NEC VT695 VT49/490/491/590/595/695 UM - Page 19

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 α Projector bottom C Screen center Lens center B = Vertical distance between lens center and screen center C = Throw distance D = Vertical distance between lens center and screen bottom (top of screen for ceiling application) B α = Throw angle D NOTE: Distances may vary +/-5%. Screen bottom VT695 Screen Size Diagonal Width Height B C wide inch mm inch mm inch mm inch mm inch mm - 21 533 17 427 13 320 4 110 - - - 25 635 20 508 15 381 5 130 28 720 - 30 762 24 610 18 457 6 160 34 870 - 40 1016 32 813 24 610 8 210 46 1170 - 60 1524 48 1219 36 914 12 310 70 1770 - 72 1829 58 1463 43 1097 15 380 84 2130 - 80 2032 64 1626 48 1219 17 420 93 2370 - 84 2134 67 1707 50 1280 17 440 98 2490 - 90 2286 72 1829 54 1372 19 470 105 2670 - 100 2540 80 2032 60 1524 21 520 117 2970 - 120 3048 96 2438 72 1829 25 630 141 3570 - 150 3810 120 3048 90 2286 31 790 176 4470 - 180 4572 144 3658 108 2743 37 940 211 5370 - 200 5080 160 4064 120 3048 41 1050 235 5970 - 210 5334 168 4267 126 3200 43 1100 247 6270 - 240 6096 192 4877 144 3658 50 1260 282 7170 - 270 6858 216 5486 162 4115 56 1410 318 8070 - 300 7620 240 6096 180 4572 62 1570 353 8970 - VT595/VT590/VT490/VT59 Screen Size Diagonal Width Height B C wide inch mm inch mm inch mm inch mm inch mm - 21 533 17 427 13 320 4 110 - - - 25 635 20 508 15 381 5 140 29 740 - 30 762 24 610 18 457 6 160 35 900 - 40 1016 32 813 24 610 9 220 48 1210 - 60 1524 48 1219 36 914 13 320 72 1830 - 72 1829 58 1463 43 1097 15 390 87 2200 - 80 2032 64 1626 48 1219 17 430 96 2450 - 84 2134 67 1707 50 1280 18 450 101 2570 - 90 2286 72 1829 54 1372 19 490 109 2760 - 100 2540 80 2032 60 1524 21 540 121 3070 - 120 3048 96 2438 72 1829 26 650 145 3690 - 150 3810 120 3048 90 2286 32 810 182 4620 - 180 4572 144 3658 108 2743 38 970 218 5540 - 200 5080 160 4064 120 3048 43 1080 243 6160 - 210 5334 168 4267 126 3200 45 1140 255 6470 - 240 6096 192 4877 144 3658 51 1300 291 7400 - 270 6858 216 5486 162 4115 57 1460 328 8330 - 300 7620 240 6096 180 4572 64 1620 365 9260 - tele D α wide tele inch mm inch mm degree - degree 29 730 -2 -50 - - 8.6 34 870 -2 -60 10.3 - 8.6 41 1050 -3 -70 10.2 - 8.5 56 1410 -4 -100 10.1 - 8.4 84 2130 -6 -140 10.1 - 8.4 101 2560 -7 -170 10.0 - 8.4 112 2850 -8 -190 10.0 - 8.4 118 2990 -8 -200 10.0 - 8.4 126 3210 -8 -210 10.0 - 8.4 141 3570 -9 -240 10.0 - 8.3 169 4290 -11 -290 10.0 - 8.3 211 5370 -14 -360 10.0 - 8.3 254 6450 -17 -430 10.0 - 8.3 282 7170 -19 -480 10.0 - 8.3 296 7530 -20 -500 10.0 - 8.3 339 8610 -23 -570 9.9 - 8.3 381 9690 -25 -640 9.9 - 8.3 424 10770 -28 -710 9.9 - 8.3 tele D α wide tele inch mm inch mm degree - degree 30 750 -2 -50 - - 8.6 35 900 -2 -60 10.3 - 8.5 43 1090 -3 -70 10.2 - 8.5 57 1460 -3 -90 10.1 - 8.4 87 2200 -5 -130 10.1 - 8.4 104 2650 -6 -160 10.0 - 8.4 116 2940 -7 -180 10.0 - 8.4 122 3090 -7 -190 10.0 - 8.4 131 3310 -8 -200 10.0 - 8.4 145 3690 -9 -220 10.0 - 8.3 174 4430 -10 -270 10.0 - 8.3 218 5540 -13 -330 10.0 - 8.3 262 6660 -16 -400 10.0 - 8.3 291 7400 -17 -440 10.0 - 8.3 306 7770 -18 -460 10.0 - 8.3 350 8890 -21 -530 9.9 - 8.3 394 10000 -24 -600 9.9 - 8.3 438 11120 -26 -660 9.9 - 8.3 11