2. Installation
BenQ HT 480W User’s Guide
11
Floor Installation
Distance :
Projection distance (the distance between the projection lens and the screen. )
Height :
The vertical height of the screen center.
Offset :
The difference in height between the center of the projection lens and the center of the projection image.
(The projector should be installed horizontally.)
1.
Choose the screen width you desire from the chart below, installing the projector at a distance from the screen
between the Minimum and Maximum Distance. (Minimum Distance = 1.61 x Screen Width, Maximum Distance =
2.04 x Screen Width)
2.
Fine-tune the projection image size with the zoom and focus rings on the projection lens.
3.
Decide on the exact height you desire for the center of the screen’s Height.
4.
Place the projector on a table with a suitable height (Height - Offset) to meet your requirements, to avoid any
keystone distortion.
5.
Alternatively, use the adjusters to fine-tune the projection angle to meet your requirements, and then use the
keystone correction function to compensate for any distortion.
16:9 (480P mode) (inch)
4:3 (Full-screen mode) (inch)
Center of the screen
Center of the lens
Distance
Screen Width
40
60
80
90
100
110
120
140
160
180
200
Distance
Minimum
66
98
131
148
164
180
197
230
262
295
328
Maximum
85
128
170
192
213
234
256
298
341
383
426
Offset
20
30
39
44
49
54
59
69
79
89
98
Screen Width
40
60
80
90
100
110
120
140
160
180
200
Distance
Minimum
66
98
131
148
164
180
197
230
262
295
328
Maximum
85
128
170
192
213
234
256
298
341
383
426
Offset
18
28
37
42
46
51
55
65
74
83
92
Floor
Height
Height - Offset
Offset
Content-e.fm Page 11 Monday, July 8, 2002 4:23 PM
