NEC MultiSync LT80 Installation Data

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NEC MultiSync LT80 Installation Data Manual pdf 1 page image

Visual Systems DivisionTechnical BulletinMultiSync LT80 Installation DataDesk Top and Ceiling MountPage1ContentsNotes and Formulas Page 1Projection Distances and Screen SizesCeiling Mount Page 2Desktop Setup Page 3Cabinet Dimensions Page 4Ceiling Mount Dimensions Page 5Notesß For Screen Sizes of 24 to 300 inches not indicated on the projection tables, use the formulas below.ß Set the projection distance based on the width of the screen.ß If the figures on the tables do not match the figures in the formulas, use the figures in the table.ß All dimensions are in inches. Multiply by 25.4 for millimeters.ß Distances may vary +/- 5%.FormulasUnits: InchesA = C / COS αB = ((H x 1.25) – 0.2) x 3 / 25.4C (WIDE) = ((H x 12.5 / 243) – 0.06) x 39.37C (TELE) = ((H x 12.5 / 187) – 0.06) x 39.37αα = TAN -1 ((H x 0.375) + B) / CH = Width of screenA = Distance between lens center and screen centerB = Vertical distance between lens center and screen bottom (screen top for ceiling mount)C = Horizontal throw distance between screen surface and projector lensαα = Offset Angle of image path center line with reference to desktop or ceiling

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