NEC VT491 Manuel utilisateur

NEC Display Solutions of America, Inc.

VT491/590/595 Installation Guide

Ceiling Mounted and Desktop Rev 1.3

www.necdisplay.com VT491/590/595 Page 1 of 6

Contents

Product Description, Lens Specs, Notes and Formulas Pg 1

Diagrams & Distance Charts Pg 2

Cabinet Dimensions Pg 3-4

Ceiling Mount Dimensions Pg 5

Input Panel and Control Codes Pg 6

Product Description

Type: 3 panel LCD projector, Brightness: VT491: 2000 ANSI Lumens

0.6” p-Si TFT w/MLA VT590/VT595: 2000 ANSI Lumens

Resolution: VT491: 800 x 600

VT590/VT595: 1024x768 Fan Noise: 34 dB / 29dB @ 1 meter

Dimensions: 12.1” (W) x 4.4” (H) x 10.2” (D) Weight: 6.17 lbs

Power Consumption: 255W (max) BTU’s: 870 BTU/hour

Lens Specifications

Throw Ratio: 1.5 – 1.8:1 (for 100” diagonal) Focal Length: 18.9mm – 22.7mm

Offset Angle: 8.3° - 10.0° (for 100” diagonal) F/#: 1.7 - 2.07

Screen Sizes: 25” - 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: 4:3 Screen Formulas:

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= 0.266W

C(wide) = 1.525W – 1.176

C (tele) = 1.828W – 1.173

D= 0.108W

α(wide) = tan¯¹ (B/C(wide))

α(tele) = tan¯¹ (B/C(tele))

NEC Display Solutions of America, Inc.

VT491/590/595 Installation Guide

Ceiling Mounted and Desktop Rev 1.3

www.necdisplay.com VT491/590/595 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

Lens Ctr

Screen Ctr

Throw Distance

Screen Top

5.26"

5.68"

Lens Offset From

Mount Pipe

3.27"

Desktop

Lens Ctr

Screen Ctr

Throw Distance

Screen Bottom 2.57"

Distance Chart for popular 4:3 screens 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 15 -6

84 67.2 50.4 18 -7

90 72 54 19 -8

100 80 60 21 -9

120 96 72 26 -10

150 120 90 32 -13

180 144 108 38 -16

200 160 120 43 -17

250 200 150 53 -22

300 240 180 64 -26

wide - tele

Dα

wide - tele

inches degrees

35 - 43 10.2 - 8.5

72 - 87 10.1 - 8.4

87 - 104 10.0 - 8.4

101 - 122 10.0 - 8.4

109 - 130 10.0 - 8.4

121 - 145 10.0 - 8.3

145 - 174 10.0 - 8.3

182 - 218 10.0 - 8.3

218 - 262 10.0 - 8.3

365 - 438 9.9 - 8.3

243 - 291 10.0 - 8.3

304 - 364 9.9 - 8.3

Note: For screen sizes not indicated on the projection

tables, use the formulas on page 1.

NEC Display Solutions of America, Inc.

VT491/590/595 Installation Guide

Ceiling Mounted and Desktop Rev 1.3

www.necdisplay.com VT491/590/595 Page 3 of 6

Cabinet Dimensions

The following drawings show the cabinet dimensions.

Dimensions are in inches. For millimeters multiply by 25.4.

SELECT

ENTER

EXIT

ON/STAND BY SOURCE AUTO ADJ.

POWER

STATUS

LAMP

480

PUSH

10.17

12.07

0.10

2.57

2.22

3.27

4.45

Ventilation

4.76

2.78

2.29

7.41

0.07

2.26

Zoom Lever

Focus lever

Ventilation

NEC Display Solutions of America, Inc.

VT491/590/595 Installation Guide

Ceiling Mounted and Desktop Rev 1.3

www.necdisplay.com VT491/590/595 Page 4 of 6

Cabinet Dimensions (continued)

The following drawings show the cabinet dimensions.

Dimensions are in inches. For millimeters multiply by 25.4.

for Ceiling mount kit

3 - M4*8 Max

Rear Foot

Front Foot

Lens Center

4.76

4.40

6.57

5.75

0.83

7.59

7.72

1.48

1.28 (Lens Top)

7.32

0.63

0.07

0.75

0.51

1.54 1.73

Lamp

Intake

S-VIDEO

VIDEO IN AUDIO IN

PC CONTROL

MONITOR OUT

AUDIO IN COMPUTER1 IN

AUDIO OUT

AC IN@`

COMPUTER2(DVI-I) IN

VT595

S-VIDEO

VIDEO IN AUDIO IN

PC CONTROL MONITOR OUT COMPUTER IN

AC IN@`

VT490/590

NEC Display Solutions of America, Inc.

VT491/590/595 Installation Guide

Ceiling Mounted and Desktop Rev 1.3

www.necdisplay.com VT491/590/595 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 Display Solutions of America, Inc.

VT491/590/595 Installation Guide

Ceiling Mounted and Desktop Rev 1.3

www.necdisplay.com VT491/590/595 Page 6 of 6

Input Panel

S-VIDEO

VIDEO IN AUDIO IN

PC CONTROL

MONITOR OUT

AUDIO IN COMPUTER1 IN

AUDIO OUT

COMPUTER2(DVI-I) IN

VT595

S-VIDEO

VIDEO IN AUDIO IN

PC CONTROL MONITOR OUT COMPUTER IN

VT490 / VT590

PC Control Codes

Function CodeData

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

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

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

INPUTSELECTVIDEO 02H 03H 00H 00H 02H 01H 06H 0EH

INPUTSELECTS-VIDEO 02H 03H 00H 00H 02H 01H 0BH 13H

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

PICTUREMUTEON 02H 10H 00H 00H 00H 12H

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

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

SOUNDMUTEOFF 02H 13H 00H 00H 00H 15H

PROJECTOR INFORMATION REQUEST 00H BFH 00H 00H 01H 02H C2H

ERROR STATUS REQUEST 00H 88H 00H 00H 00H 88H

INFORMATION REQUEST 03H 8AH 00H 00H 00H 8DH

Note: Contact your NEC rep for codes not listed.

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

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.

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