NEC LCDMT850 Installation Data
NEC LCDMT850 is a versatile LCD projector that offers exceptional image quality and flexible installation options. With its 1700 ANSI Lumens brightness and 3-panel, 1.3” p-Si TFT LCD technology, the NEC LCDMT850 delivers sharp, vibrant images even in well-lit environments. The optional MT13ZL Zoom Lens (1.3 – 1.6:1) provides a wide range of throw distances and screen sizes, making it suitable for a variety of applications, from small meeting rooms to large auditoriums.
The NEC LCDMT850 features a comprehensive range of input options, including RGB, video, S-video, and PC card, making it easy to connect to a variety of sources. The projector also includes a built-in 10W speaker, providing clear and powerful audio without the need for external speakers.
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Visual Systems Division
Technical Bulletin
MT850 Installation Data with Optional MT13ZL Zoom Lens (1.3 – 1.6:1)
Rev. 1.6
Contents
Product Description, Lens Specs, Notes and Formulas Page 1
Projection Distances and Screen Sizes
Ceiling Mount Installation Page 2
Desktop Setup Page 3
Cabinet Dimensions
Top, Front and Right Side Page 4
Bottom, Back and Left Side Page 5
Ceiling Mount Dimensions Page 6
Timing Chart Page 7
PC Control Codes Page 8
Product Description
Type: 3 panel, 1.3” p-Si TFT LCD projector Dimensions: 11.1”(W) x 4.8”(H) x 16.8”(D) ( w/lens installed)
Native Resolution: 800 x 600 Weight: 17.4 lbs (w/lens installed)
Brightness: 1700 ANSI Lumens
Lens Specifications
MT13ZL Zoom Lens
Throw Ratio: 1.24 – 1.30:1(Wide) / 1.54 – 1.60:1(Tele) Screen Sizes: 40 – 300” Diagonal
Offset Angle: 13.9
°
– 14.6
°
(Wide) / 11.4
°
– 11.8
°
(Tele) Distortion: 0.7% TV Distortion
Focal Length: 35 – 43mm MTF ( @ 30 lp/mm Green): Ctr >65% Corner >40%
F/#: 2.3 – 2.8 AR Coated: Multi-Layer Coated
Focus Adjustment: Manual Focus/Manual Zoom Chromatic Aberration: Max 10
µ m
Notes
§ For Screen Sizes of 40 to 200 inches 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 = D x 0.8 H = Screen Width (4:3)
V = D x 0.6 V = Screen Height (4:3)
M = 0.96212H M = Projection magnification
B = 0.3346M B = Vertical distance between lens center and screen center
C (Wide) = 1.3623M – 2.325 C = Throw distance
C (Tele) = 1.6756M – 2.325
D = 0.0585M D = Vertical distance between lens center and top of screen (bottom of screen for desktop application)
α
(wide) = tan
-1
(B/C(wide))
α
= Throw angle
α
(tele) = tan
-1
(B/C(tele))
Page 1
Visual Systems Division
Technical Bulletin
MT850 Installation Data with Optional MT13ZL Zoom Lens (1.3 – 1.6:1)
Rev. 1.6
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
9.3"
5.8" Screen Top
Lens Ctr
D
B
Screen Ctr
C
Throw Distance
α
Lens Offset from
Mounting Pipe
AC IN •@
Scrn Bottom
1.7"
Distance Chart
Diagonal
40"
60"
67"
72"
84"
90"
100"
120"
150"
Screen Size
Width
32"
48"
53.6"
57.6"
67.2"
72"
80"
96"
120"
Height
24"
36"
40.2"
43.2"
50.4"
54"
60"
72"
90"
B
10.3"
15.4"
17.2"
18.5"
21.6"
23.2"
25.7"
30.9"
38.6"
C wide - tele
39.6" - 49.2"
60.6" - 75.0"
67.9" - 84.0"
73.1" - 90.5"
85.7" - 106.0"
92.0" - 113.7"
102.5" - 126.6"
123.4" - 152.4"
154.9" - 191.0"
D
1.7"
2.6"
2.9"
3.1"
3.6"
3.8"
4.3"
5.1"
6.4"
α wide - tele
14.6° - 11.8°
14.3° - 11.6°
14.3° - 11.6°
14.2° - 11.6°
14.2° - 11.5°
14.1° - 11.5°
14.1° - 11.5°
14.1° - 11.5°
14.0° - 11.4°
180" 144" 108" 46.3" 186.3" - 229.7"
Note:
For screen sizes of 40 to 200 inches not indicated on the projection tables, use the formulas on page 1.
