Setting-up dimensions which are not given in the abovetable can be calculated using the formulas below.LW = 0.03713 x SD – 0.05067LT = 0.049 x SD – 0.05(LW,LT: m SD: inch)For 16 : 9 aspect rations, the following formal can beused to calculate the screen width (SW).SW = (SD x 0.0254) x 16 ÷ 337The value for SW obtained above can then be usedwith the following function to calculate the projectiondistance for the wide lens position (LW) and theprojection distance for the telephoto lens position (LT).LW = 1.827 x SW – 0.05067LT = 2.411 x SW – 0.0517InstallationProjection schemesAny of the following four projection schemes can beused with the PT-D3500U projector depending onuser’s needs or viewing conditions.Use “OPTION2” menu (chosen from the MENU) tochoose the appropriate projection scheme (seepage 35).Projection Scheme 1Front projectionRear projectionTable standingProjection Scheme 2Ceiling mount(Default position)Installation geometryAfter the projector is roughly positioned, picture sizeand vertical picture positioning can be finelyadjusted with the powered zoom lens and lens tiltmechanism.L : Projection distanceSH : Image heightSW : Image widthH : Distance from center of lens to bottom edge ofprojected image.0.76[2'5'']0.91[2'11'']1.07[3'6'']1.22[4']1.37[4'5'']1.52[4'11'']1.83[6']2.29[7'6'']3.05[10']3.81[12'6'']4.57[14'11'']5.33[17'5'']6.10[20']7.62[25']9.14[29'11'']1.02[3'4'']1.22[4']1.42[4'7'']1.63[5'4'']1.83[6']2.03[6'7'']2.44[8']3.05[10']4.06[13'3'']5.08[16'8'']6.10[20']7.11[23'3'']8.13[26'8'']10.16[33'4'']12.19[39'11'']1.81[5'11'']2.18[7'1'']2.55[8'4'']2.92[9'6'']3.29[10'9'']3.66[12']4.41[14'5'']5.52[18'1'']7.38[24'2'']9.23[30'3'']11.09[36'4'']12.95[42'5'']14.80[48'6'']18.51[60'8'']22.23[72'11'']1.27(50")1.52(60")1.78(70")2.03(80")2.29(90")2.54(100")3.05(120")3.81(150")5.08(200")6.35(250")7.62(300")8.89(350")10.16(400")12.70(500")15.24(600")2.40[7'10'']2.89[9'5'']3.38[11'1'']3.87[12'8'']4.36[14'3'']4.85[15'10'']5.83[19'1'']7.30[23'11'']9.75[31'11'']12.20[40']14.65[48']17.10[56'1'']19.55[64'1'']24.45[80'2'']29.35[96'3'']0 to 0.38(0 to 14 61 /64 )0 to 0.46(0 to 18 7 /64 )0 to 0.53(0 to 20 55 /64 )0 to 0.61(0 to 24 1 /64 )0 to 0.69(0 to 27 11 /64 )0 to 0.76(0 to 29 59 /64 )0 to 0.91(0 to 35 53 /64 )0 to 1.14(0 to 44 7 /8 )0 to 1.52(0 to 59 27 /32 )0 to 1.91(0 to 75 13 /64 )0 to 2.29(0 to 90 5 /32 )0 to 2.67(0 to 105 1 /8 )0 to 3.05(0 to 120 5 /64 )0 to 3.81(0 to 150)0 to 4.57(0 to 179 59 /64 )Projection distance: LUnit : m ( ) : inch [ ] : footHeightposition: HDiagonallength (SD)Height(SH)Width(SW)Minimum(LW)Maximum(LT)Screen Size (4 : 3)Note • The dimensions in the table above andthe values obtained from the aboveformulas may contain slight errors.• It is recommended that you use theprojection distance for the wide lens position.• The above dimensions are the casewhen the aspect ratio is 4:3. When anSXGA signal is input and projected, theright and left ends of the picture will beblanked the aspect ratio will be 5:4.Projection distancesListed in the table below are the projection distancesof the standard lens provided with the PT-D3500U.Refer to page 61 for the projection distances of theprojection lenses available as optional accessories.• Do not place or use one projector on topof another projection unit.• Install the projector such that the exhaustport on the rear side is not blocked and aclearance of more than 30 cm (1113/16") isavailable.AttentionSide viewWith optional ceiling mountbracket (ET-PKD35)270(10 5 /8 )HHScreenSH 172(6 25 /32 )LL