Nec VT540K, VT440K installation data
Visual Systems Division
Technical Bulletin
MultiSync VT440/540 Installation Data
Desktop and Ceiling Mount Rev. 1.5
Contents
Lens Specs, Notes and Formulas Page 1
Projection Distances and Screen Sizes
Desktop Setup Page 2
Ceiling Mount Installation Page 3
Cabinet Dimensions
Top, Backt and Left Side Page 4
Bottom, Front and Right Side Page 5
Quick Release Ceiling Mount Dimensions Page 6
Timing Chart Page 7
PC Control Codes Page 8
Lens Specifications
Manual Zoom, Manual Focus F2.0 – 2.3 f = 35.8 – 43.0 mm
Screen Sizes: 25" - 300" diagonal
Throw Ratio: Full Wide: 1.90 – 1.96 (see charts) Full Tele: 2.28 - 2.35 (see charts)
Offset Angle: Full Wide: 9.01 - 8.72 (see charts) Full Tele: 7.53 - 7.28 (see charts)
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 H = Screen Width (4:3)
V = D x 0.6 V = Screen Height (4:3)
M = 1.25H / 0.92205 M = Projection magnification
C (Wide) = 1.4516M – 1.715 C = Horizontal throw distance
C (Tele) = C (Wide) x 1.2
E = 0.2165M + 2.476 E = Vertical distance between projector feet and screen center
D = 0.0571M – 2.476 D = Vertical distance between projector feet and screen bottom
B = 0.2165M B = Vertical distance between lens center and screen center
F = 0.0571M F = Vertical distance between lens center and screen top
αα (Wide) = tan
αα (Tele) = tan
-1
(B / C (wide)) αα = Throw angle
-1
(B / C (tele))
Page 1
Visual Systems Division
Technical Bulletin
MultiSync VT440/540 Installation Data
Desktop and Ceiling Mount 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.
Desktop Setup
Screen Top
C
Screen Ctr
E
Throw Distance
α
PJ Feet
Scrn Bottom
D
Distance Chart
Screen Size
Diagonal Width Height wide - tele wide - tele
40" 32" 24" 61.3" - 73.5" 8.93° - 7.46° 12.1" 0.1"
60" 48" 36" 92.7" - 111.3" 8.85° - 7.39° 16.9" 1.3"
67" 53.6" 40.2" 103.8" - 124.5" 8.83° - 7.38° 18.6" 1.8"
72" 57.6" 43.2" 111.6" - 134.0" 8.82° - 7.37° 19.8" 2.1"
84" 67.2" 50.4" 130.5" - 156.6" 8.80° - 7.35° 22.7" 2.9"
90" 72" 54" 140.0" - 168.0" 8.79° - 7.35° 24.1" 3.2"
100" 80" 60" 155.7" - 186.9" 8.78° - 7.34° 26.5" 3.9"
120" 96" 72" 187.2" - 224.6" 8.77° - 7.32° 31.3" 5.1"
150" 120" 90" 234.4" - 281.3" 8.75° - 7.31° 38.6" 7.1"
180" 144" 108" 281.7" - 338.0" 8.74° - 7.30° 45.8" 9.0"
210" 168" 126" 328.9" - 394.7" 8.73° - 7.30° 53.0" 10.9"
240" 192" 144" 376.1" - 451.4" 8.73° - 7.29° 60.2" 12.8"
270" 216" 162" 423.4" - 508.0" 8.72° - 7.29° 67.4" 14.7"
300" 240" 180" 470.6" - 564.7" 8.72° - 7.28° 74.6" 16.6"
C αα E D
Note:
For screen sizes of 25 to 300 inches not indicated on the projection tables, use the formulas on page 1.
Projector Feet
Page 2
Visual Systems Division
Technical Bulletin
MultiSync VT440/540 Installation Data
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
5.27"
Screen Top
Lens Ctr
Screen Ctr
Scrn Bottom
F
B
Throw Distance
C
Distance Chart
Screen Size
Diagonal Width Height wide - tele wide - tele
40" 32" 24" 61.3" - 73.5" 8.93° - 7.46° 9.6" 2.5"
60" 48" 36" 92.7" - 111.3" 8.85° - 7.39° 14.4" 3.8"
67" 53.6" 40.2" 103.8" - 124.5" 8.83° - 7.38° 16.1" 4.3"
72" 57.6" 43.2" 111.6" - 134.0" 8.82° - 7.37° 17.3" 4.6"
84" 67.2" 50.4" 130.5" - 156.6" 8.80° - 7.35° 20.2" 5.3"
90" 72" 54" 140.0" - 168.0" 8.79° - 7.35° 21.7" 5.7"
100" 80" 60" 155.7" - 186.9" 8.78° - 7.34° 24.1" 6.3"
120" 96" 72" 187.2" - 224.6" 8.77° - 7.32° 28.9" 7.6"
150" 120" 90" 234.4" - 281.3" 8.75° - 7.31° 36.1" 9.5"
180" 144" 108" 281.7" - 338.0" 8.74° - 7.30° 43.3" 11.4"
210" 168" 126" 328.9" - 394.7" 8.73° - 7.30° 50.5" 13.3"
240" 192" 144" 376.1" - 451.4" 8.73° - 7.29° 57.7" 15.2"
270" 216" 162" 423.4" - 508.0" 8.72° - 7.29° 65.0" 17.1"
300" 240" 180" 470.6" - 564.7" 8.72° - 7.28° 72.2" 19.0"
C αα B F
Note:
For screen sizes of 25 to 300 inches not indicated on the projection tables, use the formulas on page 1.
5.52"
α
Lens Offset from
Mounting Pipe
1.3"
Page 3
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