NEC NP-M311X Installation Guide

NEC Display Solutions of America, Inc.

M271X/M311X Installation Guide

Ceiling Mounted and Desktop

Rev 1.0

www.necdisplay.com

M271X, M311X

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,

Dimensions:

13.4” (W) x 3.9” (H) x 10.2” (D)

M271X

0.63” p-Si TFT w/MLA

Weight:

6.4 lbs

M311X:

0.63” p-SI TFT w/MLA

Resolution:

1024 x 768

Fan Noise:

M271X:

33 dB / 26dB @ 1 meter

Brightness:

M271X - 2700 Lumens

M311X:

33 dB / 26dB @ 1 meter

M311X - 3100 Lumens

Power Consumption: M271X:

248W (max)

BTU’s:

M271X - 846.21 BTU/hour

M311X :

248W (max)

M311X - 846.21 BTU/hour

Lens Specifications

Throw Ratio:

1.3 – 2.2:1 (for 100” diagonal)

Focal Length:

17.5mm – 29.0mm

Offset Angle:

M311X: 6.6° - 10.9° (for 100” diagonal)

F/#:

1.7 - 2.1

Screen Sizes:

30” - 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 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:

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

= 0.2578W

C

(wide) = 1.366W – 1.77

C

(tele)

= 2.268W – 1.77

D

= -0.117W

α

(wide) = tan¯¹ (B/C(wide))

α

(tele) = tan¯¹ (B/C(tele))