MIL-PRF-22885/96D
REQUIREMENTS:
Dimensions and configurations: See figure 1.
Complete switch shall consist of:
Base assembly: Includes basic switches (MIL-PRF-8805/4), mounting sleeve and moisture/RFI gasket.
Cap assembly: Includes necessary color filters, diffusers and front lens plate (.600 square lens engraving area).
Accepts 4 T-1-3/4 midget flange base incandescent lamps, not included, order separately. Accommodates a film
legend of .645 x .645 ±.010 x .004 ±.001, not supplied. Includes RFI screen.
Enclosure design: 2 (dripproof) panel seal only. Cap assembly and lamp circuit not sealed.
Temperature characteristic: 1 (-55°C to +85°C).
Vibration grade: 2 (10-500 Hz).
Dielectric withstanding voltage: Dielectric withstanding voltage on lamp circuit not applicable after seal test:
Dielectric withstanding voltage at reduced barometric pressure:
Altitude: 50,000 feet (method 105, MIL-STD-202, test condition B).
Operating characteristics:
Operation force: 45 ounces maximum.
Cap assembly extraction force: 4 pounds ± 1 pound.
Lamps: Accommodates 4 T-1-3/4 midget flange base lamps. Not included, order separately. Select lamps of .75
watt or less power rating.
Display type: W, translucent white, which when illuminated shows the required color.
Material: Base assembly and mounting sleeve: Stainless steel.
Electrical ratings: See tables I and II.
Luminance and color: See table III.
Weight: .12 pound maximum.
EMI/RFI: Cap-lampholder assembly to have screen and contact for RFI shielding. Switches shall be tested to
determine shielding effectiveness in accordance with the shielding efficiency test of MIL-PRF-22885. The test shall
consist of electric field and plane wave measurements performed at the following frequencies. Attenuation shall not
be less than specified below.
Electric
Minimum
Plane
Minimum
field
attenuation
wave
attenuation
15 kHz
60 dB
100 MHz
47 dB
150 kHz
60 dB
400 MHz
39 dB
500 kHz
60 dB
1 GHz
33 dB
1 MHz
60 dB
2.5 GHz
28 dB
10 MHz
60 dB
10 GHz
20 dB
4
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