NEC VT45 Guide d'installation et d'utilisation
Visual Systems
VT45 Installation Data
Desktop and Ceiling Mount
Rev 1.3
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
Lens Shift Adjustable Range Page 4
Cabinet Dimensions
Top, Front and Right View Page 5
Bottom, Back and Left View Page 6
Ceiling Mount Dimensions
Top, Front Left and Bottom View Page 7
PC Control Codes Page 8
Product Description
Type: 3 panel, 0.7” p-Si TFT LCD projector Dimensions: 11.8”(W) x 3.5”(H) x 8.1”(D)
Native Resolution: 800 x 600 Weight: 5.6 lbs
Brightness: 1000 ANSI Lumens Manual Lens Shift/Manual Zoom/Manual Focus
Lens Specifications
Throw Ratio: 1.82 - 2.01:1 Focal Length: 26.6mm – 29.3mm
Screen Sizes: 25”-300” F/#: 2.0 – 2.2
Distortion: 0.7%TVDist. MTF(@40lp/mm Gr): Ctr>60% Crnr>50%
Chrom.Aberration:Max8micron
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)
D = Screen Diagonal (4:3)
H=Dx0.8 H= Screen Width (4:3)
V=Dx0.6 V= Screen Height (4:3)
C= Throw distance
C(Wide) = 1.8487H – 1.237
C(Tele) = 2.0349H – 1.298
Visual Systems
VT45 Installation Data
Desktop and Ceiling Mount Rev 1.3
Page 2
Projection Distance and Screen Size for Ceiling Mount
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 Mount Installation
Throw Distance
Vertical Offset
Screen Ctr
4.42"
5.78"
2.96" Lens Offset from
Mounting Pipe
VT
45
Distance Chart
Diagonal Width (W) Height (V) wide - tele
25" 20" 15" 36 - 39"
40" 32" 24" 58" - 64"
60" 48" 36" 87" - 96"
67" 53.6" 40.2" 98" - 108"
72" 57.6" 43.2" 105" - 116"
84" 67.2" 50.4" 123" - 135"
90" 72" 54" 132" - 145"
100" 80" 60" 147" - 161"
120" 96" 72" 176" - 194"
150" 120" 90" 220" - 243"
180" 144" 108" 265" - 292"
210" 168" 126" 309" - 341"
240" 192" 144" 354" - 389"
270" 216" 162" 398" - 438"
300" 240" 180" 443" - 487"
Screen Size (4:3) Throw Distance
Note: For screen sizes not indicated on the projection tables, use the formulas on page 1.
Visual Systems
VT45 Installation Data
Desktop and Ceiling Mount Rev 1.3
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
Vertical Offset
Screen Ctr
1.76"
Throw Distance
Distance Chart
Diagonal Width (W) Height (V) wide - tele
25" 20" 15" 36 - 39"
40" 32" 24" 58" - 64"
60" 48" 36" 87" - 96"
67" 53.6" 40.2" 98" - 108"
72" 57.6" 43.2" 105" - 116"
84" 67.2" 50.4" 123" - 135"
90" 72" 54" 132" - 145"
100" 80" 60" 147" - 161"
120" 96" 72" 176" - 194"
150" 120" 90" 220" - 243"
180" 144" 108" 265" - 292"
210" 168" 126" 309" - 341"
240" 192" 144" 354" - 389"
270" 216" 162" 398" - 438"
300" 240" 180" 443" - 487"
Screen Size (4:3) Throw Distance
Note: For screen sizes not indicated on the projection tables, use the formulas on page 1.
Visual Systems
VT45 Installation Data
Desktop and Ceiling Mount Rev 1.3
Page 4
Normal Projection Position
The normal projection position for the VT45 is with vertical lens
shift approximately halfway between Zero Degree Projection
Position and Maximum Vertical Offset Projection Position.
See diagrams below.
Lens Shift Adjustable Range
Normal Position
Desktop/Front
Vertical
0.25V
0.25V
0.25V
Normal Position
Ceiling/Front
Vertical
0.25V
Horizontal
Normal Position
0.33H
Lens Shift Range for Desktop and Ceiling
Mount Application
The diagrams below show the location of the image position in
the lens. The lens can be shifted within the shaded area as
shown using the normal projection position as a starting point.
Note: Maximum range in certain directions might not be
obtainable due to the rounded off area near the edge of lens.
See diagrams below.
Desktop
Maximum Possible Range
Up: 0.25V Left: 0.33H
Down: 0.25V Right: 0.33H
(H: width of image, V: height of image)
0.33H0.33H
0.25V
0.25V
Normal Projection Position
Max. Offset Projection Position
Zero Degree Projection Position
Adjustable Range
Ceiling Mount
Maximum Possible Range
Up: 0.25V Left: 0.33H
Down: 0.25V Right: 0.33H
(H: width of image, V: height of image)
0.33H 0.33H
0.25V
0.25V
Max. Offset Projection Position
Normal Projection Position
Zero Degree Projection Position
Adjustable Range
Visual Systems
VT45 Installation Data
Desktop and Ceiling Mount
11.772
8.150
3.150
3.543
3.346
0.197
0.945
4.606
0.181 0.181
3.071
1.5590.213
Ø 1.850
R0.866(AROUND)
R0.866(AROUND)
Rev 1.3
Page 5
Cabinet Dimensions
The following diagrams show the cabinet dimensions for the VT45.
Dimensions are in inches. For millimeters multiply by 25.4.
VT
45
AC IN`
MENU
ENTER
CANCEL
+
-SELECT
SOURCEAUTOADJUST
STATUS
POWER
ON/STANDBY
PC CONTROL
VIDEO@
IN
AUDIO
R IN
OUT
S-VIDEO
IN
IN
L/MONO
IN
RGB OUT
RGB IN
Visual Systems
VT45 Installation Data
Desktop and Ceiling Mount
10.039
1.909
7.835
2.4214.941
M4,Depth 8mm
(For Rear Foot&
Ceiling Mount)
M4,Depth 8mm
(For Ceiling Mount)
M4,Depth 8mm
(For Rear Foot&
Ceiling Mount)
2.835
2.933
0.472
0.787
2-Ø0.551 2.205
Rev 1.3
Page 6
Cabinet Dimensions (continued)
The following diagrams show the cabinet dimensions for the VT45.
Dimensions are in inches. For millimeters multiply by 25.4.
Visual Systems
VT45 Installation Data
Desktop and Ceiling Mount
4.218
10.960
5.825
Rev 1.3
Page 7
Optional Ceiling Mount Dimensions (Model #: VT45CM)
The following diagrams show ceiling mount dimensions for the VT45.
Dimensions are in inches. For millimeters multiply by 25.4.
Visual Systems
VT45 Installation Data
Desktop and Ceiling Mount Rev 1.3
Page 8
PC Control Codes
Function Code Data
POWERON 02H 00H 00H 00H 00H 02H
POWER OFF 02H 01H 00H 00H 00H 03H
INPUT SELECT RGB 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
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
Cable Connection
Communication Protocol:
Baud Rate: 19200 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
PC Control Connector (D-Sub 9P)
To RxD of PC
12
345
678
To TxD of PC
To GND of PC
NOTE:Pins 2, 3, 5, 6 and 8 are used inside the projector.
Jumper “Request to send” and “Clear to Send” together on both ends of the cable to simplify cable connection.
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4
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1
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