Contec PT-E731, User Manual

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2 System Reference
PT-E731, PT-E731S, PT-E731H, PT-E731HS User’s Manual
15
Display Optical Specification
Table 2.3. Display Optical Specification
Parameter Condition Min. Typ.
φ = 180° 65deg 80deg
Visual angle
(vertical)
φ
= 0° 65deg 80deg
φ
= +90° 65deg 80deg Visual angle
(horizontal)
CR ≥ 10
φ = -90°
Display.
Monochrome
65deg 80deg
PT-E731,PT-E731S(Display in white) 360cd/m
2
450cd/m
2
Surface
brightness
(at center)
PT-E731H,PT-E731HS(Display in
white)
250cd/m
2
320cd/m
2
* “Surface brightness” represents a numerical value per display. The expected brightness through a touch panel is about
80% lower than the above value.
Contrast ratio (CR) =
Brightness at screen center with white displayed
Brightness at screen center with black displayed
Left
( φ = -90
o
)
Z
Y
X
Top
( φ = 180
o
)
Right
(
φ
= 90
o
)
Bottom
( φ = 0
o
)
( θ = 0
o
)
Measurement direction
θ
Module
φ
Figure 2.1. Definition of viewable range
CAUTION
The above optical specification data shows optical characteristics of the liquid crystal in the display;
the data does not represent the actual view on the display or its viewing angles.