6 - 17
Optical
Specification
Maximum Minimum Typical
Notes
Viewable screen size
Diagonal
37.6"
955mm
Width
30.2"
775mm
Height
22.4"
569mm
Image position
+1 pixel
–1 pixel
0 pixel
Deviation of center pixel
Rotation
– ½ pixel
+½ pixel
0 pixel
Slope displacement over image length
Pincushion/Barrel
–1 pixel
+1 pixel
0 pixel
Deviation at center of edges
Keystoning
–1 pixel
+1 pixel
0 pixel
Slope displacement over image length
Focus/Aberration
No objectionable defocusing or chromatic
aberration at 1.5D by a 20/20 vision viewer
Screen
Type
Two-part screen composed of a front UCS
type lenticular and a back Fresnel lens
Gain
6.5
±10% nominal
Fresnel Focal Length
680mm
Brightness
ANSI white
125 fL for
VN-3820
150 fL for
VN-3830
Using ANSI 9 point average measured normal
to screen
Non-uniformity
Using ANSI 13 point measurement
Bright
±25%
Dim
±40%
Equivalent Lumens
150
Using ANSI 9-point average
Viewing angle
Relative to normal axis of screen
Horizontal half-gain
±21°
Vertical half-gain
±4°
Vertical quarter-gain
±10°
Resolution
Horizontal
640 color pixels
Vertical
480 color pixels
Lamp life
Average according to UHP specification (50%
still operational after specified average lamp
life)
VN-3820-VA
8000 hours
VN-3830-VA
4000 hours
Environmental
Specification
Maximum Minimum Typical Notes
Temperature operating
40°C
0°C
All performance specifications are
maintained within this temperature range
non operating
60°C
-10°C
Altitude (barometric pressure)
10,000 ft
Above sea level, or equivalent
barometric pressure
Humidity
80% R.H.
20% R.H.
≤
40°C non-condensing
Summary of Contents for Leopard VN-3820-VA
Page 1: ...Leopard VN 3820 VA User Guide ...
Page 2: ......
Page 3: ...VN 3820 VA VN 3830 VA User s Guide 070 0032 06 7 October 2003 ...
Page 8: ...vi vi ...
Page 14: ...1 6 ...
Page 28: ...2 14 ...
Page 52: ...3 24 ...
Page 57: ...4 5 Don t spray liquids directly onto the face of the screen ...
Page 58: ...4 6 ...
Page 63: ...5 5 ...
Page 66: ...5 8 ...
Page 84: ...6 18 ...
Page 91: ...6 25 Bottom view showing measured locations of parts ...
Page 95: ...6 29 ...
Page 99: ...6 33 ...
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