NEC VT470 Manuel utilisateur

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NEC Solutions (America), Inc.

VisualSystems

VT470/570/575/670/676 Installation Guide

Ceiling Mounted and Desktop v1.5

Contents

Product Description, Lens Specs, Notes and Formulas Pg. 1

Diagrams and Distance Charts Pg. 2

Cabinet Dimensions Pg. 3 - 4

Ceiling Mount Dimensions Pg. 5

Input Panel and Control Codes Pg. 6

ProductDescription

Type: 3 panel LCD projector, Brightness: VT470: 2000 ANSI lumens

0.7” p-Si TFT (VT670 w/MLA) VT570: 1300 ANSI lumens

Resolution: VT470: 800x600 VT575: 1500 ANSI lumens

VT570/575/670/676: 1024x768 VT670: 2100 ANSI lumens

Dimensions: 11.57”(W) x 4.43”(H) x 11.10”(D) VT676: 2500 ANSI lumens

Weight: 6.4 lbs

LensSpecifications

Throw Ratio: 1.5 - 1.8:1(for 100” diagonal) Focal Length: 21.6mm – 25.9mm

Offset Angle: 9.6°-11.5° (for 100” diagonal) F/#: 1.7 – 2.0

Screen Sizes: 21”-300” diagonal (4:3) Manual Zoom / Manual Focus

Notes

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

If a value in a chart does not match the results of the formulas, use the values in the chart.

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

building codes.

All formulas are based on a 4:3 aspect ratio and screen.

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

Distances may vary ±5%.

Formulas

The Projection Formulas use the image width for calculation. Image width is the same for all aspect ratios, only vertical image size

varies. For proper projector placement, determine the image width for a desired screen size. Use the Screen Formulas below to

calculate all screen dimensions. Plug in the image width for “W” in the Projection Formulas.

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

Definitions: 4:3 Screen Formulas:

W= Image Width W=Hx4/3

H= Image Height (Size) H=Wx3/4

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

C=Throwdistance

D= Vertical distance between lens center and screen top (screen

bottomfordesktop)

α=Projectionangle

Projection Formulas:

B= 0.2986W

C(wide) = 1.4813W – 1.425

C(tele) = 1.7913W – 1.406

D= 0.0764W

α(wide) = tan-1 (B/C(wide))

α(tele) = tan-1 (B/C(tele))

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Diagrams and Distance Charts

The following diagrams show the relationship between projector position and the screen. Refer to the chart below for data.

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 chart,

use the formulas on page 1.

Note: “NA” means it is outside lens range for that

part of the zoom. Refer to “Screen Sizes” in Lens

Specifications on Page 1.

Diag W H wide

tele wide

tele

inches inches inches inches inches

21 16.8 12.6 5.0 NA

28.7 1.3 NA

9.9

60 48 36 14.3 69.7

84.6 3.7 11.6

9.6

72 57.6 43.2 17.2 83.9

101.8 4.4 11.6

9.6

84 67.2 50.4 20.1 98.1

119.0 5.1 11.6

9.6

90 72 54 21.5 105.2

127.6 5.5 11.5

9.6

100 80 60 23.9 117.1

141.9 6.1 11.5

9.6

120 96 72 28.7 140.8

170.6 7.3 11.5

9.5

150 120 90 35.8 176.3

213.6 9.2 11.5

9.5

180 144 108 43.0 211.9

256.5 11.0 11.5

9.5

200 160 120 47.8 235.6

285.2 12.2 11.5

9.5

250 200 150 59.7 294.8

356.9 15.3 11.5

9.5

300 240 180 71.7 354.1

428.5 18.3 11.4

9.5

Screen Size (4:3) C

inches

degrees

Throw Distance

Screen Bottom

Screen Ctr

2.5"

Lens Ctr

Screen Top

Screen Ctr

Lens Offset from

Mount Pipe

Lens Ctr

Throw Distance

5.5"

6.1"

2.7"

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Cabinet Dimensions

The following drawings show the cabinet dimensions.

Dimensions are in inches. For millimeters multiply by 25.4.

4.43

4.19

11.57

10.24

2.30

(boss)

2.54

(foot)

4.15

11.10

Exhaust

2.81

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Cabinet Dimensions (continued)

The following drawings show the cabinet dimensions.

Dimensions are in inches. For millimeters multiply by 25.4.

3-M4x8 MAX For Ceiling Mount

For handle (Except VT570)

3.60

7.28

6.852.61

1.83

Lamp

Intake

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Optional Ceiling Mount Dimensions (Model #: VT70CM)

The following drawings show ceiling mount dimensions.

Dimensions are in inches. For millimeters multiply by 25.4.

7.62

2.67

3.24

7.62

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Input Panel

Control Codes

Function Code Data

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

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

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

INPUT SELECT COMPUTER 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

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: PC Control Connector (DIN-8P)

Baud Rate: 19200 bps

Data Length: 8 bits

Parity: No Parity

Stop Bit: One bit

X on/off: None

Communications: Full duplex

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.

To RxD of PC

345

678

To TxD of PCTo GND of PC

AUDIO

S-VIDEO IN L/MONO R AUDIO OUT MONITOR OUT PC CONTROL

VIDEO IN L/MONO R COMPUTER 1 IN AUDIO COMPUTER 2 IN

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