7.7" 14.0° - 11.4°
Page 2
Visual Systems Division
Technical Bulletin
MT850 Installation Data with Optional MT13ZL Zoom Lens (1.3 – 1.6:1)
Rev. 1.6
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
Screen Top
Screen Ctr
B
Lens Ctr
Scrn Bottom
D
C
Throw Distance
2.89"
α
Projector Foot
Distance Chart
Diagonal
40"
60"
67"
72"
84"
90"
100"
120"
150"
Screen Size
Width
32"
48"
53.6"
57.6"
67.2"
72"
80"
96"
120"
Height
24"
36"
40.2"
43.2"
50.4"
54"
60"
72"
90"
B
10.3"
15.4"
17.2"
18.5"
21.6"
23.2"
25.7"
30.9"
38.6"
C wide - tele
39.6" - 49.2"
60.6" - 75.0"
67.9" - 84.0"
73.1" - 90.5"
85.7" - 106.0"
92.0" - 113.7"
102.5" - 126.6"
123.4" - 152.4"
154.9" - 191.0"
D
180" 144" 108" 46.3" 186.3" - 229.7"
Note:
For screen sizes of 40 to 200 inches not indicated on the projection tables, use the formulas on page 1.
7.7"
1.7"
2.6"
2.9"
3.1"
3.6"
3.8"
4.3"
5.1"
6.4"
α wide - tele
14.6° - 11.8°
14.3° - 11.6°
14.3° - 11.6°
14.2° - 11.6°
14.2° - 11.5°
14.1° - 11.5°
14.1° - 11.5°
14.1° - 11.5°
14.0° - 11.4°
14.0° - 11.4°
Page 3
Visual Systems Division
Technical Bulletin
MT850 Installation Data with Optional MT13ZL Zoom Lens (1.3 – 1.6:1)
Rev. 1.6
Cabinet Dimensions
The following diagrams show the cabinet dimensions for the MT850 with optional MT13ZL lens.
Dimensions are in inches. For millimeters multiply by 25.4.
4.90
11.06
ON/STAND BY
AUTO ADJUST
CANCEL
+
• £
SELECT
•£
R
T E
E N
MENU
SOURCE
POWER
STATUS
NEC
4.98
Ø4.17
10.27
1.56
AC IN • @• `
Page 4
Visual Systems Division
Technical Bulletin
MT850 Installation Data with Optional MT13ZL Zoom Lens (1.3 – 1.6:1)
Rev. 1.6
Cabinet Dimensions (continued)
The following diagrams show the cabinet dimensions for the MT850 with optional MT13ZL lens.
Dimensions are in inches. For millimeters multiply by 25.4.
4.90
9.49
0.787
(4) 4M x 10mm
5.36
2.36
2.36
3.98
Page 5
Visual Systems Division
Technical Bulletin
MT850 Installation Data with Optional MT13ZL Zoom Lens (1.3 – 1.6:1)
Rev. 1.6
Ceiling Mount Dimensions (Model #: MTCM)
The following diagrams show ceiling mount dimensions for the MT850/1050/1055.
Dimensions are in inches. For millimeters multiply by 25.4.
.450
34°
TYP
68°
TYP
TYP
22°
3.14 2.69
1.88
∅ .41 TYP
∅ .34 TYP
∅ 1.94
4.08
5.93 5.59
4X ∅ .188
1.87
4.15
.265
3.99
4.29
4.41
.35
3.0
5° UP
15° DOWN
Page 6
Visual Systems Division
Technical Bulletin
MT850 Installation Data with Optional MT13ZL Zoom Lens (1.3 – 1.6:1)
Rev. 1.6
Timing Chart
Y / N Signal Resolution
(Dots )
Frequency H.
