NEC LT30 LT30/LT35 UM - Page 18

2. Installation and Connections Throw Distance and Screen Size The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of installation. Distance Chart C Screen center α Projector bottom Lens center 2.4"/60 mm B Screen bottom B = Vertical distance between lens center and screen center C = Throw distance α = Throw angle NOTE: Distances may vary +/-5%. Screen Size B Diagonal Width Height inch inch inch inch 30 24 18 9 40 32 24 12 60 48 36 18 67 54 40 20 72 58 43 22 80 64 48 24 84 67 50 25 90 72 54 27 100 80 60 30 120 96 72 36 150 120 90 45 180 144 108 54 200 160 120 60 220 176 132 66 240 192 144 72 260 208 156 78 280 224 168 84 300 240 180 90 C Wide - Tele inch 42 - 51 57 - 69 86 - 104 96 - 116 104 - 125 115 - 139 121 - 146 130 - 156 145 - 174 174 - 209 218 - 261 262 - 314 291 - 349 320 - 384 350 - 419 379 - 454 408 - 489 438 - 524 α Wide - Tele degree 12.1 - 10.0 11.9 - 9.9 11.8 - 9.9 11.8 - 9.9 11.7 - 9.8 11.8 - 9.8 11.7 - 9.8 11.7 - 9.8 11.7 - 9.8 11.7 - 9.8 11.7 - 9.8 11.7 - 9.8 11.6 - 9.7 11.6 - 9.7 11.6 - 9.7 11.6 - 9.7 11.6 - 9.7 11.6 - 9.7 Screen Size Diagonal mm 762 1016 1524 1702 1829 2032 2134 2286 2540 3048 3810 4572 5080 5588 6096 6604 7112 7620 Width mm 610 813 1219 1361 1463 1626 1707 1829 2032 2438 3048 3658 4064 4470 4877 5283 5690 6096 Height mm 457 610 914 1021 1097 1219 1280 1372 1524 1829 2286 2743 3048 3353 3658 3962 4267 4572 B mm 229 305 457 511 549 610 640 686 762 914 1143 1372 1524 1676 1829 1981 2134 2286 C Wide - Tele mm 1070 1450 2190 2450 2640 2930 3080 - 1290 1740 2630 2940 3170 3520 3700 3310 - 3970 3680 - 4410 4420 - 5300 5540 - 6640 6650 - 7980 7400 - 8870 8140 - 9760 8890 - 10650 9630 - 11540 10370 - 12430 11120 - 13320 α Wide - Tele degree 12.1 - 10.0 11.9 - 9.9 11.8 - 9.9 11.8 - 9.9 11.7 - 9.8 11.8 - 9.8 11.7 - 9.8 11.7 - 9.8 11.7 - 9.8 11.7 - 9.8 11.7 - 9.8 11.7 - 9.8 11.6 - 9.7 11.6 - 9.7 11.6 - 9.7 11.6 - 9.7 11.6 - 9.7 11.6 - 9.7 10