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ht3000e
To activate an electric motorised screen a 12 Volt output is
provided at the rear of the projector (Fig. 10).
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.
You can also use black motirised curtains to delimit the screen
when the projected image aspect ratio changes (Fig. 11a). This
option is controlled via the output at the rear of the projector.
For rear projection the screen must be translucent.
For front projection, we recommend the use of a screen with
black matt borders to contain the projected image.
Preferably use a unit gain screen; high gain screens are only
effective when used with a small group of viewers close to the
screen’s axis.
Prevent ambient light shining directly on the screen during
projection as this will reduce the contrast of the projected
image.
Furniture and other objects with reflecting surfaces, as well as
light coloured walls should be avoided, as they are likely to
interfere with the screen’s characteristics.
Fig. 9
Fig. 10
Fig. 11a
The manual lens shift adjustment allows the projected image
to be moved vertically, up or down, in relation to the centre of
the screen; the maximum adjustment being equal to half the
height of the image in either direction (Fig. 11b).
Image shift range: 1/3 image.
Fig. 11b