NEC VT48, VT57, VT58 Installation and Connections Throw Distance and Screen Size, Distance Chart

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

B = Vertical distance between lens center and screen center

C = Throw distance

α

Screen center

Lens center

D = Vertical distance between lens center and screen bottom (top of screen for ceiling application)

Bα = Throw angle

DNOTE: Distances may vary +/-5%.

Screen bottom

Projector bottom

VT580/VT480/VT58/VT57

			Screen Size								B					C						D				α
Diagonal				Width					Height					wide				tele							wide		tele
inch	mm		inch			mm			inch	mm	inch	mm	inch		mm	-		inch	mm		inch		mm	degree		-	degree
21	533		17			427		13		320	4	110	-		-	-	30		750		-2		-50	-		-	8.6
25	635		20			508		15		381	5	140	29		740	-	35		900		-2		-60	10.3		-	8.5
30	762		24			610		18		457	6	160	35		900	-	43		1090		-3		-70	10.2		-	8.5
40	1016		32			813		24		610	9	220	48		1210	-	57		1460		-3		-90	10.1		-	8.4
60	1524		48			1219		36		914	13	320	72		1830	-	87		2200		-5		-130	10.1		-	8.4
72	1829		58			1463		43		1097	15	390	87		2200	-	104		2650		-6		-160	10.0		-	8.4
80	2032		64			1626		48		1219	17	430	96		2450	-	116		2940		-7		-180	10.0		-	8.4
84	2134		67			1707		50		1280	18	450	101		2570	-	122		3090		-7		-190	10.0		-	8.4
90	2286		72			1829		54		1372	19	490	109		2760	-	131		3310		-8		-200	10.0		-	8.4
100	2540		80			2032		60		1524	21	540	121		3070	-	145		3690		-9		-220	10.0		-	8.3
120	3048		96			2438		72		1829	26	650	145		3690	-	174		4430		-10		-270	10.0		-	8.3
150	3810		120			3048		90		2286	32	810	182		4620	-	218		5540		-13		-330	10.0		-	8.3
180	4572		144			3658		108		2743	38	970	218		5540	-	262		6660		-16		-400	10.0		-	8.3
200	5080		160			4064		120		3048	43	1080	243		6160	-	291		7400		-17		-440	10.0		-	8.3
210	5334		168			4267		126		3200	45	1140	255		6470	-	306		7770		-18		-460	10.0		-	8.3
240	6096		192			4877		144		3658	51	1300	291		7400	-	350		8890		-21		-530	9.9		-	8.3
270	6858		216			5486		162		4115	57	1460	328		8330	-	394		10000		-24		-600	9.9		-	8.3
300	7620		240			6096		180		4572	64	1620	365		9260	-	438		11120		-26		-660	9.9		-	8.3
VT48
						Screen Size									B				C					D			α
	Diagonal						Width				Height
inch		mm				inch			mm		inch	mm		inch		mm		inch			mm		inch		mm		degree
25		635			20				508		15	381		5		140		35		890		-2			-60		8.7
30		762			24				610		18	457		6		160		42		1070		-3			-70		8.6
40		1016			32				813		24	610		9		220		57		1440		-3			-90		8.5
60		1524			48				1219		36	914		13		320		86		2180		-5			-130		8.5
72		1829			58				1463		43	1097		15		390		103		2620		-6			-160		8.4
80		2032			64				1626		48	1219		17		430		115		2920		-7			-180		8.4
84		2134			67				1707		50	1280		18		450		121		3060		-7			-190		8.4
90		2286			72				1829		54	1372		19		490		129		3290		-8			-200		8.4
100		2540			80				2032		60	1524		21		540		144		3650		-9			-220		8.4
120		3048			96				2438		72	1829		26		650		173		4390		-10			-270		8.4
150		3810			120				3048		90	2286		32		810		217		5500		-13			-330		8.4
180		4572			144				3658		108	2743		38		970		260		6610		-16			-400		8.4
200		5080			160				4064		120	3048		43		1080		289		7340		-17			-440		8.4
210		5334			168				4267		126	3200		45		1140		304		7710		-18			-460		8.4
240		6096			192				4877		144	3658		51		1300		347		8820		-21			-530		8.4
270		6858			216				5486		162	4115		57		1460		391		9930		-24			-600		8.4
300		7620			240				6096		180	4572		64		1620		434		11030		-26			-660		8.4

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