIL-PRF-22885/67J
TABLE V. Luminance for display type W. 1/
Color
Color
Brightness (foot-lamberts)
code
Without EMI screen 2/
With EMI screen 3/
Blue
B
8.0
4.0
Green
G
50.0
25.0
Red
R
30.0
15.0
White
W
180.0
90.0
Yellow
Y
300.0
150.0
1/ When illuminated by two MIL-DTL-6363/8 lamps of .30 ±.05 mean spherical
candlepower at 28 volts dc. Readings are for lens configuration 0.
2/ Minimum average.
3/ For information only.
Sunlight readability: Applicable to display type S switches, see table VII. Units shall be tested for 01 = 45° and
02 = 0° only. This procedure does not test readability under specularly reflective (glare) condition. The average
contrast ratio of each legend character to the background shall be 0.6 minimum in the lighted legend condition. In the
unlighted legend condition, the average contrast ratio of each legend character to the background shall have an
absolute value less than or equal to 0.1.
Marking: Terminals and basic switch identification shall be marked as shown on figure 1.
Qualification inspection:
Group submission: All part numbers will be approved for inclusion in the qualified products list upon successful
completion of testing specified in table VI. Table VI is based on use of qualified MIL-PRF-8805/4 or MIL-PRF-
8805/109 basic switches in the assembly.
TABLE VI. Qualification inspection - group submission.
Inspection 1/
Sample
Group I
All samples
Group II
M22885/67-490RG 3/ (4 samples)
Group III
M22885/67-114RG (2 samples)
Group VI 2/
M22885/67-114RG (2 samples)
M22885/67-442RG 3/ (2 samples)
Group VII 4/
M22885/67-490RG 3/ (2 samples)
Group VIII
Type S display: 2 pushbuttons of each color (10 samples), of
lens configuration 0, and with EMI/RFI shielding. 3/ 5/
Type W display: 2 pushbuttons of each color (10 samples),
of lens configuration 0, and without EMI/RFI shielding. 5/
1/ Inspection groups in accordance with qualification inspection table of MIL-PRF-22885.
2/ Electrical endurance:
Silver contacts - test resistive load, ac, only.
Gold contacts - test sea level resistive, 28 V dc only.
Lamps used during electrical endurance test shall be MIL-DTL-6363/8 for type W
display and MIL-DTL-6363/6 for type S display.
3/ Legend shall be in accordance with MIL-PRF-22885 sunlight readability test paragraph.
4/ Low level life test not required.
5/ Pushbuttons shall be assembled to any representative switch body.
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