NEC MultiSync LT140 Installation Data

Also see for LT180 - LT 180 XGA DLP Projector: Supplementary guide Control commands Command guide Command guide Control commands

NEC MultiSync LT140 Installation Data Manual pdf 1 page image

Visual Systems DivisionTechnical BulletinMultiSync LT140 Installation DataDesktop and Ceiling MountPage1ContentsNotes and Formulas Page 1Projection Distances and Screen SizesDesktop Setup Page 2Ceiling Mount Page 3Cabinet Dimensions Page 4Notesß For Screen Sizes of 25 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 α H = Screen Diagonal (4:3) x 4 / 5B = 3.7H / 25.4 H = Screen WidthC (WIDE) = (2.0099 x H) – 1.9927C (TELE) = (2.4119 x H) – 2.0365D = E/2E = H / 4 x 3αα = TAN -1 ((H x 0.375) + B) / CA = 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 lensD = Vertical distance between screen center and screen bottom (screen top for ceiling mount)E = Screen Heightαα = Offset Angle of image path center line with reference to desktop or ceiling

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