User manual NEC LT80THRO

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Manual abstract: user guide NEC LT80THRO

Detailed instructions for use are in the User's Guide.

 [. . . ] Visual Systems Division Technical Bulletin

MultiSync® LT80 Installation Data
Desk Top and Ceiling Mount

Contents
Notes and Formulas Projection Distances and Screen Sizes Ceiling Mount Desktop Setup Cabinet Dimensions Ceiling Mount Dimensions Page 2 Page 3 Page 4 Page 5 Page 1

Notes
§ § § § § For Screen Sizes of 24 to 300 inches not indicated on the projection tables,  use the formulas below.  [. . . ] Distances may vary +/- 5%. 

Formulas
Units: Inches
A = C / COS  B = ((H x 1. 25) ­ 0. 2) x 3 / 25. 4 C (WIDE) = ((H x 12. 5 / 243) ­ 0. 06) x 39. 37 C (TELE) = ((H x 12. 5 / 187) ­ 0. 06) x 39. 37  = TAN
-1

((H x 0. 375) + B) / C

H = Width of screen

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  = Offset Angle of image path center line with reference to desktop or ceiling

Page1

Visual Systems Division Technical Bulletin

MultiSync® LT80 Installation Data
Desk Top 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 System
C 6. 23"

5. 41"

Screen Top

B

A

Screen Center

Horizontal Lens Offset
A TEXAS INSTRAMENTS TECHNOLOGY

1. 25"

Distance Chart
Screen Size
Diagonal 40" 60" 67" 72" 84" 90" 100" 120" 150" 180" 210" 240" 270" 300" Width 32" 48" 53. 6" 57. 6" 67. 2" 72" 80" 96" 120" 144" 168" 192" 216" 240"

A
wide - tele 65. 2 - 84. 4" 97. 7" - 126. 5" 109. 8" - 141. 5" 118. 2" - 152. 2" 138. 2" - 178. 0" 148. 4" - 190. 9" 164. 7" - 212. 8" 198. 5" - 255. 2" 248. 7" - 319. 6" 299. 0" - 384. 0" 349. 2" - 448. 5" 399. 2" - 512. 8" 449. 4" - 577. 3" 500. 2" - No Tele

B
4. 8" 6. 9" 7. 9" 8. 5" 9. 9" 10. 6" 11. 5" 14. 1" 17. 7" 21. 2" 24. 8" 28. 3" 31. 9" 35. 1"

C
wide - tele 63" - 82. 7" 94. 5" - 124. 0" 106. 2" - 138. 7" 114. 3" - 149. 2" 133. 7" - 174. 5" 143. 5" - 187. 1" 159. 4" - 208. 7" 192. 1" - 250. 3" 240. 7" - 313. 4" 289. 3" - 376. 6" 337. 9" - 439. 8" 386. 5" - 502. 9" 435. 1" - 566. 1" 484. 3" - No Tele

wide - tele 14. 9° - 11. 5° 14. 8° - 11. 4° 14. 8° - 11. 4° 14. 8° - 11. 4° 14. 7° - 11. 4° 14. 7° - 11. 4° 14. 6° - 11. 3° 14. 6° - 11. 3° 14. 6° - 11. 3° 14. 6° - 11. 3° 14. 6° - 11. 3° 14. 5° - 11. 3° 14. 5° - 11. 3° 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. 

DLP

WARNUNG HEISS ATTENTION CHAUD CAUTION HOT ·, ·'·^Ó

S-VIDEO

RGB RGB INPUT VIDEO INPUT VIDEO

AUDIO L(MONO) R

MultiSync LT 80

AUDIO

RGB RGB OUTPUT PC CONTROL

AUDIO

Page2

Visual Systems Division Technical Bulletin

MultiSync® LT80 Installation Data
Desk Top and Ceiling Mount

Projection Distance and Screen Size for Desktop
The following diagram shows the relationship between projector position and the screen. 

