NEC VT49 VT49 IG - Page 1

VT49 Installation Guide Ceiling Mounted and Desktop Contents Product Description, Lens Specs, Notes and Formulas Diagrams & Distance Charts Cabinet Dimensions Ceiling Mount Dimensions Input Panel and Control Codes Product Description Type: 3 panel LCD projector, 0.6" p-Si TFT w/MLA Resolution: 800 x 600 Fan Noise: 32 dB / 25dB @ 1 meter Power Consumption: 205W (max) Lens Specifications Throw Ratio: 1.8:1 (for 100" diagonal) Offset Angle: 8.4° (for 100" diagonal) Screen Sizes: 25" - 300" diagonal (4:3) Pg 1 Pg 2 Pg 3-4 Pg 5 Pg 6 NEC Display Solutions of America, Inc. Rev 1.2 Brightness: Dimensions: Weight: BTU's: 1600 ANSI Lumens 12.1"(W) x 10.2"(H) x 4.4"(D) 6.17 lbs 699 BTU/hour Focal Length: 22.4 mm F/#: 1.70 Manual Focus/Electronic Zoom Notes ƒ 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%. Formulas The Projection Formulas use the image width for calculation. For proper projection placement, determine the image width for the desired screen size. Use the Screen Formulas below to calculate all screen dimensions. Plug in the width for "W" in the Projection Formulas. Refer to the diagrams and charts for popular screen sizes on page 2: Definitions: W = Image Width H = Image Height (size) B = Vertical distance between lens center and screen center C = Throw distance D = Vertical distance between lens center and screen top (screen bottom for desktop application) 4:3 Screen Formulas: W = H x 4/3 H = W x 3/4 Screen Diagonal = W x 5/4 Projection Formulas: B = 0.266W C = 1.813W-0.919 D = 0.108W α = tan¯¹ (B/C) www.necdisplay.com VT49 Page 1 of 6