NEC VT670/K Installation Manual

VT470/570/670 Installation Guide
Ceiling Mounted and Desktop
Contents
Product Description, Lens Specs, Notes and Formulas
Diagrams and Distance Charts
Cabinet Dimensions
Ceiling Mount Dimensions
Input Panel and Control Codes
Product Description
Type: 3 panel LCD projector,
0.7" p-Si TFT (VT670 w/MLA)
Resolution: VT470:
VT570/670:
Lens Specifications
Throw Ratio: 1.5 - 1.8:1(for 100" diagonal)
Offset Angle: 9.6°-11.5° (for 100" diagonal)
Screen Sizes: 21"-300" diagonal (4:3)
Notes
For screen sizes not indicated on the projection charts, use the formulas below.
If a value in a chart does not match the results of the formulas, use the values in the chart.
The ceiling must be strong enough to support the projector and the installation must be in accordance with any local
building codes.
All formulas are based on a 4:3 aspect ratio and screen.
Distances are in inches, for millimeters multiply by 25.4.
Distances may vary ±5%.
Formulas
The Projection Formulas use the image width for calculation. Image width is the same for all aspect ratios, only vertical image size
varies. For proper projector placement, determine the image width for a desired screen size. Use the Screen Formulas below to
calculate all screen dimensions. Plug in the image width for "W" in the Projection Formulas.
Refer to the diagrams and charts for popular screen sizes on page 2.
Definitions:
W = Image Width
H = Image Height (Size)
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and screen top (screen
bottom for desktop)
α = Projection angle
Projection Formulas:
B = 0.2986W
C (wide) = 1.4813W - 1.425
C (tele) = 1.7913W - 1.406
D = 0.0764W
α (wide) = tan -1
(B/C(wide))
α (tele) = tan -1
(B/C(tele))
www.necvisualsystems.com
800x600
1024x768
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Pg. 2
Pg. 3 - 4
Pg. 5
Pg. 6
Brightness: VT470: 2000 ANSI lumens
VT570: 1300 ANSI lumens
VT670: 2100 ANSI lumens
Dimensions: 11.57"(W) x 4.43"(H) x 11.10"(D)
Weight: 6.4 lbs
Focal Length: 21.6mm - 25.9mm
F/#: 1.7 - 2.0
Manual Zoom / Manual Focus
4:3 Screen Formulas:
W = H x 4/3
H = W x 3/4
Screen Diagonal = W x 5/4
NEC Solutions (America), Inc.
Visual Systems
VT470/570/670 Page 1 of 6
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