Installation

Projection schemes

Any of the following four projection schemes can be used with the PT-D5500E/D5500EL projector depending on user’s needs or viewing conditions. Use “OPTION 2” menu (chosen from the MAIN MENU) to choose the appropriate projection scheme (see page 34).

Projection Scheme 2

 

 

Table standing

Ceiling mount

Scheme 1

Front projection

(Default position)

 

Projection

Rear projection

 

 

Installation geometry

After the projector is roughly positioned, picture size and vertical picture positioning can be finely adjusted with the powered zoom lens and lens tilt mechanism.

Side view

With optional ceiling mount

 

346

422

bracket (ET-PKD55)

 

 

 

 

H

 

 

 

L

 

 

 

SH

180

261

 

 

 

 

H

Screen

L: Projection distance SH : Image height

SW : Image width

H : Distance from centre of lens to bottom edge of projected image.

Top view

SW

 

L

314

 

157

 

 

87.5

 

 

Screen

175

 

 

 

 

Projection distances

Listed in the table below are the projection distances of the standard lens provided with the PT-D5500E (with lens).

Refer to page 57 for the projection distances of the projection lenses available as optional accessories.

 

 

 

 

 

Unit : m (SD : inch)

 

Screen Size (4 : 3)

Projection distance: L

Height

 

 

 

 

 

 

 

 

 

 

Diagonal

Height

Width

Minimum

Maximum

position: H

 

 

length (SD)

 

(SH)

(SW)

(LW)

(LT)

 

 

 

50

 

0.76

1.02

1.79

2.38

0 - 0.38

 

 

60

 

0.91

1.22

2.16

2.87

0 - 0.46

 

 

70

 

1.07

1.42

2.53

3.35

0 - 0.53

 

 

80

 

1.22

1.63

2.90

3.84

0 - 0.61

 

 

90

 

1.37

1.83

3.27

4.33

0 - 0.69

 

 

100

 

1.52

2.03

3.64

4.82

0 - 0.76

 

 

120

 

1.83

2.44

4.38

5.80

0 - 0.91

 

ENGLISH

150

 

2.29

3.05

5.49

7.26

0 - 1.14

 

 

 

 

200

 

3.05

4.06

7.34

9.70

0 - 1.52

 

 

250

 

3.81

5.08

9.20

12.14

0 - 1.91

 

 

300

 

4.57

6.10

11.05

14.59

0 - 2.29

 

 

350

 

5.33

7.11

12.90

17.03

0 - 2.67

 

 

400

 

6.10

8.13

14.75

19.47

0 - 3.05

 

 

500

 

7.62

10.16

18.46

24.35

0 - 3.81

 

 

600

 

9.14

12.19

22.16

29.24

0 - 4.57

 

 

Setting-up dimensions which are not given in the

 

above table can be calculated using the formulas

 

below.

 

 

 

 

 

 

 

LW = 0.0370 x SD – 0.0650

 

 

 

 

LT = 0.0488 x SD – 0.0638

 

 

 

 

(LW,LT: m SD: inch)

 

 

 

 

For 16 : 9 aspect rations, the following formal can be

 

used to calculate the screen width (SW).

 

 

 

SW = (SD x 0.0254) x 16 ÷ 337

 

 

 

The value for SW obtained above can then be used

 

with the following function to calculate the projection

 

distance for the wide lens position (LW) and the

 

projection distance for the telephoto lens position (LT).

 

LW = 1.823 x SW – 0.0650

 

 

 

 

LT = 2.403 x SW – 0.0638

 

 

 

 

Note

• The dimensions in the table above and

 

 

 

the values obtained from the above

 

formulas may contain slight errors.

It is recommended that you use the projection distance for the wide lens position.

The above dimensions are the case when the aspect ratio is 4:3. When an SXGA signal is input and projected, the right and left ends of the picture will be blanked the aspect ratio will be 5:4.

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Panasonic PT-D5500EL manual Projection schemes, Installation geometry, Projection distances