NEC LT240 - Manual (Page 23)

E-23
INSTALLATION AND CONNECTIONS
Ͼ
Setting Up the Screen and theProjector
Distance Chart
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and bottom of screen
α
= Throw angle
Lens Center
Throw Angle (
Ͱ
)
Throw Distance (C)
Screen center
Screen Diagonal
Screen Width
Screen Height
Screen Bottom
(B)
(D)
Throw Distance and Screen Size
The following shows the proper relative positions of the projector and screen.
Refer to the table to determine the position of installation.