NEC Display Solutions of America, Inc.M282X/M322X/M402X Installation GuideCeiling Mounted and Desktop Rev 1.2www.necdisplay.com M282X, M322X, M402X Page 1 of 6ContentsProduct Description, Lens Specs, Notes and Formulas Pg 1Diagrams & Distance Charts Pg 2Cabinet Dimensions Pg 3-4Ceiling Mount Dimensions Pg 5Input Panel and Control Codes Pg 6Product DescriptionType: 1 Chip DLP Projector Dimensions: 14.5” (W) x 4.3” (H) x 11.5” (D)0.55” DMD Weight: 8.0 lbsResolution: 1024 x 768Fan Noise: M282X: 38dB / 29dB @ 1 meter Brightness: M282X - 2800 LumensM322X: 38dB / 30dB @ 1 meter M322X - 3200 LumensM402X : 39dB / 33dB @ 1 meter M402X – 4000 LumensPower Consumption: M282X : 257W (max) BTU’s: M271X - 915 BTU/hourM322X : 286W (max) M311X - 1024 BTU/hourM402X : 335W (max) M402X – 1208 BTU/hourLens SpecificationsThrow Ratio: 1.5 – 2.5:1 (for 100” diagonal) Focal Length: 17.09mm – 29.05mmOffset Angle: 10.6° - 18.2° (for 100” diagonal) F/#: 2.4 - 3.1Screen Sizes: 30” - 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 a 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 = 0.4875W – 0.156C (wide) = 1.545W – 1.976C (tele) = 2.626W – 3.082D = 0.112W + 0.1726α (wide) = tanˉ¹ (B/C(wide))α (tele) = tanˉ¹ (B/C(tele))