Sim2 HT250 Guide de dépannage télécharger pdf (Page 10)

HT 200/250

Fig. 28

Some manufacturers offer screen-masking systems to

help frame the projected image and improve picture

contrast. This can be controlled by the second 12V output

on the projector

(Fig. 28)

The screen-masking interface can be connected to output

, at the rear of the projector, or on the optional Remo-

te Input Interface.

- Rear projection: the screen must be translucent.

- Front projection: preferably, use a screen with black,

non-reflecting borders, which will perfectly frame the

projected image.

Avoid light shining directly on the screen during projection

as this will reduce contrast and black level detail on the

projected image. For the true cinema experience best

results are achieved with little or no ambient light.

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.

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.

Fig. 29

8 LED: DESCRIPTION AND

SWITCHING ON



Position I : ON

Position O : OFF

Power switch

Fused power socket

Power plug

Fig. 30

Upon switch on (in position I) the projector will initialise,

indicated by the flashing red LED. Followed by stand-by

mode (red LED static) (

Fig. 31

CAUTION:

Connect the projector to a power

supply with a nominal voltage within the

following values: 100-240 Vac, 50/60 Hz. It

must be earthed (Fig. 30).

Do not install - or operate - the projector on its

side: this position will dramatically shortens

the life of the lamp (Fig. 29).

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Sim2 HT250 Guide de dépannage Page 10

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