NEC LT380 - MultiSync XGA LCD Projector Manuel utilisateur

NEC Solutions (America), Inc.

Visual Systems Division

LT380 Installation Guide

Ceiling Mounted and Desktop Rev 1.1

www.necvisualsystems.com LT380 Page 1 of 6

Contents

Product Description, Lens Specs, Notes and Formulas Pg 1

Diagrams & Distance Charts Pg 2

Cabinet Dimensions_____________ Pg 3

Ceiling Mount Dimensions _________ Pg 4

Input Panel and Control Codes Pg 5

Product Description

Type: 3 panel LCD projector, Brightness: LT380: 3000 ANSI Lumens

0.79” p-Si TFT w/MLA Dimensions: 12.2”(W) x 10.2”(H) x 4.4”(D)

Resolution: LT380: 1024 x 768 Weight: 6.17 lbs

Lens Specifications

Throw Ratio: 1.5 – 1.8:1 (for 100” diagonal) Focal Length: 24.2mm – 29.0mm

Offset Angle: 8.5° - 11.2° (for 100” diagonal) F/#: 1.7 - 2.0

Screen Sizes: 21” - 300” diagonal (4:3) 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.

•All calculations are based on 4:3 aspect ratio.

•Distances are in inches, for millimeters multiply by 25.4.

•Distances may vary ±5%.

Formulas

The Projection Formulas use the image width for calculation. For proper projection placement, determine the image width

for the desired screen size. Use the Screen Formulas below to calculate all screen dimensions. Plug in the width for “W” in

the Projection Formulas.

Refer to the diagrams and charts for popular screen sizes on page 2:

Definitions: 4:3ScreenFormulas:

W = Image Width W = H x 4/3

H = Image Height (size) H = W x 3/4

B = Vertical distance between lens center and screen center Screen Diagonal = W x 5/4

C = Throw distance

D = Vertical distance between lens center and screen top

(screen bottom for desktop application)

Projection Formulas:

B= 0.270W

C(wide) = 1.491W – 1.823

C(tele)=1.803W – 1.820

D= 0.1063W

α(wide) = tan¯¹ (B/C(wide))

α(tele) = tan¯¹ (B/C(tele))

NEC Solutions (America), Inc.

Visual Systems Division

LT380 Installation Guide

Ceiling Mounted and Desktop Rev 1.1

www.necvisualsystems.com LT380 Page 2 of 6

Diagrams and Distance Charts

The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of

installation.

Distances are in inches. For millimeters multiply by 25.4.

Ceiling Mounted

Desktop

Distance Chart for popular 4:3 screens

Note: For screen sizes not indicated on the projection

tables, use the formulas on page 1.

Screen Size (4:3)

Diag W H

inches inches inches inches inches

30 24 18 6 -3

60 48 36 13 -5

72 57.6 43.2 16 -6

84 67.2 50.4 18 -7

90 72 54 19 -8

100 80 60 22 -9

120 96 72 26 -10

150 120 90 32 -13

180 144 108 39 -15

200 160 120 43 -17

250 200 150 54 -21

300 240 180 65 -25

wide - tele

Dα

wide - tele

inches degrees

33 - 41 9.0 - 11.1

69 - 84 8.7 - 10.6

83 - 102 8.7 - 10.5

98 - 119 8.7 - 10.5

105 - 128 8.6 - 10.5

117 - 142 8.6 - 10.4

141 - 171 8.6 - 10.4

176 - 214 8.6 - 10.4

212 - 257 8.6 - 10.4

356 - 431 8.5 - 10.3

236 - 286 8.6 - 10.3

296 - 359 8.5 - 10.3

Lens Ctr

Screen Ctr

Throw Distance

Screen Bottom 2.54"

Lens Ctr

Screen Ctr

Throw Distance

Screen Top

6.30"

5.65"

Lens Offset From

Mount Pipe

2.62"

NEC Solutions (America), Inc.

Visual Systems Division

LT380 Installation Guide

Ceiling Mounted and Desktop Rev 1.1

www.necvisualsystems.com LT380 Page 3 of 6

Cabinet Dimensions

The following drawings show the cabinet dimensions.

Dimensions are in inches. For millimeters multiply by 25.4.

Lens center

11.39

11.34

2.81

11.57

4.72

2.54 (FOOT)

2.30 (boss)

4.76

0.70 (LENS MAX)

0.78 (LENS MIN)

5.01

1.537.10

ventilation

NEC Solutions (America), Inc.

Visual Systems Division

LT380 Installation Guide

Ceiling Mounted and Desktop Rev 1.1

www.necvisualsystems.com LT380 Page 4 of 6

Cabinet Dimensions (continued)

The following drawings show the cabinet dimensions.

Dimensions are in inches. For millimeters multiply by 25.4.

3 - M4 * 8 max.

Lens center

2.85 6.85

1.83 3.60

7.28

0.98

for Ceiling Mount

Lamp

security slot

ventilation

8.22 1.15

AC input

Power Switch

NEC Solutions (America), Inc.

Visual Systems Division

LT380 Installation Guide

Ceiling Mounted and Desktop Rev 1.1

www.necvisualsystems.com LT380 Page 5 of 6

Optional Ceiling Mount Dimensions (Model #: VL80CM)

The following drawings show the ceiling mount dimensions.

Dimensions are in inches. For millimeters multiply by 25.4.

8.62

2.71

2.99

3.35

8.74

NEC Solutions (America), Inc.

Visual Systems Division

LT380 Installation Guide

Ceiling Mounted and Desktop Rev 1.1

www.necvisualsystems.com LT380 Page 6 of 6

Input Panel

PC Control Codes

Function CodeData

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

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

INPUT SELECT CCOMPUTER 02H 03H 00H 00H 02H 01H 01H 09H

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 DVI (DIGITAL) 02H 03H 00H 00H 02H 01H 1AH 22H

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

Note: Contact your NEC rep for codes not listed.

Cable Connection

Communication Protocol:

Baud Rate: 38400 bps (for cable lengths longer than 20’, it is recommended changing to 9600 bps in setup menu)

Data Length: 8 bits

Parity: No Parity

Stop Bit: One Bit

X on/off: None

Communications: Full duplex

NOTE 1 : Pins 2, 3, 5, and 6 are used inside the projector.

NOTE 2: For long cable runs it is recommended to set communication speed within the projector to 9600 bps.

12345

67 8 9

To GND of PC

To RxD of PC

To TxD of PC

To CTS of PC

To RTS of PC

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