Fig. 9
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
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.
Fig. 10
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. 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