NEC NP-UM330X NP04WK1 Installation Manual - Page 8

M Projection Distance and Screen Size The following shows the projection distance and screen size as well as the optimum height of the projector and screen. Refer to the dimensions on the diagram to determine the position of installation, then perform the mounting procedure. CAUTION - When the screen is installed in front of the wall surface, the distance between the projector and the screen will be shorter (the sliding range is reduced). Check before installing. - Be sure to line up the center of the wall adapter with the center of the screen. Wall Screw hole center 189 L2 L1 142 71 Screw hole center 71 Screw hole center Screw hole center H1 Center of wall adapter Center of screen H2 Screen surface The projector's aspect ratio is as shown below. D=16 (W): 10 (H2) screen: Wide type projector D=4 (W): 3 (H2) screen: Standard type projector D D W D ENG-7