14 Positioning your projector
Projection dimensions
MX863UST
• The screen aspect ratio is 4:3 and the projected picture is in a 4:3 aspect ratio
Screen size
Minimum
Ceiling height
Ver ti c a l
offset
Installation distance (D)
Diagonal (M) Height (h) Width (W)
H
a
a. Based on an image 762 mm from the floor, if the image is lower, the min ceiling height is reduced by the measurement.
V
X
b
=0 mm
(D=a)
b. Assume the thickness of projection screen(X) is 0 mm.
X
c
=30 mm
(D=a+30 mm)
c. Assume the thickness of projection screen(X) is 30 mm.
Inch mm (mm) (mm) (mm) (mm) (mm) (mm)
73 1854 1113 1483 2401 238 88 118
78 1981 1189 1585 2490 252 118 148
83 2108 1265 1687 2580 265 147 177
88 2235 1341 1788 2670 279 177 207
93 2362 1417 1890 2760 292 207 237
98 2489 1494 1991 2849 306 236 266
100 2540 1524 2032 2885 311 248 278
103 2616 1570 2093 2939 319 266 296
108 2743 1646 2195 3029 333 296 326
110 2794 1676 2235 3065 338 308 338
All measurements are approximate and may vary from the actual sizes.
BenQ recommends that if you intend to permanently install the projector, you should physically test the projection
size and distance using the actual projector in situ before you permanently install it, so as to make allowance for this
projector's optical characteristics. This will help you determine the exact mounting position so that it best suits your
installation location.
M
W
h
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