NEC NP-M311W Quick Start Manual
NEC Display Solutions of America, Inc.
M311W Installation Guide
Ceiling Mounted and Desktop Rev 1.0
Contents
Product Description, Lens Specs, Notes and Formulas Pg 1
Diagrams & Distance Charts
Cabinet Dimensions
Ceiling Mount Dimensions
Input Panel and Control Codes
Product Description
Type: 3 panel LCD projector, Dimensions: 13.4” (W) x 3.9” (H) x 10.2” (D)
M311W 0.59” p-Si TFT w/MLA Weight: 6.6 lbs
Resolution: 1280 x 800
Fan Noise: M311W: 35 dB / 28dB @ 1 meter Brightness: M311W - 3100 Lumens
Power Consumption: M311W: 311W (max) BTU’s: M311W – 1061.18 BTU/hour
Lens Specifications
Throw Ratio: 1.3 – 2.2:1 (for 100” diagonal) Focal Length: 17.5mm – 29.0mm
Offset Angle: M311W: 6.6° - 10.9° (for 100” diagonal) F/#: 1.7 - 2.1
Screen Sizes: 25” - 300” diagonal (16:10) 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 a 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: 16:10 Screen Formulas:
W = Image Width W = H x 16/10
H = Image Height (size) H = W x 10/16
B = Vertical distance between lens center and screen center Screen Diagonal = W x 18.868/4
C = Throw distance
D = Vertical distance between lens center and screen top
(screen bottom for desktop application)
Projection Formulas:
B = 0.2578W
C (wide) = 1.361W – 1.68
C (tele) = 2.26W – 1.68
D = -0.055W
α (wide) = tan¯¹ (B/C(wide))
α (tele) = tan¯¹ (B/C(tele))
Pg 2
Pg 3-4
Pg 5
Pg 6
www.necdisplay.com M311W Page 1 of 6
NEC Display Solutions of America, Inc.
M311W Installation Guide
Ceiling Mounted and Desktop Rev 1.0
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
4.56"
5.17"
Lens Offset From
Mount Pipe
2.79
Desktop
2.22"
Distance Chart for popular 16:10 screens
Note:
For screen sizes not indicated on the projection
tables, use the formulas on page 1.
www.necdisplay.com M311W Page 2 of 6
Screen Size (16:10)
Diagonal Width(W) Height (H)
inches inches inches inches
57 48 30 12 64 - 107 11.0 - 6.6
66 56 35 14 75 - 125 11.0 - 6.6
68 58 36 15 77 - 128 11.0 - 6.6
75 64 40 16 85 - 143 10.9 - 6.6
79 67 42 17 90 - 150 10.9 - 6.6
85 72 45 19 96 - 161 10.9 - 6.6
92 78 49 20 105 - 176 10.9 - 6.6
98 83 52 21 112 - 186 10.9 - 6.6
102 86 54 22 116 - 194 10.9 - 6.6
111 94 59 24 127 - 212 10.9 - 6.6
113 96 60 25 129 - 215 10.9 - 6.6
123 104 65 27 140 - 233 10.9 - 6.6
125 106 66 27 142 - 237 10.8 - 6.6
147 125 78 32 168 - 280 10.8 - 6.5
149 126 79 33 170 - 284 10.8 - 6.5
213 181 113 47 244 - 407 10.8 - 6.5
255 216 135 56 292 - 486 10.8 - 6.5
C
Throw Distance
C
Throw Distance
B
C
w ide - tele
inches
D
inches
-3
-3
-3
-4
-4
-4
-4
-5
-5
-5
-5
-6
-6
-7
-7
-10
-12
Screen Top
D
Lens Ctr
B
Screen Ctr
Screen Ctr
B
Lens Ctr
D
Screen Bottom
α
w ide - tele
degrees
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