NEC LT100 - MultiSync XGA DLP Projector Installation and user guide

Visual Systems Division
Technical Bulletin
MultiSyncLT100 Installation Data
Desk Top and Ceiling Mount
Page1
Contents
Notes and Formulas Page 1
Projection Distances and Screen Sizes
Ceiling Mount Page 2
Desktop Setup Page 3
Cabinet Dimensions Page 4
Ceiling Mount Dimensions Page 5
Notes
§For Screen Sizes of 24 to 300 inches not indicated on the projection tables, use the formulas below.
§Set the projection distance based on the width of the screen.
§If the figures on the tables do not match the figures in the formulas, use the figures in the table.
§All dimensions are in inches. Multiply by 25.4 for millimeters.
§Distances may vary +/- 5%.
Formulas
Units: Inches
A= C / COS α
B= 3.7H / 25.4
C (WIDE) = (H x 2.026) – 2.437
C (TELE) = C (WIDE) x 1.3
αα = TAN -1 ((W x 0.375) + B) / C
H= Screen Width
Screen Width (H) = Screen Diagonal (4:3) x 4 / 5
Screen Height = Screen Diagonal (4:3) x 3 / 5
A= Distance between lens center and screen center
B= Vertical distance between lens center and screen bottom (screen top for ceiling mount)
C= Horizontal throw distance between screen surface and projector lens
αα = Offset Angle of image path center line with reference to desktop or ceiling

Visual Systems Division
Technical Bulletin
MultiSyncLT100 Installation Data
Desk Top and Ceiling Mount
Page2
Projection Distance and Screen Size for Ceiling Mount
The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of
installation.
Ceiling Mount System
α
B
A
Screen Center
Screen Top
C
8.20"
5.85" Deluxe Mount
1.63"
Horizontal
Lens
Offset
Distance Chart
Screen Size AB C αα
Diagonal Width wide - tele wide - tele wide - tele
40" 32" 65.2" - 84.4" 4.7" 63.0" - 82.7" 14.8° - 11.4°
60" 48" 97.8" - 126.5" 7.0" 94.5" - 124.0" 14.8° - 11.4°
67" 53.6" 109.8" - 140.8" 7.8" 106.2" - 138.0" 14.8° - 11.4°
72" 57.6" 118.2" - 151.5" 8.4" 114.3" - 148.5" 14.7° - 11.4°
84" 67.2" 138.2" - 177.3" 9.8" 133.7" - 173.8" 14.7° - 11.4°
90" 72" 148.3" - 190.8" 10.5" 143.5" - 187.1" 14.6° - 11.3°
100" 80" 164.8" - 212.8" 11.7" 159.4" - 208.7" 14.6° - 11.3°
120" 96" 198.5" - 255.2" 14.0" 192.1" - 250.3" 14.6° - 11.3°
150" 120" 248.7" - 319.6" 17.5" 240.7" - 313.4" 14.6° - 11.3°
180" 144" 298.9" - 384.0" 21.0" 289.3" - 376.6" 14.5° - 11.3°
210" 168" 349.0" - 448.0" 24.5" 337.9" - 439.3" 14.5° - 11.3°
240" 192" 399.2" - 512.7" 28.0" 386.5" - 502.9" 14.5° - 11.2°
270" 216" 449.4" - 577.2" 31.5" 435.1" - 566.1" 14.5° - 11.2°
300" 240" 500.2" - No Tele 35.0" 484.3" - No Tele 14.5° - No Tele
Note:
For screen sizes of 24 to 300 inches not indicated on the projection tables, use the formulas on page 1.

Visual Systems Division
Technical Bulletin
MultiSyncLT100 Installation Data
Desk Top and Ceiling Mount
Page3
Projection Distance and Screen Size for Desktop
The following diagram shows the relationship between projector position and the screen.
Desktop System
α
B
C
A
Screen Center
Desk Top Level
Screen Bottom
3.80"
Distance Chart
Screen Size AB C αα
Diagonal Width wide - tele wide - tele wide - tele
40" 32" 65.2" - 84.4" 4.7" 63.0" - 82.7" 14.8° - 11.4°
60" 48" 97.8" - 126.5" 7.0" 94.5" - 124.0" 14.8° - 11.4°
67" 53.6" 109.8" - 140.8" 7.8" 106.2" - 138.0" 14.8° - 11.4°
72" 57.6" 118.2" - 151.5" 8.4" 114.3" - 148.5" 14.7° - 11.4°
84" 67.2" 138.2" - 177.3" 9.8" 133.7" - 173.8" 14.7° - 11.4°
90" 72" 148.3" - 190.8" 10.5" 143.5" - 187.1" 14.6° - 11.3°
100" 80" 164.8" - 212.8" 11.7" 159.4" - 208.7" 14.6° - 11.3°
120" 96" 198.5" - 255.2" 14.0" 192.1" - 250.3" 14.6° - 11.3°
150" 120" 248.7" - 319.6" 17.5" 240.7" - 313.4" 14.6° - 11.3°
180" 144" 298.9" - 384.0" 21.0" 289.3" - 376.6" 14.5° - 11.3°
210" 168" 349.0" - 448.0" 24.5" 337.9" - 439.3" 14.5° - 11.3°
240" 192" 399.2" - 512.7" 28.0" 386.5" - 502.9" 14.5° - 11.2°
270" 216" 449.4" - 577.2" 31.5" 435.1" - 566.1" 14.5° - 11.2°
300" 240" 500.2" - No Tele 35.0" 484.3" - No Tele 14.5° - No Tele
Note:
For screen sizes of 24 to 300 inches not indicated on the projection tables, use the formulas on page 1.

Visual Systems Division
Technical Bulletin
MultiSyncLT100 Installation Data
Desk Top and Ceiling Mount
Page4
Cabinet Dimensions
The following drawings show the cabinet dimensions for the MultiSync LT100.
Dimensions are in inches. For millimeters multiply by 25.4.

Visual Systems Division
Technical Bulletin
MultiSyncLT100 Installation Data
Desk Top and Ceiling Mount
Page5
Ceiling Mount Dimensions
The following drawings show the dimensions for the MultiSync LT100 Deluxe Ceiling Mount.
Dimensions are in inches. For millimeters multiply by 25.4.