Sim2 HT280 Installation Manual Page 10

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8
KEYSTONE
20%
C-SYNC
Fig. 9
The Orientation adjustment in the Set up menu will allow the
projector to be used for desktop front, ceiling front, desktop
rear and ceiling rear installations
(Fig. 10)
.
D
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IT
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(R
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23
2
)
G
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1
2
4
3
5
A
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CAUTION: for continued protection against
risk of fire, replace
only with sam
e type
and rating fuse.
Fig. 10
To activate an electric motorised screen a 12 Volt output is
provided at the rear of the projector. This can be connected to
a screen interface unit, which can be supplied by screen
manufacturers
(Fig. 11)
.
D
IG
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T
A
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I
N
P
U
T
A
U
D
I
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O
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ZOOM
CONTROL (RS 232)
GRAPHICS RGB
R/Cr
G/Y
B/Cb
HV
1
2
4
3
5
A
TT
E
N
T
IO
N
:
p
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et
tr
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ot
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CA
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: fo
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on
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pr
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te
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ion
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, re
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ly w
it
h s
a
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ty
p
e
a
n
d
r
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ti
n
g
fu
s
e.
Fig. 11
The output is activated (Voltage: 12 Vdc) when the projector is
switched on and is de-activated (no Voltage output) when the
projector is in stand-by mode.
Some manufacturers offer screen-masking systems to help fra-
me the projected image and improve picture contrast. These
systems can be connected to output
, at the rear of the
projector
(Fig. 12)
.
D
IG
IT
A
L
IN
P
U
T
A
U
D
IO
O
U
T
ZOOM
C
O
N
T
R
O
L
(R
S
2
3
2
)
G
R
A
P
H
IC
S
R
G
B
R
/
C
r
G
/
Y
B
/
C
b
H
V
1
2
4
3
5
ATTENTION: pour ne pas compromettre
la protection contre les resque d'incende
remplacer par un fusible de meme type
et de mems caracteristique
CAUTION: for continued protection against
risk of fire, replace
only with same type
and rating fuse.
Fig. 12
For rear projection the screen must be translucent.
For front projection, we recommend the use of screens with
low gain specifications (i.e. 1.3 to 2). The use of high gain
screens should be avoided due to their limited viewing angle,
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