NEC LT240 Installation Manual

Also see for LT240 Series: Supplementary guide Control commands Command guide Command guide Control commands

NEC LT240 Installation Manual Manual pdf 1 page image

NEC Solutions (America), Inc.Visual SystemsLT240 Installation GuideDesktop and Ceiling MountD = 0.1503H - 0.021v3.0www.necvisualsystems.com Page 1 of 7ContentsProduct Description, Lens Specs, Notes and Formulas Page 1Projection Distances and Screen SizesCeiling Mount Installation Page 2Desktop Setup Page 3Cabinet DimensionsTop, Front and Right Side Page 4Bottom, Back and Left Side Page 5Ceiling Mount Dimensions Page 6Control Codes Page 7Product DescriptionType: Single chip DMDTM projector Dimensions: 10.24”(W) x 4.74”(H) x 12.56”(D)Native Resolution: 1024 x 768 (XGA) Weight: 7.1 lbsBrightness: 1600 ANSI LumensLens SpecificationsThrow Ratio: 1.5 - 1.9:1(approx.) Focal Length: 22.4mm – 27.0mmOffset Angle: 15.8 °-18.8 ° (approx.) F/#: 2.5 – 2.9Screen Sizes: 30”-500” Manual Focus/Manual ZoomNotes 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 localbuilding codes.• All calculations are based on 4:3 aspect ratio.• Distances are in inches, for millimeters multiply by 25.4.• Distances may vary ±5%.FormulasUnits: 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 centerC = Throw distanceD = Vertical distance between lens center and screen top (screen bottom for desktop application)α = Throw AngleProjection Formulas: Screen Formulas (4:3):B = 0.5253H – 0.021 H = Screen Diagonal x 4/5C (wide) = 1.5607H – 1.751 V = Screen Diagonal x 3/5C (tele) = 1.8789H – 1.694 Screen Diagonal = H x 5/4α (wide) = tan-1 (B/C(wide))α (tele) = tan-1 (B/C(tele))