NEC NP905 - XGA LCD Projector Installation Manual

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NEC NP905 - XGA LCD Projector Installation Manual Manual pdf 1 page image

NEC Display Solutions of America, Inc.NP905 Installation GuideCeiling Mounted and Desktop Rev 1.1www.necdisplay.com NP905 Page 1 of 6ContentsProduct Description, Lens Specs, Notes and Formulas Pg 1Diagrams & Distance Charts Pg 2Cabinet Dimensions Pg 3Cabinet Dimensions cont Pg 4Ceiling Mount Dimensions and Input Panel Pg 5Control Codes Pg 6Product DescriptionType: 3 panel LCD projector, Brightness: 2000 ANSI Lumens0.63” p-Si TFT w/MLA Dimensions: 12.2”(W) x 4.9”(H) x 11.4”(D)Resolution: 1024 x 768 Weight: 8.16 lbsFan Noise: 35 dB / 29dB @ 1 meter BTU’s: 1055 BTU/hourPower Consumption: 310W (max)Lens SpecificationsThrow Ratio: 1.5 – 1.8:1 (for 100” diagonal) Focal Length: 18.89mm – 22.67mmOffset Angle: 8.4° - 10.0° (for 100” diagonal) F/#: 1.70 - 2.07Screen Sizes: 21” - 300” diagonal (4:3) 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.• All calculations are based on 4:3 aspect ratio.• Distances are in inches, for millimeters multiply by 25.4.• Distances may vary ±5%.FormulasThe Projection Formulas use the image width for calculation. For proper projection placement, determine the image widthfor the desired screen size. Use the Screen Formulas below to calculate all screen dimensions. Plug in the width for “W” inthe Projection Formulas.Refer to the diagrams and charts for popular screen sizes on page 2: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(screen bottom for desktop application)Projection Formulas:B = 0.258WC(wide) = 1.4805W – 1.823C(tele) = 1.7765W – 1.820D = 0.118Wα(wide) = tan¯¹ (B/C(wide))α(tele) = tan¯¹ (B/C(tele))