NEC VT490 Manual de usuario
NEC Display Solutions of America, Inc.
VT490/590/595 Installation Guide
Ceiling Mounted and Desktop Rev 1.2
www.necdisplay.com VT490/590/595 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: VT490: 2000 ANSI Lumens
0.6” p-Si TFT w/MLA VT590/VT595: 2000 ANSI Lumens
Resolution: VT490: 800 x 600
VT590/VT595: 1024x768 Fan Noise: 34 dB / 29dB @ 1 meter
Dimensions: 12.1”(W) x 10.2”(H) x 4.4”(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.
VT490/590/595 Installation Guide
Ceiling Mounted and Desktop Rev 1.2
www.necdisplay.com VT490/590/595 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
B
C
Lens Ctr
Screen Ctr
Throw Distance
Screen Top
5.26"
5.68"
Lens Offset From
Mount Pipe
3.27"
D
Desktop
B
C
Lens Ctr
Screen Ctr
Throw Distance
Screen Bottom 2.57"
D
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
BC
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.
VT490/590/595 Installation Guide
Ceiling Mounted and Desktop Rev 1.2
www.necdisplay.com VT490/590/595 Page 3 of 6
Cabinet Dimensions
The following drawings show the cabinet dimensions.
Dimensions are in inches. For millimeters multiply by 25.4.
MENU
SELECT
ENTER
EXIT
ON/STAND BY SOURCE AUTO ADJ.
POWER
STATUS
LAMP
VT
480
PUSH
10.17
12.07
0.10
2.57
2.22
3.27
4.45
Ventilation
Ventilation
4.76
2.78
2.29
7.41
0.07
2.26
Zoom Lever
Focus lever
Ventilation
NEC Display Solutions of America, Inc.
VT490/590/595 Installation Guide
Ceiling Mounted and Desktop Rev 1.2
www.necdisplay.com VT490/590/595 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
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
Intake
S-VIDEO
IN
VIDEO IN AUDIO IN
L
R
PC CONTROL
MONITOR OUT
AUDIO IN COMPUTER1 IN
AUDIO OUT
AC IN@`
COMPUTER2(DVI-I) IN
++
VT595
S-VIDEO
IN
VIDEO IN AUDIO IN
L
R
PC CONTROL MONITOR OUT COMPUTER IN
AC IN@`
++
VT490/590
NEC Display Solutions of America, Inc.
VT490/590/595 Installation Guide
Ceiling Mounted and Desktop Rev 1.2
www.necdisplay.com VT490/590/595 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.
VT490/590/595 Installation Guide
Ceiling Mounted and Desktop Rev 1.2
www.necdisplay.com VT490/590/595 Page 6 of 6
Input Panel
S-VIDEO
IN
VIDEO IN AUDIO IN
L
R
PC CONTROL
MONITOR OUT
AUDIO IN COMPUTER1 IN
AUDIO OUT
COMPUTER2(DVI-I) IN
++
VT595
S-VIDEO
IN
VIDEO IN AUDIO IN
L
R
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.
NEC Display Solutions of America, Inc.
VT490/590/595 Installation Guide
Ceiling Mounted and Desktop Rev 1.2
www.necdisplay.com VT490/590/595 Page 7 of 6
NOTE 2: For long cable runs it is recommended to set communication speed within the projector to 9600 bps.
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