NEC LT240 Series Manuel utilisateur

NEC Solutions (America), Inc.

VisualSystems

LT240 Installation Guide

Desktop and Ceiling Mount

D= 0.1503H - 0.021

v3.0

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Contents

Product Description, Lens Specs, Notes and Formulas Page 1

Projection Distances and Screen Sizes

Ceiling Mount Installation Page 2

DesktopSetup Page 3

Cabinet Dimensions

Top, Front and Right Side Page 4

Bottom, Back and Left Side Page 5

Ceiling Mount Dimensions Page 6

Control Codes Page 7

ProductDescription

Type: Single chip DMDTM projector Dimensions: 10.24”(W) x 4.74”(H) x 12.56”(D)

Native Resolution: 1024 x 768 (XGA) Weight: 7.1 lbs

Brightness: 1600 ANSI Lumens

Lens Specifications

Throw Ratio: 1.5 - 1.9:1(approx.) Focal Length: 22.4mm – 27.0mm

Offset Angle: 15.8 °-18.8 ° (approx.) F/#: 2.5 – 2.9

Screen Sizes: 30”-500” Manual Focus/Manual Zoom

Notes

 For screen sizes not indicated on the projection tables, use the formulas below.

 If the figures on the tables do not match the results of formulas, use the figures in the table.

 The ceiling must be strong enough to support the projector and the installation must be in accordance with any local

building codes.

• All calculations 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)

Definitions:

H= Horizontal Screen Width (4:3)

V= Vertical Screen Height (4:3)

B= Vertical distance between lens center and screen center

C= Throw distance

D= Vertical distance between lens center and screen top (screen bottom for desktop application)

α= Throw Angle

Projection Formulas: Screen Formulas (4:3):

B= 0.5253H – 0.021 H= Screen Diagonal x 4/5

C(wide) = 1.5607H – 1.751 V= Screen Diagonal x 3/5

C(tele) = 1.8789H – 1.694 Screen Diagonal = H x 5/4

α(wide) = tan-1 (B/C(wide))

α(tele) = tan-1 (B/C(tele))

NEC Solutions (America), Inc.

VisualSystems

LT240 Installation Guide

Desktop and Ceiling Mount v3.0

www.necvisualsystems.com Page 2 of 7

Projection Distance and Screen Size for Ceiling Mount

The following shows the proper relative position of the projector and screen. Refer to the table for installation data.

Distances are in inches. For millimeters multiply by 25.4.

Ceiling Mount Installation

Throw Distance

Screen Top

Screen Ctr

Lens Ctr

2.9"

Lens Offset from

Mount Center

7.6"

*7.2" pipe base

*5.6" flush base

*See page 6 for mount base info

Distance Chart BD

Diagonal Width(H) Height(V) wide - tele wide - tele

inches inches inches inches inches

30 24 18 12.6 35.7 - 43.4 3.6 19.4 - 16.2

40 32 24 16.8 48.2 - 58.4 4.8 19.2 - 16.0

60 48 36 25.2 73.2 - 88.5 7.2 19.0 - 15.9

67 53.6 40.2 28.1 81.9 - 99.0 8.0 19.0 - 15.9

72 57.6 43.2 30.2 88.1 - 106.5 8.6 18.9 - 15.8

84 67.2 50.4 35.3 103.1 - 124.6 10.1 18.9 - 15.8

90 72 54 37.8 110.6 - 133.6 10.8 18.9 - 15.8

100 80 60 42.0 123.1 - 148.6 12.0 18.8 - 15.8

120 96 72 50.4 148.1 - 178.7 14.4 18.8 - 15.8

150 120 90 63.0 185.5 - 223.8 18.0 18.8 - 15.7

180 144 108 75.6 223.0 - 268.9 21.6 18.7 - 15.7

210 168 126 88.2 260.4 314.0 25.2 18.7 15.7

240 192 144 100.8 297.9 359.1 28.8 18.7 15.7

270 216 162 113.4 335.4 404.1 32.4 18.7 15.7

300 240 180 126.1 372.8 449.2 36.1 18.7 15.7

350 280 210 147.1 435.2 524.4 42.1 18.7 15.7

400 320 240 168.1 497.7 599.6 48.1 18.7 15.7

450 360 270 189.1 560.1 674.7 54.1 18.7 15.7

500 400 300 210.1 622.5 - 749.9 60.1 18.6 - 15.7

Screen Size (4:3) C

inches

degrees

Note: For screen sizes not indicated on the projection tables, use the formulas on page 1.

NEC Solutions (America), Inc.

VisualSystems

LT240 Installation Guide

Desktop and Ceiling Mount v3.0

www.necvisualsystems.com Page 3 of 7

Projection Distance and Screen Size for Desktop

The following diagram shows the relationship between projector position and the screen.

Distances are in inches. For millimeters multiply by 25.4.