( kHz )
Refresh Rate
( Hz )
Dot Clock
( MHz )
Y
Y
Y
Y
NTSC
PAL
SECAM
VESA
640 x 480
768 x 576
768 x 576
640 x 480
15.734
15.625
15.625
31.47
60
50
50
59.94
–
–
–
25.175
#Y
##Y
##Y
##Y
##Y
##Y
##Y
##Y
Y
#Y
#Y
#Y
#Y
#Y
#Y
#Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
##Y
##Y
##Y
##Y
##Y
##Y
##Y
##Y
##Y
##Y
##Y
##Y
VESA
MAC
VESA
VESA
VESA
IBM
MAC
VESA
VESA
VESA
MAC
SUN
SGI
VESA
SGI
VESA
IBM
MAC
MAC
MAC
VESA
VESA
IBM
VESA
IBM
VESA
IBM
IBM
VESA
VESA
VESA
VESA
MAC
MAC
HP
SUN
1280 x 1024
1280 x 1024
1280 x 1024
1280 x 1024
VESA
VESA
1280 x 1024
1280 x 1024
HDTV (1080i)(1125i) 1920 x 1080
HDTV (720p)(750p) 1280 x 720
SDTV (480p)(525p) 720 x 483
SDTV (480i)(525i) 720 x 480
VESA
VESA
1600 x 1200
1600 x 1200
800 x 600
832 x 624
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1152 x 864
1152 x 870
1152 x 900
1152 x 900
1280 x 960
1280 x 1024
1280 x 1024
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
720 x 350
720 x 400
720 x 350
720 x 400
800 x 600
800 x 600
800 x 600
800 x 600
53.674
49.725
35.5
48.363
57.476
58.131
60.241
60.023
68.677
67.5
68.681
61.796
71.736
60
63.9
63.981
31.47
31.47
34.97
35 66.
37.86
37.5
39.375
43.269
31.469
37.927
39.44
39.375
35.16
37.879
48.077
46.88
64.31
69.9
78.125
81.13
79.976
91.146
33.75
45
31.47
15.73
75.0
81.3
85.06
74.55
43 Interlace
60
70.07
72.03
74.93
75.03
85
75
75.06
65.95
76.05
60
60
60.02
60 25.
60 25.
66.67
67 30.
72.81
75
75
85.01
70.09
85.04
87.85
87.7
56.25
60.32
72.19
75
60.38
65.2
72.01
76.11
75.03
85.02
60 Interlace
60 Progressive
107
118.5
135
135
135
157.5
74.25
74.25
59.94 Progressive 27
59.9 Interlace –
60
65
162
175.5
56.25
57.283
44.9
65
75
79
80
78.75
94.5
108
100
92.94
105.6
108
107.35
108
175
175
31.334
24
31.5
31.5
31.49
36
28.322
35.5
35.5
35.5
36
40
50
49.5
##Y VESA 1600 x 1200 87.5 70 189
##Y VESA 1600 x 1200 93.75 75 202.5
#Y: Images in above flagged with # and Y are compressed with Advanced AccuBlend on MT850 only.
##Y: Images in above flagged with ## and Y are compressed with Advanced AccuBlend on MT1055/MT1050 and MT850.
NOTE1: Some composite sync signals may not be displayed correctly.
NOTE2: Signals other than those specified in the table above may not be displayed correctly. If this should happen, change the refresh rate or resolution on your PC.
Refer to Display Properties help section of your PC for procedures.
NOTE3: UXGA can be supported for separate sync signal only.
Page 7
Visual Systems Division
Technical Bulletin
MT850 Installation Data with Optional MT13ZL Zoom Lens (1.3 – 1.6:1)
Rev. 1.6
PC Control Codes
Function Code Data
POWER ON 02H 00H 00H 00H 00H 02H
POWER OFF 02H 01H 00H 00H 00H 03H
INPUT SELECT RGB1 02H 03H 00H 00H 02H 01H 01H 09H
INPUT SELECT RGB2 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
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
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
PC Control Connector (DIN-8P)
To RxD of PC
5
8
2
7
4
6
3
1
To GND of PC To TxD of PC
NOTE: Pins 2, 3, 5, 6 and 8 are used inside the projector.
Page 8
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