NEC IW77, WTIW77 Installation Manual

NEC Display Solutions of America, Inc.

WTIW77™ Installation Guide

v1.1

Contents

Product Description, Lens Specs, Notes and Formulas Page 1
Diagrams and Distance Charts

Wall Mounted Side View Installation
Wall Mounted Front View Installation

Whiteboard Dimensions
Front Page 4
Back and Left Side

Cabinet Dimensions
Front, Top, Mirror Opened and Mirror Closed
Back, Right Side and Bottom
Optional Wall Mount Dimensions
Control Codes

Product Description

Type: Whiteboard Dimensions: 62.0”(W) x 78.0”(H) x 30.9”(D)
1 chip DMD
Native Resolution: 1024 x 768 (1024x576 for 16:9 screens) Screen Range: 77” Diagonal ( 4:3)
Brightness: 2000 lumens

TM

Lens-less projector Weight: 92.1 lbs

Screen/Aspect Ratio_

Both 4:3 and 16:9 screens are fully supported with proper aspect ratio control for both type sources using NEC developed
scaling technology. By selecting the screen type in the menus, Aspect Ratio control is reconfigured for that screen type.

Notes

• For screen sizes not indicated on the projection charts, 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 4:3 aspect ratio.

• Distances are i n inches, for millimeters multiply by 25.4.

• Distances ma y vary ±5%.

Formulas

The Projection Formulas use the image width for calculation. Image width is the same for all aspect ratios, only vertical image size
varies. For proper projector placement, determine the image width for a desired screen size. Use the Screen Formulas below to
calculate all screen dimensions. Plug the screen width in for “W” in the Projection Formulas.
Refer to the diagrams and charts for popular screen sizes on page 2 and 3.

Definitions:
W = Screen width W = H x 4/3
H = Screen height H = W x 3/4
B = Vertical distance between projector foot and screen center Screen Diagonal = W x 5/4
C = Throw distance
D = Vertical distance between projector foot and screen bottom

(screen top for ceiling mounted application) 16:9 Screen Formulas:
W = H x 16/9
H = W x 9/16

Projection Formulas:
B = 0.6882W + 3.935
C = 0.4874W - 13.056
D(4:3) = 0.3132W + 3.935
D(16:9) = 0.407W + 3.935

Vertical Position for a 16:9 screen: The Vertical Position adjustment moves the 16:9 image up and down in the unused portion of
the 4:3 DLP panel. This adjustment is only available when the projector is set for 16:9 in the “Screen” menu. The range of Vertical
Position is dependent on aspect ratio and 3D Reform used. If 3D Reform is not used, the approximate range of vertical position is
+/-0.167H (H=Screen Height) when using a 16:9 screen. (See “Screen Type” and “Position” in user ma nual)

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4:3 Screen Formulas:

Screen Diagonal = W x 18.358/16

Page 2
Page 3

Page 5

Page 6

Page 7
Page 8

Page 9

NEC Display Solutions of America, Inc.

WTIW77™ Installation Guide

v1.1

Wall Mounted Installation

The following diagram shows the relationship between pr ojector position and the screen. Refer to the charts below for data.
Distances are in inches. For millimeters multiply by 25.4.

WTIW77 Installation

Distance chart for popular 4:3 screen sizes

Distance chart for popular 16:9 screen sizes

Note: For screen sizes not indicated in the distance charts, use the formulas on page 1.

17.00

23.20

Image Size ( 4: 3)

Diagonal Width (W) Height (H)

inches inches inches inches inches inches

B C D (4:3)

77 61.6 46.2 46.3 17.0 23.2

46.30

Image Size ( 16: 9)

Diagonal Width (W) Height (H)

B C D (16:9)

inches inches inches inches inches inches

71 61.6 30.0 46.3 17.0 29.0

Vertical Position for a 16:9 screen: The Vertical Position adjustment moves the 16:9 i m age
up and down in the unused portion of the 4:3 DLP panel. This adjustment is only available when
the projector is set for 16:9 in the “Screen” menu. The range of Vertical Position is dependent
on aspect ratio and 3D Reform used. If 3D Reform is not used, the approximate range of
vertical position is +/-0.167H (H=Screen Height) when using a 16:9 screen. (See “Screen Type”
and “Position” in user manual)

www.necdisplay.com WTIW77 Page 2 of 10

NEC Display Solutions of America, Inc.

WTIW77™ Installation Guide

v1.1

Wall Mounted Installation cont.

The following diagram shows the relationship between pr ojector position and the screen. Refer to the charts below for data.
Distances are in inches. For millimeters multiply by 25.4.

21.57

20.83

24.60

32.97

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