Page 1
NEC
V s
Solutions (America), Inc.
isual System
GT950 Installation Guide
Desktop and Ceiling Mounted
Contents
Product Description, Lens Specs, Notes and Formulas Page 1
Projection Distances and Screen Sizes
Ceiling Mount Installation
Desktop Setup
Lens Shift Adjustable Range
Cabinet Dimensions
Top, Front and Left Side
Bottom, Back and Right Side
Ceiling Mount Dimensions
Top, Front and Right Side
Bottom, Back and Left Side
Control Codes
Product Description
Type: 3 panel LCD projector, 0.9” p-Si TFT w/MLA Dimensions: 14.25”(W) x 6.62”(H) x 12.72”(D)
Native Resolution: 1024 x 768 Weight: 15.9 lbs
Brightness: 2000 ANSI Lumens Power Lens Shift/Power Zoom/Power Focus
Lens Specifications
Standard Lens Throw Ratio: 2.0 - 2.4:1(approx.) Focal Length: 36.7mm – 44.0mm
Screen Sizes: 25”-300” F/#: 2.0 – 2.6
Optional Lens
GT35-9ZL Throw Ratio: 3.4 - 5.1:1(approx.) Focal Length: 64.1 - 96.1mm
Screen Sizes: 40” - 300” F/#: 2.5 - 3.2
Note: This lens is not user changeable and must be installed by an authorized service center.
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 LCD 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
units: inches (for millimeters multiply final number by 25.4)
Definitions: H = Horizontal Screen Width (4:3)
V = Vertical Screen Height (4:3)
C = Throw distance
Projection Formulas:
Std Lens: C(Wide) = 1.9833H – 1.949 ------ C(Tele) = C(Wide) x 1.2 H = Screen Diagonal x 4/5
V = Screen Diagonal x 3/5
Screen Diagonal = H x 5/4
Optional Lens
GT35-9ZL: C(Wide) = 3.4596H – 3.996 ------ C(Tele) = C(Wide) x1.5
Warning: To avoid premature lamp failure, do not tilt the front of the GT950 up or down by more than 10
Screen Formulas:
v4.0
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
Page 9
°
from level.
www.necvisualsystems.com Page 1 of 9
Page 2
NEC Solutions (America), Inc.
Visual Systems
GT950 Installation Guide
Desktop and Ceiling Mounted v4.0
Ceiling Mounted Installation
The following diagram shows 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.
Throw Distance
5.99"
Vertical Offset
Screen Ctr
6.95" (8.09" for Opt.
GT35-9ZL Lens)
Lens Centered
with Mount
Distance Chart
Screen Size
Diagonal Width(H) Height (V)
inches inches inches
25 20 15 NA - 45.3
40 32 24 61.5 - 73.8 NA - 160.1
60 48 36 93.2 - 111.9 162.1 - 243.1
67 53.6 40.2 104.4 - 125.2 181.4 - 272.2
72 57.6 43.2 112.3 - 134.7 195.3 - 292.9
84 67.2 50.4 131.3 - 157.6 228.5 - 342.7
90 72 54 140.8 - 169.0 245.1 - 367.6
100 80 60 156.7 - 188.1 272.8 - 409.2
120 96 72 188.4 - 226.1 328.1 - 492.2
150 120 90 236.0 - 283.3 411.2 - 616.7
180 144 108 283.6 - 340.4 494.2 - 741.3
210 168 126 331.2 - 397.5 577.2 - NA
240 192 144 378.8 - 454.6 660.2 - NA
270 216 162 426.4 - NA 743.3 - NA
300 240 180 474.0 - NA 826.3 - NA
Note: For screen sizes not indicated on the chart, use the formulas on page 1.
Note: Optional GT35-9ZL lens is not user changeable and must be installed by an authorized service center.
Warning: To avoid premature lamp failure, do not tilt the front of the GT950 up or down by more than 10° from level.
(4:3)
Std Lens
2.0 - 2.4:1
inches
Throw Distance
GT35-9ZL(option lens)
3.4 - 5.1:1
inches
NA
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Page 3
NEC Solutions (America), Inc.
Visual Systems
GT950 Installation Guide
Desktop and Ceiling Mounted v4.0
Desktop Setup
The following diagram shows 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.
Throw Distance
Screen Ctr
3.5"
Distance Chart
Screen Size
Diagonal Width(H) Height (V)
inches inches inches
25 20 15 NA - 45.3
40 32 24 61.5 - 73.8 NA - 160.1
60 48 36 93.2 - 111.9 162.1 - 243.1
67 53.6 40.2 104.4 - 125.2 181.4 - 272.2
72 57.6 43.2 112.3 - 134.7 195.3 - 292.9
84 67.2 50.4 131.3 - 157.6 228.5 - 342.7
90 72 54 140.8 - 169.0 245.1 - 367.6
100 80 60 156.7 - 188.1 272.8 - 409.2
120 96 72 188.4 - 226.1 328.1 - 492.2
150 120 90 236.0 - 283.3 411.2 - 616.7
180 144 108 283.6 - 340.4 494.2 - 741.3
210 168 126 331.2 - 397.5 577.2 - NA
240 192 144 378.8 - 454.6 660.2 - NA
270 216 162 426.4 - NA 743.3 - NA
300 240 180 474.0 - NA 826.3 - NA
Note: For screen sizes not indicated on the chart, use the formulas on page 1.
