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Electrical Life: 50,000 cycles minimum at rated loads at +71°C ambient temperature.
Switch Contacts: Available in silver with gold flash or gold plate.
VISIBLE LEGEND DISPLAYS:
Visible White Legends: The VIVISUN LED displays are available with translucent visible white legends with illuminating characters on an opaque black background.
Display Type N, Luminance and Color: The Type N displays per MIL-PRF-22885F have visible white legends that are reflective white and are always visible in any ambient light except darkened conditions. When the ambient is reduced to darkened conditions, the visible white legends can be energized and produce an average luminance between 0.5 and 3.0 foot-lamberts at rated voltage. This type of display is available with legends illuminated in one of five colors: white, red, NVIS green A, NVIS green B or NVIS white.
Display Type D, Luminance and Color: The Type D displays have white, always visible legends that can be energized to produce an average luminance in excess of 100 foot-lamberts at rated voltage. This type of display is typically used in shipboard applications and is only available in the standard colors blue, green, white, yellow or red.
BACKGROUND ILLUMINATING DISPLAYS:
Background Illumination: The VIVISUN LED displays are available with background illuminating legends wherein the legends do not light but the backgrounds surrounding the legends light up when the display is energized.
Figure 17
MINIMUM CONTRAST FOR SUNLIGHT READABLE DISPLAYS (TYPE S)
|
Color |
Color
Code |
Contrast
f1=f2=15° |
Contrast
f1=f2=30° |
Foot-Lamberts 1/
Minimum Typical |
|
Blue |
T |
0.6 |
0.3 |
200 300 |
|
Green |
G |
0.6 |
0.4 |
300 400 |
|
White |
A |
0.6 |
0.4 |
350 450 |
|
Yellow |
Y |
0.6 |
0.4 |
300 400 |
|
Red |
R |
0.6 |
0.3 |
200 300 |
|
NVIS Blue |
E |
0.6 |
0.25 |
200 300 |
|
NVIS Green A |
H |
0.6 |
0.4 |
300 400 |
|
NVIS Green B |
J |
0.6 |
0.4 |
300 400 |
|
NVIS White |
Q |
0.6 |
0.4 |
350 450 |
|
NVIS Yellow Class A |
K |
0.6 |
0.35 |
300 400 |
|
NVIS Yellow Class B |
U |
0.6 |
0.35 |
300 400 |
|
NVIS Red |
S |
0.6 |
0.25 |
200 300 |
Display Type B, Luminance and Color: The Type B displays are hidden legend, per MIL-PRF-22885F. They feature black legends on an obscure black background. When illuminated the legend appears black and the background appears in color. The display is readable in daylight and does not appear energized in the unlighted mode. Although the contrast requirements do not apply the average luminance exceeds 200 foot-lamberts. These displays are typically used as red colored warning signals as defined in MIL-STD-411F; however, they are available in any of the colors referenced in Figure 17 for special applications.
Display Type A, Luminance and Color: The Type A displays have reflective white, always visible legends on an obscure black background. When illuminated the background appears in color and is discernible in daylight and does not appear energized in the unlighted mode. The average luminance exceeds 200 foot-lamberts at rated voltage, however the contrast requirements are not applicable. These displays are used in special applications and are available with background lighting in any of the colors referenced in Figure 17.
Display Type W, Luminance and Color: The Type W displays have visible black legends on a white translucent background. When illuminated the legend remains black and the background illuminates in color. The average luminance of the background exceeds 100 foot-lamberts at rated voltage and the lighting is only available in the standard colors blue, green, white, yellow or red.
LETTERING STYLES AND CHARACTER SIZES:
Display Type S, Type B and Type W: The Type S, B and W legends are Globe Condensed capitals for character sizes of 0.156", 0.125" and 0.109" in height and Alternate Gothic Condensed capitals for characters 0.072" and 0.090" in height. Custom symbols are also available.
Display Type N, Type A and Type D: The Type N, A and D legends are Futura Medium Condensed capitals for character sizes of 0.156", 0.125" and 0.109" in height and Alternate Gothic Condensed capitals for characters 0.072" and 0.090" in height. Custom symbols are also available
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