NEC LT240, LT260 user manual

INSTALLATION AND CONNECTIONS ￿ Setting Up the Screen and theProjector <LT220>

B = Vertical distance between lens center and screen center

C = Throw distance

D = Vertical distance between lens center and bottom of screen

α= Throw angle

NOTE: Distances may vary +/-5%.

	Screen Size		B		C		D		α
Diagonal	Width	Height		Wide – Tele				Wide – Tele
inch	inch	inch	inch	inch			inch	degree
30	24	18	13.0	48.0	-	59.0	4.0	15.2	- 12.4
40	32	24	17.4	64.5	-	79.0	5.4	15.1	- 12.4
60	48	36	26.0	97.6	- 119.0		8.0	14.9	- 12.3
67	54	40	29.1	109.1	- 133.0		9.0	14.9	- 12.3
72	58	43	31.2	117.4	- 143.0		9.6	14.9	- 12.3
80	64	48	34.7	130.6	- 159.0		10.7	14.9	- 12.3
84	67	50	36.4	137.2	- 167.0		11.2	14.9	- 12.3
90	72	54	39.0	147.1	- 179.0		12.0	14.9	- 12.3
100	80	60	43.4	163.7	- 199.0		13.4	14.8	- 12.3
120	96	72	52.1	196.7	- 239.0		16.1	14.8	- 12.3
150	120	90	65.1	246.3	- 299.0		20.1	14.8	- 12.3
180	144	108	78.1	295.9	- 359.0		24.1	14.8	- 12.3
200	160	120	86.8	328.9	- 399.0		26.8	14.8	- 12.3
210	168	126	91.1	345.4	- 419.0		28.1	14.8	- 12.3
240	192	144	104.1	395.0	- 479.0		32.1	14.8	- 12.3
261	209	157	113.2	429.7	- 521.0		34.9	14.8	- 12.3
270	216	162	117.1	444.6	- 539.0		36.1	14.8	- 12.3
300	240	180	130.1	494.2	- 599.0		40.1	14.8	- 12.3
350	280	210	151.8	576.8	- 699.0		46.8	14.7	- 12.3
400	320	240	173.5	659.4	- 799.0		53.5	14.7	- 12.3
450	360	270	195.2	742.0	- 899.0		60.2	14.7	- 12.2
500	400	300	216.9	824.7	- 999.0		66.9	14.7	- 12.2
	Screen Size		B		C		D		α
Diagonal	Width	Height		Wide – Tele				Wide – Tele
mm	mm	mm	mm		mm		mm	degree
762	610	457	331	1219	-	1498	102	15.2	- 12.4
1016	813	610	441	1639	-	2006	136	15.1	- 12.4
1524	1219	914	661	2478	-	3022	204	14.9	- 12.3
1702	1361	1021	738	2772	-	3378	228	14.9	- 12.3
1829	1463	1097	793	2982	-	3632	245	14.9	- 12.3
2032	1626	1219	882	3318	-	4038	272	14.9	- 12.3
2134	1707	1280	926	3485	-	4242	286	14.9	- 12.3
2286	1829	1372	992	3737	-	4546	306	14.9	- 12.3
2540	2032	1524	1102	4157	-	5054	340	14.8	- 12.3
3048	2438	1829	1322	4996	-	6070	408	14.8	- 12.3
3810	3048	2286	1653	6256	-	7595	510	14.8	- 12.3
4572	3658	2743	1983	7515	-	9119	612	14.8	- 12.3
5080	4064	3048	2203	8354	-10135		679	14.8	- 12.3
5334	4267	3200	2314	8774	-10643		713	14.8	- 12.3
6096	4877	3658	2644	10033	-12167		815	14.8	- 12.3
6629	5304	3978	2875	10915	-13234		887	14.8	- 12.3
6858	5486	4115	2975	11292	-13691		917	14.8	- 12.3
7620	6096	4572	3305	12552	-15215		1019	14.8	- 12.3
8890	7112	5334	3856	14650	-17755		1189	14.7	- 12.3
10160	8128	6096	4407	16749	-20295		1359	14.7	- 12.3
11430	9144	6858	4958	18848	-22835		1529	14.7	- 12.2
12700	10160	7620	5508	20946	-25375		1698	14.7	- 12.2

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