NEC LT180 Installation Manual

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LT180 Installation Guide
Floor and Ceiling Configuration
Contents
Product Description, Lens Specs, Screen/Aspect Ratio,
Notes and Formulas
Diagrams & Distance Charts; Ceiling Mounted
Cabinet Dimensions; Top, Front and Right
Bottom, Back and Left
Ceiling Mount Dimensions
Input Panel and Control Codes

Product Description

Type: 1 chip DMD
Resolution: 1024 x 768
Brightness: 2000 ANSI Lumens
Contrast Ratio: 1000:1

Lens Specifications

Throw Ratio: 1.37 - 1.63:1 (for 100" Diag)
°
Offset Angle: 10.5 - 12.4
Screen Sizes: 30"-200" diagonal (4:3)
Notes
•
For screen sizes not indicated in the projection charts, use the formulas below.
•
The ceiling must be strong enough to support the projector and the installation must be in accordance with any local
building codes.
•
Distances are in inches, for millimeters multiply by 25.4.
• Distances may vary ±5%.
Formulas
The Projection Formulas use the image width for calculation. 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 & 3.
Definitions:
W = Image Width
H = Image Height (Size)
B = Vertical distance between lens center and screen center
C = Throw distance
Projection Formulas:
B = 0.2980W
C(wide) = 1.3908W – 1.967
C(tele) = 1.6511W – 1.945
α(wide) = tan -1
(B/C(wide))
α(tele) = tan
-1
(B/C(tele))
www.necvisualsystems.com
Floor
TM
projector
°
(for 100" Diag)
NEC Solutions (America), Inc.
Visual Systems Division
Pg 1
Pg 2
Pg 3
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Pg 5
Pg 6
Pg 7
Color Wheel: 4 Segments (2x)
Dimensions: 7.37"(W) x 5.24"(H) x 13.60"(D)
Weight: 6.4 lbs
Manual Focus/Manual Zoom
Focal Length: 19.7mm – 23.0mm l
F/#: 2.0 – 2.48
4:3 Screen Formulas:
W = H x 4/3
H = W x 3/4
Screen Diagonal = W x 5/4
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