Sim2 Multimedia SVD 500 PLUS Desk-top front projection, Desktop rear projection, Front Projection

SVP 450 PLUS - SVD 500 PLUS

4.3.2 Desk-top front projection

Correct use of the spacers, as shown in the spacer tables, is mandatory for a perfect focus uniformity. Check that the projector is perfectly stable.

The projector bottom must be parallel with the floor

SCREEN

SCREEN CENTRE

B

A

The distance between the projector and the screen (depending on screen dimensions), is shown in the following table.

TABLE 1: FRONT PROJECTION

SCREEN SIZE			A
Useful area 4/3
Diagonal	Width	Height
(Inches)	(cm.)	(cm.)	(cm.)
60”	121,9	91,4	186
80”	165,5	121,9	245
90”	182,9	137,2	265
100”	203,2	152,4	304
120”	243,8	182,9	365
150”	304,8	228,6	455
180”	365,7	274,3	545
200”	406,4	304,8	600
250”	508,0	381,0	750
300”	609,6	457,2	900

A = Distance between the front panel and the screen

B = Distance between the projector’s desktop line and screen centre.

Note: The screen size refers to the usable area (4/3 format).

When installing the projector, it is recommended to increase by 5 cm the distance from the screen as indicated in the table. The picture adjustment can be carried out later through the deflection menu.

A greater distance produces a picture slightly bigger than the screen, its dimension can be reduced during installation by means of the deflection menu.

If the size of the screen diagonal is not given in the table, dimension A (in cm) is determined as follows:

-Measure the screen diagonal and take the nearest value from the table.

-Calculate the ratio between the table value and the relative width.

-Multiply the value obtained by the actual screen width.

Example: Suppose we have a 105” screen diagonal. 100” is the nearest value in the table.

Ihe A/Width ratio is equal to304:293.2=1,49. A 105” screen diagonal is 213.3 wide.

So, the value of A is: 1,49x213,3=317.8 cm.

4.3.3 Desktop rear projection

For rear projection we recommend installing the projector with the axis of the green lens orthogonal to the screen plane; pay attention that the green lens be centered with respect to the screen.

By using Fresnel lenses for rear projection, it is mandatory to install the projector orthogonal to the centre of the screen to achieve maximum brightness and a better per- formance.

SCREEN

SCREEN CENTRE

C

The use of the correct spacers as shown in the spacers table is mandatory for a perfect focus uniformity.

The distance between projector and screen is given in the following table.

TABLE 2: DESKTOP REAR PROJECTION

C = Distance between the front panel and the screen.

SCREEN SIZEO			C
Useful area 4/3
Diagonal	Width	Height
(Inches)	(cm.)	(cm.)	(cm.)
60”	121,9	91,4	188
80”	162,5	121,9	247
90”	182,5	137,2	275
100”	203,2	152,4	305
120”	243,8	182,9	370
150”	304,8	228,6	460
180”	365,7	274,3	550
200”	406,4	304,8	605
250”	508,0	381,0	755
300”	609,6	457,2	900

16