Panasonic PT-DX820W Посібник - Сторінка 12
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Calculation of the projection distance
For a screen size different from the above, use the equation below to calculate the projection distance.
Aspect ratio 4:3
ET-DLE085
minimum
maximum
ET-DLE105
minimum
maximum
ET-DLE150
minimum
maximum
Supplied lens
minimum
maximum
ET-DLE250
minimum
maximum
ET-DLE350
minimum
maximum
ET-DLE450
minimum
maximum
ET-DLE030
(fixed focus)
ET-DLE055
(fixed focus)
Aspect ratio 16:9
ET-DLE085
minimum
maximum
ET-DLE105
minimum
maximum
ET-DLE150
minimum
maximum
Supplied lens
minimum
maximum
ET-DLE250
minimum
maximum
ET-DLE350
minimum
maximum
ET-DLE450
minimum
maximum
ET-DLE030
(fixed focus)
ET-DLE055
(fixed focus)
• Distances calculated with the above equations will include a slight error.
Formula for calculating possible heights when using the ET-DLE030
If using a screen size which has not been previously mentioned, use the following calculation formulas to
obtain the possible setting-up height.
For screen aspect ratio of 4:3
For screen aspect ratio of 16:9
* There may be a small margin of error in the values obtained from the above formulas.
As of February 2017
SFD15M025-2
PT-DX820W/DX820LW/DX820B/DX820LB
L (m) = (diagonal screen size in inches) × 0.0170 - 0.0471
L (m) = (diagonal screen size in inches) × 0.0211 - 0.0442
L (m) = (diagonal screen size in inches) × 0.0212 - 0.0511
L (m) = (diagonal screen size in inches) × 0.0284 - 0.0472
L (m) = (diagonal screen size in inches) × 0.0280 - 0.0540
L (m) = (diagonal screen size in inches) × 0.0403 - 0.0498
L (m) = (diagonal screen size in inches) × 0.0370 - 0.0746
L (m) = (diagonal screen size in inches) × 0.0517 - 0.0725
L (m) = (diagonal screen size in inches) × 0.0488 - 0.0800
L (m) = (diagonal screen size in inches) × 0.0771 - 0.0792
L (m) = (diagonal screen size in inches) × 0.0770 - 0.1351
L (m) = (diagonal screen size in inches) × 0.1163 - 0.1346
L (m) = (diagonal screen size in inches) × 0.1165 - 0.3017
L (m) = (diagonal screen size in inches) × 0.1842 - 0.2991
L1 (m) = (diagonal screen size in inches) × 0.0080 + 0.0047
L3 (m) = L1-0.146
L4 (m) = L1-0.644
L (m) = (diagonal screen size in inches) × 0.0171 - 0.0476
L (m) = (diagonal screen size in inches) × 0.0186 - 0.0471
L (m) = (diagonal screen size in inches) × 0.0230 - 0.0442
L (m) = (diagonal screen size in inches) × 0.0231 - 0.0511
L (m) = (diagonal screen size in inches) × 0.0310 - 0.0472
L (m) = (diagonal screen size in inches) × 0.0305 - 0.0540
L (m) = (diagonal screen size in inches) × 0.0439 - 0.0498
L (m) = (diagonal screen size in inches) × 0.0403 - 0.0746
L (m) = (diagonal screen size in inches) × 0.0563 - 0.0725
L (m) = (diagonal screen size in inches) × 0.0532 - 0.0800
L (m) = (diagonal screen size in inches) × 0.0840 - 0.0792
L (m) = (diagonal screen size in inches) × 0.0839 - 0.1351
L (m) = (diagonal screen size in inches) × 0.1267 - 0.1346
L (m) = (diagonal screen size in inches) × 0.1270 - 0.3017
L (m) = (diagonal screen size in inches) × 0.2007 - 0.2991
L1 (m) = (diagonal screen size in inches) × 0.0087 + 0.0047
L3 (m) = L1-0.146
L4 (m) = L1-0.644
L (m) = (diagonal screen size in inches) × 0.0186 - 0.0476
Possible setting-up height A1 (mm) = Projection screen size (inches) x 4.8-66.5
Possible setting-up height A2 (mm) = A1 + 175
Possible setting-up height A1 (mm) = Projection screen size (inches) x 7.3-66.5
Possible setting-up height A2 (mm) = A1 + 175
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