User manual NEC LT140THRO
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Manual abstract: user guide NEC LT140THRO
Detailed instructions for use are in the User's Guide.
[. . . ] [. . . ] If the figures on the tables do not match the figures in the formulas, use the figures in the table. Distances may vary +/- 5%.
Formulas
Units: Inches
A = C / COS B = 3. 7H / 25. 4 C (WIDE) = (2. 0099 x H) 1. 9927 C (TELE) = (2. 4119 x H) 2. 0365 D = E/2 E =H/4x3 = TAN
-1
H = Screen Diagonal (4:3) x 4 / 5 H = Screen Width
((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 = Offset Angle of image path center line with reference to desktop or ceiling
Page1
Visual Systems Division Technical Bulletin
MultiSync® LT140 Installation Data
Desktop and Ceiling Mount
Projection Distance and Screen Size for Desktop
The following diagram shows the relationship between projector position and the screen.
Desktop
C
Screen
Screen Center
E
A
D
P CR C AD USB ACCESS PC CONTROLRGB INPUT VIDEO ·¥ MOUSE OUT S-VIDEO AUDIO ·¥ ·¥ L(MONO) R
B 1. 99"
Screen Bottom
Distance Chart
Screen Size
Diagonal 40" 60" 67" 72" 84" 90" 100" 120" 150" 180" 210" 240" 270" 300" Width (H) 32" 48" 53. 6" 57. 6" 67. 2" 72" 80" 96" 120" 144" 168" 192" 216" 240" Height (E) 24" 36" 40. 2" 43. 2" 50. 4" 54" 60" 72" 90" 108" 126" 144" 162" 180"
A
wide - tele 64. 4" - 77. 0" 97. 7" - 116. 5" 109. 3" - 130. 2" 117. 7" - 140. 2" 137. 6" - 163. 7" 147. 5" - 175. 6" 164. 1" - 195. 4" 197. 3" - 234. 9" 247. 4" - 294. 1" 297. 0" - 353. 3" 346. 9" - 412. 5" 396. 7" - 471. 6" 446. 5" - 530. 9" 496. 3" - No Tele
B
C
wide - tele
wide - tele 15. 0° - 12. 5° 14. 8° - 12. 4° 14. 8° - 12. 4° 14. 8° - 12. 4° 14. 7° - 12. 3° 14. 7° - 12. 3° 14. 7° - 12. 3° 14. 7° - 12. 3° 14. 6° - 12. 3° 14. 6° - 12. 2° 14. 6° - 12. 2° 14. 6° - 12. 2° 14. 6° - 12. 2° 14. 6° - No Tele
4. 7" 7. 0" 7. 8" 8. 4" 9. 8" 10. 5" 11. 7" 14. 0" 17. 5" 21. 0" 24. 5" 28. 0" 31. 5" 35. 0"
62. 2" - 75. 2" 94. 5" - 113. 8" 105. 7" - 127. 2" 113. 8" - 136. 9" 133. 1" - 160. 0" 142. 7" - 171. 6" 158. 7" - 190. 9" 190. 9" - 229. 5" 239. 4" - 287. 4" 287. 4" - 345. 3" 335. 7" - 403. 2" 383. 9" - 461. 0" 432. 1" - 518. 9" 480. 3" - No Tele
Note:
For screen sizes of 25 to 300 inches not indicated on the projection tables, use the formulas on page 1.
Page2
Visual Systems Division Technical Bulletin
MultiSync® LT140 Installation Data
Desktop and Ceiling Mount
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
Projector Base
1. 99" B A Screen Top D
E Screen Center C
Screen
Distance Chart
Screen Size
Diagonal 40" 60" 67" 72" 84" 90" 100" 120" 150" 180" 210" 240" 270" 300" Width (H) 32" 48" 53. 6" 57. 6" 67. 2" 72" 80" 96" 120" 144" 168" 192" 216" 240" Height (E) 24" 36" 40. 2" 43. 2" 50. 4" 54" 60" 72" 90" 108" 126" 144" 162" 180"
A
wide - tele 64. 4" - 77. 0" 97. 7" - 116. 5" 109. 3" - 130. 2" 117. 7" - 140. 2" 137. 6" - 163. 7" 147. 5" - 175. 6" 164. 1" - 195. 4" 197. 3" - 234. 9" 247. 4" - 294. 1" 297. 0" - 353. 3" 346. 9" - 412. 5" 396. 7" - 471. 6" 446. 5" - 530. 9" 496. 3" - No Tele
B
C
wide - tele
wide - tele 15. 0° - 12. 5° 14. 8° - 12. 4° 14. 8° - 12. 4° 14. 8° - 12. 4° 14. 7° - 12. 3° 14. 7° - 12. 3° 14. 7° - 12. 3° 14. 7° - 12. 3° 14. 6° - 12. 3° 14. 6° - 12. 2° 14. 6° - 12. 2° 14. 6° - 12. 2° 14. 6° - 12. 2° 14. 6° - No Tele
4. 7" 7. 0" 7. 8" 8. 4" 9. 8" 10. 5" 11. 7" 14. 0" 17. 5" 21. 0" 24. 5" 28. 0" 31. 5" 35. 0"
62. 2" - 75. 2" 94. 5" - 113. 8" 105. 7" - 127. 2" 113. 8" - 136. 9" 133. 1" - 160. 0" 142. 7" - 171. 6" 158. 7" - 190. 9" 190. 9" - 229. 5" 239. 4" - 287. 4" 287. 4" - 345. 3" 335. 7" - 403. 2" 383. 9" - 461. 0" 432. 1" - 518. 9" 480. 3" - No Tele
Note:
For screen sizes of 25 to 300 inches not indicated on the projection tables, use the formulas on page 1.
Page3
Visual Systems Division Technical Bulletin
MultiSync® LT140 Installation Data
Desktop and Ceiling Mount
Cabinet Dimensions
The following drawings show the cabinet dimensions for the MultiSync LT140. For millimeters multiply by 25. 4.
1. 17
11. 57
9. 25 0. 23 2. 1
3. 01
2. 28
0. 51
8. 34
1. 98
, `·@, 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
MultiSync LT 140
, c, k, o
TM
STATUS SOURCE
EN TE R
POWER SELECT MENU
ON/OFF
CA NC EL
USB PC CARD ACCESS
AUTO
PC CONTROL MOUSE OUT ·¥ ·¥ RGB INPUT S-VIDEO ·¥ VIDEO
L(MONO) R
AUDIO
Lens Center
Page4 [. . . ] [. . . ]
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