NEC LT154 Installation Data
Nec lt154: installation guide
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Also See for LT154:
- User manual (60 pages) ,
- Quick manual (2 pages) ,
- Quick connect manual (2 pages)
Table of Contents
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LT154/155/156 Installation Data
Desktop and Ceiling Mount
Contents
Projection Distances and Screen Sizes
Product Description
Type:
LT154: 3 panel, 0.9" p-Si non-MLA LCD projector
LT155: 3 panel, 0.9" p-Si w/MLA LCD projector
LT156: 3 panel, 0.9" p-Si w/MLA LCD projector, w/DVI Input
Brightness:
LT154: 900 ANSI Lumens
LT155/156: 1200 ANSI Lumens
Lens Specifications
Throw Ratio:
1.9-2.0:1(Wide) / 2.2-2.3:1(Tele)
Offset Angle:
9.0° (Wide) / 7.5° (Tele)
Screen Sizes:
25" - 300" Diagonal
Notes
For Screen Sizes of 25 to 300 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
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
V = D x 0.6
M 1.38889H
B = 0.2165M
C (Wide) = 1.4483M - 2.165
C (Tele) = C (Wide) x 1.15
D = 0.0535M
-1
(wide) = tan
(B/C(wide))
-1
(tele) = tan
(B/C(tele))
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Focal Length:
F/#:
Focus Adjustment:
H = Screen Width (4:3)
V = Screen Height (4:3)
M = Projection magnification
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and top of screen (bottom of screen
= Throw angle
Native Resolution:
1024 x 768
Dimensions: 8.2"(W) x 11.1"(D) x 2.8"(H)
Weight:
4.9 lbs
36.5 - 42mm
2.0 - 2.3
Manual Focus / Manual Zoom
for desktop application)
Visual Systems
Rev. 1.8
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Table of Contents
Related Manuals for NEC LT154
Summary of Contents for NEC LT154
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Page 1: Table Of Contents
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. -
Page 2: Ceiling Mount Installation
Desktop and Ceiling Mount Projection Distance and Screen Size for Ceiling Mount The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of installation. Distances are in inches. For millimeters multiply by 25.4. -
Page 3: Desktop Setup
LT154/155/156 Installation Data Desktop and Ceiling Mount Projection Distance and Screen Size for Desktop The following diagram shows the relationship between projector position and the screen. Distances are in inches. For millimeters multiply by 25.4. Desktop Setup Screen Ctr Lens Ctr... -
Page 4: Cabinet Dimensions
LT154/155/156 Installation Data Desktop and Ceiling Mount Cabinet Dimensions The following diagrams show the cabinet dimensions for the LT154/155/156. Dimensions are in inches. For millimeters multiply by 25.4. 2.49 8.15 Visual Systems Rev. 1.8 0.197 Page 4... -
Page 5: Bottom, Back And Right Side
LT154/155/156 Installation Data Desktop and Ceiling Mount Cabinet Dimensions (continued) The following diagrams show the cabinet dimensions for the LT154/155/156. Dimensions are in inches. For millimeters multiply by 25.4. 4.83 4.09 M4*8 3.44 4.07 R 5.20 R 5.20 2.99 M4*8 M4*8 2.76... -
Page 6: Ceiling Mount Dimensions
LT154/155/156 Installation Data Desktop and Ceiling Mount Ceiling Mount Dimensions (Model #: LT55CM) The following diagrams show ceiling mount dimensions for the LT154/155/156. Dimensions are in inches. For millimeters multiply by 25.4. 5.2726 Ø 1.9000 Front 8.6500 4.3250 Visual Systems Rev. -
Page 7: Bottom, Back And Right Side
LT154/155/156 Installation Data Desktop and Ceiling Mount Ceiling Mount Dimensions (Model #: LT55CM) (continued) The following diagrams show ceiling mount dimensions for the LT154/155/156. Dimensions are in inches. For millimeters multiply by 25.4. 9.2726 Front 8.6500 Visual Systems Rev. 1.8 2.8050... -
Page 8: Pc Control Codes
To GND of PC NOTE 1: Pins 2, 3, 5, 6 and 8 are used inside the projector. NOTE 2: For long cable runs it is recommended to set communication speed within projector menus to 9600 bps. Code Data To RxD of PC...