NEC LT265 LT265 IG - Page 1

LT265 Installation Guide Used with 4:3 and 16:9 screens Contents Product Description, Lens Specs, Screen/Aspect Ratio, Notes and Formulas Diagrams and Distance Charts, 4:3 Screens 16:9 Screens Cabinet Dimensions, Top, Front and Right Bottom, Back and Left Ceiling Mount Dimensions Input Panel and Control Codes Pg. 1 Pg. 2 Pg. 3 Pg. 4 Pg. 5 Pg. 6 Pg. 7 NEC Solutions (America), Inc. Visual Systems v1.1 Product Description Type: 1chip DMDTM projector, Resolution: 1024 x 768 (4:3) 1024 x 576 (16:9) Brightness: 2500 ANSI lumens Color Wheel: 4 segment Dimensions: 10.24"(W) x 4.84"(H) x 12.32"(D) Weight: 6.4 lbs Lens Specifications Throw Ratio: 2.0 - 2.4:1(for 100" diagonal) Offset Angle: 12.4°-14.9° (for 100" diagonal) Screen Sizes: 30"-500" diagonal (4:3) Focal Length: 28.2mm - 33.6mm F/#: 2.1 - 2.3 Manual Zoom / Focus Screen/Aspect Ratio Both 4:3 and 16:9 screens are fully supported with proper aspect ratio control for both type sources using NEC developed scaling technology. By selecting the screen type in the menus, Aspect Ratio control is reconfigured for that screen type. • For a 4:3 screen; select "4:3" in the "Screen" menu for proper aspect ratio control of 4:3 and 16:9 sources. • For a 16:9 screen; select "16:9" in the "Screen" menu for proper aspect ratio control of 4:3 and 16:9 sources. *Factory default "Screen" setting is "4:3". Notes ƒ For screen sizes not indicated on the projection charts, use the formulas below. ƒ The ceiling must be strong enough to support the projector and the installation must be in accordance with any local building codes. ƒ Distances are in inches, for millimeters multiply by 25.4. ƒ 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 and 3. Definitions: 4:3 Screen Formulas: W = Image Width W = H x 4/3 H = Image Height (Size) H = W x 3/4 B = Vertical distance between lens center and screen center Screen Diagonal = W x 5/4 C = Throw distance D = Vertical distance between lens center and screen top 16:9 Screen Formulas: (screen bottom for desktop application). W = H x 16/9 α = Projection angle H = W x 9/16 Screen Diagonal = W x 18.35756/16 Projection Formulas: B = 0.5254W - 0.029 Vertical Position for a 16:9 screen: The Vertical Position adjustment moves the 16:9 C (wide) = 1.9976W - 2.373 image up and down in the unused portion of the 4:3 panel. This adjustment is only C (tele) = 2.4211W - 2.086 available when the projector is set for '16:9' in the 'Screen' menu. The range of Vertical D(4:3) = 0.1504W - 0.029 Position is dependent on aspect ratio and 3D Reform used. If 3D Reform is not used, D(16:9) = 0.24415W - 0.029 α (wide) = tan-1 (B/C(wide)) α (tele) = tan-1 (B/C(tele)) the approximate range of Vertical Position is +/-0.167H (H=Screen Height) when using a 16:9 screen. www.necvisualsystems.com LT265 Page 1 of 7