Note: Optional GT35-9ZL lens is not user changeable and must be installed by an authorized service center.
Warning: To avoid premature lamp failure, do not tilt the front of the GT950 up or down by more than 10
(4:3)
Std Lens
2.0 - 2.4:1
inches
Throw Distance
GT35-9ZL(option lens)
3.4 - 5.1:1
inches
NA
°
from level.
www.necvisualsystems.com Page 3 of 9
Page 4
NEC Solutions (America), Inc.
Visual Systems
GT950 Installation Guide
Desktop and Ceiling Mounted v4.0
Lens Shift Adjustable Range
Lens Shift Range for Desktop and Ceiling Mount
Application
The diagram below shows the location of the image position
in the lens. The lens can be shifted within the shaded area as
Desktop/Front
Vertical
Ceiling/Front
Vertical
0.85V
Normal Position
Normal Position
shown using the normal projection position as a starting
point.
Maximum Possible Range:
Up: 0.85V Right: 0.55H
Down: 0.85V Left: 0.55H
(H: width of projected image, V: height of projected image)
Note: If lens is shifted in two directions combined, maximum
range in either direction cannot be obtained due to rounded off
area near edge of lens. (example: shift up and left)
See diagram below.
0.85V
0.85V
0.55H
Normal projection position
0.55H
Portrait
Horizontal
0.55H
Normal Position
0.85V
Normal projection position
0.85V
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0.85V
0.55H
0.55H
Page 5
NEC Solutions (America), Inc.
Visual Systems
GT950 Installation Guide
Desktop and Ceiling Mounted
Cabinet Dimensions
The following drawings show the cabinet dimensions for the GT950.
Dimensions are in inches. For millimeters multiply by 25.4.
GT950 with Optional GT35-9ZL Lens
3.268Ø
v4.0
6
9
4
.
3
2
2
6
.
6.417
6
0
3
1
.
3
1.142
5.669
12.717
6.811
14.252
R
1
7
.
6
5
3
3.465
4
5
8
.
2
7.441
2
1
0
.
3
R1.575
0.039
6.732
14.252
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R1.575
Page 6
NEC Solutions (America), Inc.
Visual Systems
GT950 Installation Guide
Desktop and Ceiling Mounted
Cabinet Dimensions (continued)
The following drawings show the cabinet dimensions for the GT950.
Dimensions are in inches. For millimeters multiply by 25.4.
v4.0
10.945
MAX M4*10
1.063
5.512
6.417
0.039
GT950 with Optional GT35-9ZL Lens
3.268
Ø
1.142
1
7
5
.
7
0
2
1
1
8
.
3
5
5
.
7
0
5
1
.
7
3
1
9
.
1
1.783
1.260
5.669
Ø
0.413
0
Ø
Ø
0.413
3
1
4
.
6.654
7.6383.622
11.969
10.685
Ø
0.413
7
2
1
8
.
3
5
5
.
7
5
2
4
.
1
4.618
10.630
2.638
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1.319
Page 7
NEC Solutions (America), Inc.
Visual Systems
GT950 Installation Guide
Desktop and Ceiling Mounted
Optional Ceiling Mount Dimensions (Model #: GT95CM)
The following drawings show ceiling mount dimensions for the GT950.
Dimensions are in inches. For millimeters multiply by 25.4.
8.5
0
v4.0
1.5" NPT
2
1
0
.
0
2
9
.
7
9
.
9
3.6
8
TOP
0
6
.
2
FRONT
LEFT
Mount Weight: 4.0 lbs
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2
9
.
2
Page 8
NEC Solutions (America), Inc.
Visual Systems
GT950 Installation Guide
Desktop and Ceiling Mounted
Optional Ceiling Mount Dimensions (Model #: GT95CM) (continued)
The following drawings show ceiling mount dimensions for the GT950.
Dimensions are in inches. For millimeters multiply by 25.4.
v4.0
BOTTOM
BACK
RIGHT
Mount Weight: 4.0 lbs
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Page 9
NEC Solutions (America), Inc.
Visual Systems
GT950 Installation Guide
Desktop and Ceiling Mounted v4.0
Control Codes
Function Code Data
POWER ON 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
INPUT SELECT DVI (DIGITAL) 02H 03H 00H 00H 02H 01H 1AH 22H
INPUT SELECT DVI (ANALOG) 02H 03H 00H 00H 02H 01H 02H 0AH
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
NOTE: Contact your NEC rep for codes not listed.
Cable Connection
Communication Protocol:
Baud Rate: 38400 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 (DIN-8P)
To RxD of PC
678
345
12
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.
www.necvisualsystems.com Page 9 of 9
To TxD of PC
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