Arrangement - Hitachi CP-RX78 Operating Manual

Arrangement

Refer to the illustrations and tables below to determine screen size and projection distance.
The values shown in the table are calculated for a full size screen: 1024 x 768
Screen size (diagonal)
a
c1 , c2 Screen height (±10%)
On a horizontal surface
a
Screen size
Projection distance
(diagonal)
min.
type
m m inch
(inch)
0.8 33
30 0.8
40 1.0 1.1 45
50 1.3 1.4 56
60 1.5 1.7 68
70 1.8 2.0 80
80 2.0 2.3 91
90 2.3 2.6 103
100 2.5 2.9 114
120 3.0 3.5 137
150 3.8 4.4 172
200 5.1 5.8 230
250 6.4 7.3 287
300 7.6 8.8 345 10.5 414 381 150
WARNING
and removing the projector with the mounting accessories to the service personnel.
CAUTION
Position the projector to prevent light from directly hitting the projector's remote sensor.
6
Projection distance (±10%)
b
the projector and other objects such as walls. Do not
place or attach anything that would block the lens or
vent holes.
16
(
the projector, consult your dealer about your installation.
4 : 3 screen
b
c1
Screen
height
max.
m inch cm inch
1.0 40 38 15
1.4 54 51 20
1.7 68 64 25
2.1 82 76 30
2.4 96 89 35
2.8 110 102 40
3.1 123 114 45
3.5 137 127 50
4.2 165 152 60
5.2 207 191 75
7.0 276 254 100
8.8 345 318 125
Suspended from the ceiling
b
c2
Projection distance
Screen
height
min.
cm inch m inch
8 3 0.9 36
10 4 1.2 49
13 5 1.6 62
15 6 1.9 74
18 7 2.2 87
20 8 2.5 99
23 9 2.8 112
25 10 3.2 124
30 12 3.8 150
38 15 4.8 187
51 20 6.4 250
64 25 8.0 313
76 30 9.5 376 11.5 452 353 139
16 : 9 screen
c1
Screen
height
max.
m inch cm inch
1.1 44 35 14
1.5 59 47 19
1.9 74 59 23
2.3 89 71 28
2.7 104 82 32
3.0 119 94 37
3.4 135 106 42
3.8 150 118 46
4.6 180 141 56
5.7 225 176 69
7.6 301 235 93
9.6 376 294 116
c2
Screen
height
cm inch
2 1
3 1
3 1
4 2
5 2
6 2
6 2
7 3
8 3
10 4
14 5
17 7
21 8