Panasonic PT-TW342 Operation Instructions Manual page 28

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For PT-TX402 and PT-TX312
All measurements below are approximate and may differ slightly from the actual measurements. (Unit: m)
Projection size
Screen diagonal (SD)
1.27 (50")
1.52 (60")
1.78 (70")
2.03 (80")
2.29 (90")
2.54 (100")
Projection distance formulas
To use a screen size not listed in this manual, check the screen size SD (m) and use the respective formula to calculate
projection distance.
The unit of all the formulae is m. (Values obtained by the following calculation formulae contain a slight error.)
If you want to calculate the projection distance with projected image size SD (unit: inch) by substituting, please assign 0.0254
times to the SD value.
For PT-TW342
Screen height (SH)
Screen width (SW)
Projection distance (L)
For PT-TX402 and PT-TX312
Screen height (SH)
Screen width (SW)
Projection distance (L)
28 - ENGLISH
Chapter 2 Getting Started - Setting up
4:3 aspect ratio
Projection distance
(L)
0.46
0.55
0.65
0.75
0.85
0.94
4:3 aspect ratio
= 0.6 × SD
= 0.8 × SD
= 0.4625 × SD - 0.0339
4:3 aspect ratio
= 0.6 × SD
= 0.8 × SD
= 0.3846 × SD - 0.0339
Projection distance
Height position
(H)
0.038
0.046
0.053
0.061
0.069
0.076
16:9 aspect ratio
= 0.490 × SD
= 0.872 × SD
= 0.4188 × SD - 0.0339
= 0.490 × SD
= 0.872 × SD
= 0.4188 × SD - 0.0339
16:9 aspect ratio
Height position
(H)
(L)
0.50
0.145
0.60
0.174
0.71
0.203
0.82
0.232
0.92
0.262
1.03
0.291
16:10 aspect ratio
= 0.530 × SD
= 0.848 × SD
= 0.4085 × SD - 0.0339
16:9 aspect ratio

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