Desktop Setup

Throw Distance

Screen Bottom

Screen Ctr

Lens Ctr

3.27"

Distance Chart BD

Diagonal Width(H) Height(V) wide - tele wide - tele

inches inches inches inches inches

30 24 18 12.6 35.7 - 43.4 3.6 19.4 - 16.2

40 32 24 16.8 48.2 - 58.4 4.8 19.2 - 16.0

60 48 36 25.2 73.2 - 88.5 7.2 19.0 - 15.9

67 53.6 40.2 28.1 81.9 - 99.0 8.0 19.0 - 15.9

72 57.6 43.2 30.2 88.1 - 106.5 8.6 18.9 - 15.8

84 67.2 50.4 35.3 103.1 - 124.6 10.1 18.9 - 15.8

90 72 54 37.8 110.6 - 133.6 10.8 18.9 - 15.8

100 80 60 42.0 123.1 - 148.6 12.0 18.8 - 15.8

120 96 72 50.4 148.1 - 178.7 14.4 18.8 - 15.8

150 120 90 63.0 185.5 - 223.8 18.0 18.8 - 15.7

180 144 108 75.6 223.0 - 268.9 21.6 18.7 - 15.7

210 168 126 88.2 260.4 314.0 25.2 18.7 15.7

240 192 144 100.8 297.9 359.1 28.8 18.7 15.7

270 216 162 113.4 335.4 404.1 32.4 18.7 15.7

300 240 180 126.1 372.8 449.2 36.1 18.7 15.7

350 280 210 147.1 435.2 524.4 42.1 18.7 15.7

400 320 240 168.1 497.7 599.6 48.1 18.7 15.7

450 360 270 189.1 560.1 674.7 54.1 18.7 15.7

500 400 300 210.1 622.5 - 749.9 60.1 18.6 - 15.7

Screen Size (4:3) C

inches

degrees

Note: For screen sizes not indicated on the projection tables, use the formulas on page 1.

NEC Solutions (America), Inc.

VisualSystems

LT240 Installation Guide

Desktop and Ceiling Mount

VENTILATION

2.756

3.169

4.213

4.724

12.559

10.827

3.268

7.362 1.398

2.303

2.835

3.031

10.236

2.244

3.622

4.094

v3.0

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Cabinet Dimensions

The following diagrams show the cabinet dimensions for the LT240.

Dimensions are in inches. For millimeters multiply by 25.4.

NEC Solutions (America), Inc.

VisualSystems

LT240 Installation Guide

Desktop and Ceiling Mount

FOR CEILING MOUNT

3 - M4x10

VENTILATION

2.559 4.213

1.594

7.283

0.984

8.799

SECURITY SLOT

2.303

v3.0

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Cabinet Dimensions (continued)

The following diagrams show the cabinet dimensions for the LT240.

Dimensions are in inches. For millimeters multiply by 25.4.

NEC Solutions (America), Inc.

VisualSystems

LT240 Installation Guide

Desktop and Ceiling Mount

3.54

8.12

0.59

4.00

4.47

3.75

Cable Management

1.5" NPT

7.52

Threaded Pipe Base

3.50

7.52

3.99

8.12

2.38

0.59

2.84

Flush Base

0.50

1.75

1.99

3.99

v3.0

www.ne Page 6 of 7cvisualsystems.com

Optional Ceiling Mount Dimensions (Model #: LT60CM)

The following diagrams show ceiling mount dimensions for the LT240.

Dimensions are in inches. For millimeters multiply by 25.4.

The LT60CM comes with a threaded pipe base and a flush base for minimal mount height.

NEC Solutions (America), Inc.

VisualSystems

LT240 Installation Guide

Desktop and Ceiling Mount v3.0

www.necvisualsystems.com Page 7 of 7

Control Codes

Function Code Data

POWER ON 02H 00H 00H 00H 00H 02H

POWER OFF 02H 01H 00H 00H 00H 03H

INPUT SELECT RGB 1 02H 03H 00H 00H 02H 01H 01H 09H

INPUT SELECT RGB 2 02H 03H 00H 00H 02H 01H 02H 0AH

INPUT SELECT VIDEO 02H 03H 00H 00H 02H 01H 06H 0EH

INPUT SELECT S-VIDEO 02H 03H 00H 00H 02H 01H 0BH 13H

INPUT SELECT VIEWER 02H 03H 00H 00H 02H 01H 1FH 27H

PICTURE MUTE ON 02H 10H 00H 00H 00H 12H

PICTURE MUTE OFF 02H 11H 00H 00H 00H 13H

SOUND MUTE ON 02H 12H 00H 00H 00H 14H

SOUND MUTE OFF 02H 13H 00H 00H 00H 15H

ON SCREEN MUTE ON 02H 14H 00H 00H 00H 16H

ON SCREEN MUTE OFF 02H 15H 00H 00H 00H 17H

Cable Connection

Communication Protocol:

Baud Rate: 38400 bps

Data Length: 8 bits

Parity: No Parity

Stop Bit: One bit

X on/off: None

Communications: Full duplex

PC Control Connector (DIN-8P)

To RxD of PC

345

678

To TxD of PC

To GND of PC

NOTE 1: It is recommended to set the projector to “Idle Mode” in the Setup menu for best Power ON response.

NOTE 2: Pins 2, 3, 5, 6 and 8 are used inside the projector.

NOTE 3: For long cable runs it is recommended to set communication speed within projector menus to 9600 bps.

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