NEC LT157 - XGA LCD Projector Manuale di installazione e d'uso

Visual Systems

LT157/158 Installation Data

Desktop and Ceiling Mount

C(tele) = 2.4253H – 2.576 Screen Diagonal = H x 5/4

ver1.5

Page 1

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

Product Description

Type: 3 panel, 0.9” p-Si TFT w/MLA LCD projector Dimensions: 8.2”(W) x 11.1”(H) x 2.8”(D)

Native Resolution: 1024 x 768 (LT158 DVI Model) Weight: 4.9 lbs

Brightness: 1500 ANSI Lumens Manual Zoom/Manual Focus

Lens Specifications

Throw Ratio: 2.0 - 2.4:1(approx.) Focal Length: 36.5mm – 43.7mm

Offset Angle: 8.4 °-8.9 (wide)/7.1 °-7.4°(tele) F/#: 1.7 – 2.1

Screen Sizes: 25”-300”

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 LCD 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= 0.2984H H= Screen Diagonal x 4/5

C(wide) = 2.0215H – 2.630 V= Screen Diagonal x 3/5

D= 0.0766H

α(wide) = tan-1 (B/C(wide))

α(tele) = tan-1 (B/C(tele))

Visual Systems

LT157/158 Installation Data

Desktop and Ceiling Mount ver1.5

Page 2

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

Screen Ctr

Screen Top

Lens Ctr

5.5"

Lens Offset from

Mount Pipe

Throw Distance

1.57"

4.75"

Distance Chart

Diagonal Width(H) Height (V)

inches inches inches inches inches

25 20 15 6.0 NA - 45.9 1.5 NA - 7.4

40 32 24 9.5 62.1 - 75.0 2.5 8.7 - 7.3

60 48 36 14.3 94.4 - 113.8 3.7 8.6 - 7.2

67 53.6 40.2 16.0 105.7 - 127.4 4.1 8.6 - 7.2

72 57.6 43.2 17.2 113.8 - 137.1 4.4 8.6 - 7.1

84 67.2 50.4 20.1 133.2 - 160.4 5.1 8.6 - 7.1

90 72 54 21.5 142.9 - 172.0 5.5 8.5 - 7.1

100 80 60 23.9 159.1 - 191.4 6.1 8.5 - 7.1

120 96 72 28.6 191.4 - 230.3 7.4 8.5 - 7.1

150 120 90 35.8 240.0 - 288.5 9.2 8.5 - 7.1

180 144 108 43.0 288.5 - 346.7 11.0 8.5 - 7.1

210 168 126 50.1 337.0 - 404.9 12.9 8.5 - 7.1

240 192 144 57.3 385.5 - 463.1 14.7 8.5 - 7.1

270 216 162 64.5 434.0 - NA 16.5 8.4 - NA

300 240 180 71.6 482.5 - NA 18.4 8.4 - NA

inches

degrees

Screen Size (4:3)

wide - tele

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

Visual Systems

LT157/158 Installation Data

Desktop and Ceiling Mount ver1.5

Page 3

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

Screen Ctr

Scrn Bottom

Lens Ctr

Throw Distance

1.6"

Projector Feet

Distance Chart

Diagonal Width(H) Height (V)

inches inches inches inches inches

25 20 15 6.0 NA - 45.9 1.5 NA - 7.4

40 32 24 9.5 62.1 - 75.0 2.5 8.7 - 7.3

60 48 36 14.3 94.4 - 113.8 3.7 8.6 - 7.2

67 53.6 40.2 16.0 105.7 - 127.4 4.1 8.6 - 7.2

72 57.6 43.2 17.2 113.8 - 137.1 4.4 8.6 - 7.1

84 67.2 50.4 20.1 133.2 - 160.4 5.1 8.6 - 7.1

90 72 54 21.5 142.9 - 172.0 5.5 8.5 - 7.1

100 80 60 23.9 159.1 - 191.4 6.1 8.5 - 7.1

120 96 72 28.6 191.4 - 230.3 7.4 8.5 - 7.1

150 120 90 35.8 240.0 - 288.5 9.2 8.5 - 7.1

180 144 108 43.0 288.5 - 346.7 11.0 8.5 - 7.1

210 168 126 50.1 337.0 - 404.9 12.9 8.5 - 7.1

240 192 144 57.3 385.5 - 463.1 14.7 8.5 - 7.1

270 216 162 64.5 434.0 - NA 16.5 8.4 - NA

300 240 180 71.6 482.5 - NA 18.4 8.4 - NA

inches

degrees

Screen Size (4:3)

wide - tele

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

Visual Systems

LT157/158 Installation Data

Desktop and Ceiling Mount

units: inches

0.776 10.472

8.150

1.587

1.228

1.587

2.480

0.197

ver1.5

Page 4

Cabinet Dimensions

The following diagrams show the cabinet dimensions for the LT157/158.

Dimensions are in inches. For millimeters multiply by 25.4.

LT157

POWER

STATUS

PCCARD

ACCESS

ON/

STANDBY

SOURCE

AUTO

ADJUST

SELECT

|

{

ENTER

CANCEL

Visual Systems

LT157/158 Installation Data

Desktop and Ceiling Mount

M4*8 (Mount)

M4 * 8 (Mount)

units: inches

ver1.5

Page 5

Cabinet Dimensions (continued)

The following diagrams show the cabinet dimensions for the LT157/158.

Dimensions are in inches. For millimeters multiply by 25.4.

PC CARD

USB PC CONTROL

VIDEO S-VIDEO

£ RGB AUDIO

¥

‚j

Visual Systems

LT157/158 Installation Data

Desktop and Ceiling Mount ver1.5

Page 6

Optional Ceiling Mount Dimensions (Model #: LT57CM)

The following diagrams show ceiling mount dimensions for the LT157/158.

Dimensions are in inches. For millimeters multiply by 25.4.

3.973

8.535

2.904

7.670

3.678

1.5" threaded pipe and hardware

recommended by Peerless Industries

@800-729-0307

Visual Systems

LT157/158 Installation Data

Desktop and Ceiling Mount ver1.5

Page 7

PC Control Codes

Function Code Data

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

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

INPUT SELECT DVI (Digital) 02H 03H 00H 00H 02H 01H 1AH 22H (LT158 ONLY)

INPUT SELECT RGB 02H 03H 00H 00H 02H 01H 01H 09H (DVI Analog for LT158)

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

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

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