NEC LT260, LT240 user manual

INSTALLATION AND CONNECTIONS ￿ Setting Up the Screen and theProjector <LT240>

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	12.6	35.7	-	43.4	3.6	19.4	- 16.2
40	32	24	16.8	48.2	-	58.4	4.8	19.2	- 16.0
60	48	36	25.2	73.2	-	88.5	7.2	19.0	- 15.9
67	54	40	28.1	81.9	-	99.0	8.0	19.0	- 15.9
72	58	43	30.2	88.1	- 106.5		8.6	18.9	- 15.8
80	64	48	33.6	98.1	- 118.6		9.6	18.9	- 15.8
84	67	50	35.3	103.1	- 124.6		10.1	18.9	- 15.8
90	72	54	37.8	110.6	- 133.6		10.8	18.9	- 15.8
100	80	60	42.0	123.1	- 148.6		12.0	18.8	- 15.8
120	96	72	50.4	148.1	- 178.7		14.4	18.8	- 15.8
150	120	90	63.0	185.5	- 223.8		18.0	18.8	- 15.7
180	144	108	75.6	223.0	- 268.9		21.6	18.7	- 15.7
200	160	120	84.0	248.0	- 298.9		24.0	18.7	- 15.7
210	168	126	88.2	260.5	- 314.0		25.2	18.7	- 15.7
240	192	144	100.8	297.9	- 359.1		28.8	18.7	- 15.7
261	209	157	109.7	324.1	- 390.6		31.4	18.7	- 15.7
270	216	162	113.4	335.4	- 404.1		32.4	18.7	- 15.7
300	240	180	126.1	372.8	- 449.2		36.1	18.7	- 15.7
350	280	210	147.1	435.3	- 524.4		42.1	18.7	- 15.7
400	320	240	168.1	497.7	- 599.6		48.1	18.7	- 15.7
450	360	270	189.1	560.1	- 674.7		54.1	18.7	- 15.7
500	400	300	210.1	622.5	- 749.9		60.1	18.6	- 15.7
	Screen Size		B		C		D		α
Diagonal	Width	Height		Wide – Tele				Wide – Tele
mm	mm	mm	mm	mm			mm	degree
762	610	457	320	907	-	1102	91	19.4	- 16.2
1016	813	610	426	1224	-	1484	122	19.2	- 16.0
1524	1219	914	640	1858	-	2248	183	19.0	- 15.9
1702	1361	1021	715	2080	-	2515	204	19.0	- 15.9
1829	1463	1097	768	2239	-	2706	219	18.9	- 15.8
2032	1626	1219	853	2493	-	3011	244	18.9	- 15.8
2134	1707	1280	896	2620	-	3164	256	18.9	- 15.8
2286	1829	1372	960	2810	-	3393	274	18.9	- 15.8
2540	2032	1524	1067	3127	-	3775	305	18.8	- 15.8
3048	2438	1829	1280	3761	-	4538	366	18.8	- 15.8
3810	3048	2286	1601	4713	-	5684	458	18.8	- 15.7
4572	3658	2743	1921	5664	-	6829	549	18.7	- 15.7
5080	4064	3048	2134	6298	-	7593	610	18.7	- 15.7
5334	4267	3200	2241	6615	-	7975	641	18.7	- 15.7
6096	4877	3658	2561	7567	-	9120	732	18.7	- 15.7
6629	5304	3978	2785	8233	-	9922	797	18.7	- 15.7
6858	5486	4115	2881	8518	-10265		824	18.7	- 15.7
7620	6096	4572	3202	9470	-11411		916	18.7	- 15.7
8890	7112	5334	3735	11055	-13320		1068	18.7	- 15.7
10160	8128	6096	4269	12641	-15229		1221	18.7	- 15.7
11430	9144	6858	4803	14227	-17138		1374	18.7	- 15.7
12700	10160	7620	5336	15813	-19046		1526	18.6	- 15.7

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