NEC NP905 NEC Display Solutions of America, Inc, Diagrams and Distance Charts, Ceiling Mounted

	NEC Display Solutions of America, Inc.
NP905 Installation Guide
Ceiling Mounted and Desktop	Rev 1.1

Diagrams and Distance Charts

The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of installation.

Distances are in inches. For millimeters multiply by 25.4.

Ceiling Mounted

D Lens Ctr

B

Screen Ctr

C		5.63"
Screen Top	Throw Distance	6.01"

Lens Offset From

Mount Pipe

Desktop

		3.74
		C
		Throw Distance
Screen Ctr
B
Lens Ctr
D	Screen Bottom	2.85"

Distance Chart for popular 4:3 screens	Screen Size (4:3)			B			C		D			α
	Diagonal	Width(W)	Height (H)		w ide - tele						w ide - tele
	inches	inches	inches	inches		inches			inches		degrees
	30	24	18	6	34		-	41	-3		10.2	-	8.5
	60	48	36	12	69		-	83	-6		10.1	-	8.4
	67	53.6	40.2	14	78		-	93	-6		10.1	-	8.4
	72	57.6	43.2	15	83		-	101	-7		10.0	-	8.4
	84	67.2	50.4	17	98		-	118	-8		10.0	-	8.4
	90	72	54	19	105		-	126	-8		10.0	-	8.4
	100	80	60	21	117		-	140	-9		10.0	-	8.4
	120	96	72	25	140		-	169	-11		10.0	-	8.3
	150	120	90	31	176		-	211	-14		10.0	-	8.3
	180	144	108	37	211		-	254	-17		10.0	-	8.3
	210	168	126	43	247		-	297	-20		10.0	-	8.3
	240	192	144	50	282		-	339	-23		9.9	-	8.3
	270	216	162	56	318		-	382	-25		9.9	-	8.3
	300	240	180	62	353		-	425	-28		9.9	-	8.3
Note: For screen sizes not indicated on the projection
tables, use the formulas on page 1.
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