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NEC MultiSync LT140 Installation and user guide

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Visual Systems Division
Technical Bulletin
MultiSyncLT140 Installation Data
Desktop and Ceiling Mount
Page1
Contents
Notes and Formulas Page 1
Projection Distances and Screen Sizes
Desktop Setup Page 2
Ceiling Mount Page 3
Cabinet Dimensions Page 4
Notes
§For Screen Sizes of 25 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 αH= Screen Diagonal (4:3) x 4 / 5
B= 3.7H / 25.4 H= Screen Width
C (WIDE) = (2.0099 x H) – 1.9927
C (TELE) = (2.4119 x H) – 2.0365
D= E/2
E = H / 4 x 3
αα= TAN -1 ((H x 0.375) + B) / C
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
D = Vertical distance between screen center and screen bottom (screen top for ceiling mount)
E =Screen Height
αα= Offset Angle of image path center line with reference to desktop or ceiling
Visual Systems Division
Technical Bulletin
MultiSyncLT140 Installation Data
Desktop and Ceiling Mount
Page2
Projection Distance and Screen Size for Desktop
The following diagram shows the relationship between projector position and the screen.
Desktop
VIDEOPC CONTROL
L(MONO)R
AUDIORGB INPUTMOUSE OUT•¥ •¥ ACCESSUSB PC CARD
S-VIDEO•¥ 1.99"
B
D
E
C
A
Screen Center
Screen Bottom
Screen
αα
Distance Chart Screen Size A B C αα
Diagonal Width (H) Height (E) wide - tele wide - tele wide - tele
40" 32" 24" 64.4" - 77.0" 4.7" 62.2" - 75.2" 15.0° - 12.5°
60" 48" 36" 97.7" - 116.5" 7.0" 94.5" - 113.8" 14.8° - 12.4°
67" 53.6" 40.2" 109.3" - 130.2" 7.8" 105.7" - 127.2" 14.8° - 12.4°
72" 57.6" 43.2" 117.7" - 140.2" 8.4" 113.8" - 136.9" 14.8° - 12.4°
84" 67.2" 50.4" 137.6" - 163.7" 9.8" 133.1" - 160.0" 14.7° - 12.3°
90" 72" 54" 147.5" - 175.6" 10.5" 142.7" - 171.6" 14.7° - 12.3°
100" 80" 60" 164.1" - 195.4" 11.7" 158.7" - 190.9" 14.7° - 12.3°
120" 96" 72" 197.3" - 234.9" 14.0" 190.9" - 229.5" 14.7° - 12.3°
150" 120" 90" 247.4" - 294.1" 17.5" 239.4" - 287.4" 14.6° - 12.3°
180" 144" 108" 297.0" - 353.3" 21.0" 287.4" - 345.3" 14.6° - 12.2°
210" 168" 126" 346.9" - 412.5" 24.5" 335.7" - 403.2" 14.6° - 12.2°
240" 192" 144" 396.7" - 471.6" 28.0" 383.9" - 461.0" 14.6° - 12.2°
270" 216" 162" 446.5" - 530.9" 31.5" 432.1" - 518.9" 14.6° - 12.2°
300" 240" 180" 496.3" - No Tele 35.0" 480.3" - No Tele 14.6° - No Tele
Note:
For screen sizes of 25 to 300 inches not indicated on the projection tables, use the formulas on page 1.
Visual Systems Division
Technical Bulletin
MultiSyncLT140 Installation Data
Desktop and Ceiling Mount
Page3
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
D
E
A
Screen Center
Screen
B
1.99"
Projector Base
Screen Top
C
Distance Chart Screen Size A B C αα
Diagonal Width (H) Height (E) wide - tele wide - tele wide - tele
40" 32" 24" 64.4" - 77.0" 4.7" 62.2" - 75.2" 15.0° - 12.5°
60" 48" 36" 97.7" - 116.5" 7.0" 94.5" - 113.8" 14.8° - 12.4°
67" 53.6" 40.2" 109.3" - 130.2" 7.8" 105.7" - 127.2" 14.8° - 12.4°
72" 57.6" 43.2" 117.7" - 140.2" 8.4" 113.8" - 136.9" 14.8° - 12.4°
84" 67.2" 50.4" 137.6" - 163.7" 9.8" 133.1" - 160.0" 14.7° - 12.3°
90" 72" 54" 147.5" - 175.6" 10.5" 142.7" - 171.6" 14.7° - 12.3°
100" 80" 60" 164.1" - 195.4" 11.7" 158.7" - 190.9" 14.7° - 12.3°
120" 96" 72" 197.3" - 234.9" 14.0" 190.9" - 229.5" 14.7° - 12.3°
150" 120" 90" 247.4" - 294.1" 17.5" 239.4" - 287.4" 14.6° - 12.3°
180" 144" 108" 297.0" - 353.3" 21.0" 287.4" - 345.3" 14.6° - 12.2°
210" 168" 126" 346.9" - 412.5" 24.5" 335.7" - 403.2" 14.6° - 12.2°
240" 192" 144" 396.7" - 471.6" 28.0" 383.9" - 461.0" 14.6° - 12.2°
270" 216" 162" 446.5" - 530.9" 31.5" 432.1" - 518.9" 14.6° - 12.2°
300" 240" 180" 496.3" - No Tele 35.0" 480.3" - No Tele 14.6° - No Tele
Note:
For screen sizes of 25 to 300 inches not indicated on the projection tables, use the formulas on page 1.
Visual Systems Division
Technical Bulletin
MultiSyncLT140 Installation Data
Desktop and Ceiling Mount
Page4
Cabinet Dimensions
The following drawings show the cabinet dimensions for the MultiSync LT140.
Dimensions are in inches. For millimeters multiply by 25.4.
S-VIDEO
•¥ VIDEO
PC CONTROL
L(MONO) R
AUDIO
RGB INPUT
MOUSE OUT
•¥ •¥
USB
AUTOSOURCE
POWER
STATUS ON/OFF
MENU
ENTER
CANCEL
SELECT
‚`•@‚s‚d‚w‚`‚r•@‚h‚m‚r‚s‚q‚t‚l‚d‚m‚s‚r•@‚s‚d‚b‚g‚m‚n‚k‚n‚f‚x
‚c‚k‚oTM
ACCESS
PC CARD
MultiSync
LT
140
9.25
2.1
Lens Center
1.98
8.34
2.28
3.01
0.230.51 11.57
1.17