Sim2 Multimedia HT305 installation manual Fig, For rear projection the screen must be translucent

KEYSTONE

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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).

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).

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 frame the projected image and improve picture contrast. These systems can be connected to output , at the rear of the projector (Fig. 12).

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, which is undesirable for a large audience.

Preferably, use a screen with black, non-reflecting borders, which will perfectly frame the projected image.

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