Desktop System

C Screen Center A Screen Bottom B 
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS·G(1)THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION. THIS CABINET IS CONSTRUCTED OF PLASTIC(ABS). THIS CLASS A DIGITAL APPARATUS MEETS ALL REQUIREMENTS OF THE CANADIAN INTERFERENCE-CAUSING EQUIPMENT REGULATIONS. CET APPAREIL NUMERIQUE DE LA CLASSE A RESPECTE TOUTES LES EXIGENCES DU REGLEMENT SUR LE MATERIEL BROUILLEUR DU CANADA. 

Desk Top Level 3. 33"

Distance Chart
Screen Size
Diagonal 40" 60" 67" 72" 84" 90" 100" 120" 150" 180" 210" 240" 270" 300" Width 32" 48" 53. 6" 57. 6" 67. 2" 72" 80" 96" 120" 144" 168" 192" 216" 240"

A
wide - tele 65. 2 - 84. 4" 97. 7" - 126. 5" 109. 8" - 141. 5" 118. 2" - 152. 2" 138. 2" - 178. 0" 148. 4" - 190. 9" 164. 7" - 212. 8" 198. 5" - 255. 2" 248. 7" - 319. 6" 299. 0" - 384. 0" 349. 2" - 448. 5" 399. 2" - 512. 8" 449. 4" - 577. 3" 500. 2" - No Tele

B
4. 8" 6. 9" 7. 9" 8. 5" 9. 9" 10. 6" 11. 5" 14. 1" 17. 7" 21. 2" 24. 8" 28. 3" 31. 9" 35. 1"

C
wide - tele 63" - 82. 7" 94. 5" - 124. 0" 106. 2" - 138. 7" 114. 3" - 149. 2" 133. 7" - 174. 5" 143. 5" - 187. 1" 159. 4" - 208. 7" 192. 1" - 250. 3" 240. 7" - 313. 4" 289. 3" - 376. 6" 337. 9" - 439. 8" 386. 5" - 502. 9" 435. 1" - 566. 1" 484. 3" - No Tele

wide - tele 14. 9° - 11. 5° 14. 8° - 11. 4° 14. 8° - 11. 4° 14. 8° - 11. 4° 14. 7° - 11. 4° 14. 7° - 11. 4° 14. 6° - 11. 3° 14. 6° - 11. 3° 14. 6° - 11. 3° 14. 6° - 11. 3° 14. 6° - 11. 3° 14. 5° - 11. 3° 14. 5° - 11. 3° 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. 

Page3

Visual Systems Division Technical Bulletin

MultiSync® LT80 Installation Data
Desk Top and Ceiling Mount

Cabinet Dimensions
The following drawings show the cabinet dimensions for the MultiSync LT80. For millimeters multiply by 25. 4. 
12. 78"

. 59"

9. 70" 4. 06"

3. 38"

SELECT

ADJUST

ENTER

MENU

PUSH ON/OFF POWER

2. 52"

STATUS

9. 09"

9. 25"

. 10"

4. 80"

. 67"

3. 86" 1. 14" 10. 28"

2. 46"

. 87"

. 59"

4. 72"

8. 07"

. 59" . 59"

5. 31"

. 41"

Page4

9. 76"

S-VIDEO

RGB RGB INPUT VIDEO INPUT VIDEO

AUDIO L(MONO) R

AUDIO

RGB RGB OUTPUT PC CONTROL

AUDIO

+

-

MultiSync LT 80

Visual Systems Division Technical Bulletin

MultiSync® LT80 Installation Data
Desk Top and Ceiling Mount

Ceiling Mount Dimensions
The following drawings show the dimensions for the MultiSync LT80 Ceiling Mount.  [. . . ] For millimeters multiply by 25. 4. 

66° TYP 24° TYP 33° TYP

Ø 1. 93"

4X SLOTS . 25" x . 5"

8. 41"

Ø . 38" TYP Ø 3. 66" 7. 41" 5. 22" 3. 64" . 47" 5. 79" 5. 52"

. 53" 2. 71" TYP 4. 54" 4X Ø . 406"

. 25"

Top View

2. 75"

5° UP 15° DOWN

Front View

Side View

Page5 [. . . ]

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