NEC MultiSync LT245 Installation Manual

Also see for MultiSync LT245: Control commands Control commands Compatibility chart Brochure & specs User manual

Contents

NEC MultiSync LT245 Installation Manual Manual pdf 1 page image

www.necvisualsystems.com LT245 Page 1 of 7NEC Solutions (America), Inc.Visual SystemsLT245 Installation GuideUsed with 4:3 and 16:9 screens v1.1ContentsProduct Description, Lens Specs,Screen/Aspect Ratio, Notes and Formulas Pg. 1Diagrams and Distance Charts, 4:3 Screens Pg. 216:9 Screens Pg. 3Cabinet Dimensions, Top, Front and Right Pg. 4Bottom, Back and Left Pg. 5Ceiling Mount Dimensions Pg. 6Input Panel and Control Codes Pg. 7Product DescriptionType: 1chip DMDTM projector, Color Wheel: 4 segmentResolution: 1024 x 768 (4:3) Dimensions: 10.24”(W) x 4.84”(H) x 12.40”(D)1024 x 576 (16:9) Weight: 7.1 lbsBrightness: 2200 ANSI lumensLens SpecificationsThrow Ratio: 1.5 - 1.9:1(for 100” diagonal) Focal Length: 22.1mm – 26.5mmOffset Angle: 15.7°-18.7° (for 100” diagonal) F/#: 2.2 – 2.5Screen Sizes: 30”-500” diagonal (4:3) Manual Zoom / FocusScreen/Aspect RatioBoth 4:3 and 16:9 screens are fully supported with proper aspect ratio control for both type sources using NEC developedscaling 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 For screen sizes not indicated on 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 localbuilding codes. Distances are in inches, for millimeters multiply by 25.4. Distances may vary ±5%.FormulasThe Projection Formulas use the image width for calculation. Image width is the same for all aspect ratios, only vertical image sizevaries. For proper projector placement, determine the image width for a desired screen size. Use the Screen Formulas below tocalculate 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 4/3H = Image Height (Size) H = W x 3/4B = Vertical distance between lens center and screen center Screen Diagonal = W x 5/4C = Throw distanceD = Vertical distance between lens center and screen top 16:9 Screen Formulas:(screen bottom for desktop application). W = H x 16/9α = Projection angle H = W x 9/16Screen Diagonal = W x 18.35756/16Projection Formulas:B = 0.5248W - 0.053 Vertical Position for a 16:9 screen: The Vertical Position adjustment moves the 16:9C (wide) = 1.5692W – 1.978 image up and down in the unused portion of the 4:3 panel. This adjustment is onlyC (tele) = 1.8836W – 1.9 available when the projector is set for ‘16:9’ in the ‘Screen’ menu. The range of VerticalD(4:3) = 0.1498W - 0.053 Position is dependent on aspect ratio and 3D Reform used. If 3D Reform is not used,D(16:9) = 0.24355W - 0.053 the approximate range of Vertical Position is +/-0.167H (H=Screen Height) when usingα (wide) = tan-1 (B/C(wide)) a 16:9 screen.α (tele) = tan-1 (B/C(tele))