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Visual Systems Division
Technical Bulletin
MultiSync VT440/540 Installation Data
Desktop and Ceiling Mount
Contents
Lens Specs, Notes and Formulas
Projection Distances and Screen Sizes
Desktop Setup
Ceiling Mount Installation
Cabinet Dimensions
Top, Backt and Left Side
Bottom, Front and Right Side
Quick Release Ceiling Mount Dimensions
Timing Chart
PC Control Codes
Lens Specifications
Manual Zoom, Manual Focus
Screen Sizes:
Throw Ratio:
Offset Angle:
Notes
§
For Screen Sizes of 25 to 300 inches not indicated on the projection tables, use the formulas below.
§
If the figures on the tables do not match the figures in the formulas, use the figures in the table.
§
The ceiling must be strong enough to support the LCD projector and the installation must be in accordance with any local
building codes.
All calculations using Screen Diagonal are based on 4:3 aspect ratio.
Distances are in inches, for millimeters multiply by 25.4.
Distances may vary 5%.
Formulas
Units: Inches
(for millimeters multiply final number by 25.4)
D = Screen Diagonal (4:3)
H = D x 0.8
V = D x 0.6
M = 1.25H / 0.92205
C (Wide) = 1.4516M – 1.715
C (Tele) = C (Wide) x 1.2
E = 0.2165M + 2.476
D = 0.0571M – 2.476
B = 0.2165M
F = 0.0571M
-1
(Wide) = tan
(B / C (wide))
-1
(Tele) = tan
(B / C (tele))
Rev. 1.5
Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
F2.0 – 2.3
f = 35.8 – 43.0 mm
25" - 300" diagonal
Full Wide: 1.90 – 1.96 (see charts)
Full Wide: 9.01 - 8.72 (see charts)
H = Screen Width (4:3)
V = Screen Height (4:3)
M = Projection magnification
C = Horizontal throw distance
E = Vertical distance between projector feet and screen center
D = Vertical distance between projector feet and screen bottom
B = Vertical distance between lens center and screen center
F = Vertical distance between lens center and screen top
= Throw angle
Full Tele: 2.28 - 2.35 (see charts)
Full Tele:
7.53 - 7.28 (see charts)
Page 1
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Summary of Contents for NEC VT440K
- Page 1 If the figures on the tables do not match the figures in the formulas, use the figures in the table. § The ceiling must be strong enough to support the LCD projector and the installation must be in accordance with any local building codes.
- Page 2 Rev. 1.5 Projection Distance and Screen Size for Desktop The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of installation. Distances are in inches. For millimeters multiply by 25.4.
- Page 3 Desktop and Ceiling Mount Rev. 1.5 Projection Distance and Screen Size for Ceiling Mount Installation The following diagram shows the relationship between projector position and the screen. Distances are in inches. For millimeters multiply by 25.4. Ceiling Mount Installation Screen Top...
- Page 4 Visual Systems Division Technical Bulletin MultiSync VT440/540 Installation Data Desktop and Ceiling Mount Rev. 1.5 Cabinet Dimensions The following diagrams show the cabinet dimensions for the MultiSync VT440/540. Dimensions are in inches. For millimeters multiply by 25.4. 9.57 Page 4...
- Page 5 Visual Systems Division Technical Bulletin MultiSync VT440/540 Installation Data Desktop and Ceiling Mount Rev. 1.5 Cabinet Dimensions (continued) The following diagrams show the cabinet dimensions for the MultiSync VT440/540. Dimensions are in inches. For millimeters multiply by 25.4. 0.53 7.40 0.35 0.079 1.31...
- Page 6 Visual Systems Division Technical Bulletin MultiSync VT440/540 Installation Data Desktop and Ceiling Mount Rev. 1.5 Quick Release Ceiling Mount Dimensions (Model #: VT40CM) The following diagrams show the quick release ceiling mount dimensions for the MultiSync VT440/540. Dimensions are in inches. For millimeters multiply by 25.4. 8.00 3.75 4.00...
- Page 7 Visual Systems Division Technical Bulletin MultiSync VT440/540 Installation Data Desktop and Ceiling Mount Rev. 1.5 Timing Chart Signal Resolution ( Dots ) NTSC 640 x 480 768 x 576 SECAM 768 x 576 VESA 640 x 480 640 x 480 640 x 480 640 x 480 640 x 480...
- Page 8 One bit X on/off: None Communications: Full duplex PC Control Connector (DIN-8P) To GND of PC NOTE: Pins 2, 3, 5, 6 and 8 are used inside the projector. Code Data To RxD of PC To TxD of PC Page 8...