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NEC LT220 Installation Manual
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NEC LT220 Installation Manual

NEC LT220 Installation Manual

Desktop and ceiling mount
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LT220 Installation Guide
Desktop and Ceiling Mount
Contents
Projection Distances and Screen Sizes
Product Description
Type:
Single chip DMD
Native Resolution:
800 x 600 (SVGA)
Brightness:
2000 ANSI Lumens
Lens Specifications
Throw Ratio:
2.0 - 2.5:1(approx.)
°
Offset Angle:
12.3
-14.8
Screen Sizes:
30"-500"
Notes
For screen sizes 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 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)
Definitions:
H = Horizontal Screen Width (4:3)
V = Vertical Screen Height (4:3)
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 application)
α = Throw Angle
Projection Formulas:
D = 0.1671H - 0.011
-1
α (wide) = tan
(B/C(wide))
-1
α (tele) = tan
(B/C(tele))
www.necvisualsystems.com
TM
projector
°
(approx.)
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Dimensions: 10.24"(W) x 4.74"(H) x 11.81"(D)
Weight:
6.5 lbs
Focal Length: 28.4mm - 34.0mm
F/#:
2.2 - 2.5
Manual Focus/Manual Zoom
Screen Formulas (4:3):
NEC Solutions (America), Inc.
Visual Systems
Page 1 of 7
v3.0

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  • Page 1: Table Of Contents

    NEC Solutions (America), Inc. Visual Systems LT220 Installation Guide Desktop and Ceiling Mount v3.0 Contents Product Description, Lens Specs, Notes and Formulas Page 1 Projection Distances and Screen Sizes Ceiling Mount Installation Page 2 Desktop Setup Page 3 Cabinet Dimensions...

  • Page 2: Ceiling Mount Installation

    NEC Solutions (America), Inc. Visual Systems LT220 Installation Guide Desktop and Ceiling Mount v3.0 Projection Distance and Screen Size for Ceiling Mount The following shows the proper relative position of the projector and screen. Refer to the table for installation data.

  • Page 3: Desktop Setup

    NEC Solutions (America), Inc. Visual Systems LT220 Installation Guide Desktop and Ceiling Mount v3.0 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.

  • Page 4: Cabinet Dimensions

    NEC Solutions (America), Inc. Visual Systems LT220 Installation Guide Desktop and Ceiling Mount v3.0 Cabinet Dimensions The following diagrams show the cabinet dimensions for the LT220. Dimensions are in inches. For millimeters multiply by 25.4. 4.094 3.622 2.756 2.244 3.169 VENTILATION 10.236...

  • Page 5: Bottom, Back And Left Side

    NEC Solutions (America), Inc. Visual Systems LT220 Installation Guide Desktop and Ceiling Mount v3.0 Cabinet Dimensions (continued) The following diagrams show the cabinet dimensions for the LT220. Dimensions are in inches. For millimeters multiply by 25.4. VENTILATION FOR CEILING MOUNT 4.213 2.559...

  • Page 6: Ceiling Mount Dimensions

    Optional Ceiling Mount Dimensions (Model #: LT60CM) The following diagrams show ceiling mount dimensions for the LT220. Dimensions are in inches. For millimeters multiply by 25.4. The LT60CM comes with a threaded pipe base and a flush base for minimal mount height.

  • Page 7: Control Codes

    NEC Solutions (America), Inc. Visual Systems LT220 Installation Guide Desktop and Ceiling Mount v3.0 Control Codes Function Code Data POWER ON POWER OFF INPUT SELECT RGB 1 INPUT SELECT RGB 2 INPUT SELECT VIDEO INPUT SELECT S-VIDEO INPUT SELECT VIEWER...

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