NEC MT850 Installation Instruction
Visual Systems Division
Technical Bulletin
Technical Bulletin
MT850 Installation Data
with Optional MT10RL Rear Lens (1.0:1)
Rev. 1.7
Page 1
Contents
Product Description, Lens Specs, Notes and Formulas
Page 1
Projection Distances and Screen Sizes
Rear Projection Installation
Page 2
Other Applications
Rear Projection Systems
Page 3
Cabinet Dimensions
Top, Front and Right Side
Page 4
Bottom, Back and Left Side
Page 5
Timing Chart
Page 6
PC Control Codes
Page 7
Product Description
Type:
3 panel, 1.3” p-Si TFT LCD projector
Dimensions: 11.1”(W) x 5.3”(H) x 16.9”(D) (
w/lens installed)
Native Resolution:
800 x 600
Weight:
17.4 lbs
(w/lens installed)
Brightness:
1700 ANSI Lumens
Lens Specifications
MT10RL Zoom Lens
Throw Ratio:
0.94 – 1.01:1
Screen Sizes:
40 – 300” Diagonal
Offset Angle:
0
°
Distortion:
0.5% TV Distortion
Focal Length:
27mm
MTF (
@
30 lp/mm Green):
Ctr >70% Corner >60%
F/#:
2.3
AR Coated:
Multi-Layer Coated
Focus Adjustment:
Manual Focus
Chromatic Aberration:
Max 10
µ
m
Notes
§ For Screen Sizes of 40 to 200 inches not indicated on the projection tables, use the formulas below.
§ If the figures on the tables do not match the results of formulas, use the figures in the table.
§ The ceiling must be strong enough to support the LCD projector and the installation must be in accordance with any local
§ If the figures on the tables do not match the results of formulas, use the figures in the table.
§ The ceiling must be strong enough to support the LCD projector and the installation must be in accordance with any local
building codes.
•
All calculations are based on 4:3 aspect ratio.
•
Distances are in inches, for millimeters multiply by 25.4.
•
Distances may vary
±
5%.
Formulas
Units: Inches (for millimeters multiply final number by 25.4)
D = Screen Diagonal (4:3)
H = D x 0.8
H = Screen Width (4:3)
V = D x 0.6
V = Screen Height (4:3)
M = 0.96212H
M = Projection magnification
C = 1.0681M – 2.468
C = Throw distance
α
= 0
°
α = Throw angle