Ceiling Mount Installation; Distance Chart - NEC GT1150 Installation Data
Desktop and ceiling mount
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Also See for GT1150:
- User manual (79 pages) ,
- Installation manual (10 pages) ,
- Specifications (2 pages)
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GT1150/2150 Installation Data
Desktop and Ceiling Mount
Projection Distance and Screen Size for Ceiling Mount
The following shows the proper relative position of the projector and screen. Refer to the table for installation data.
Distances are in inches. For millimeters multiply by 25.4.
Ceiling Mount Installation
Screen Ctr
Note: Lens shift is not available on GT10RL(rear lens). GT10RL should be used only for "zero degree/no-offset" applications.
Distance Chart
Screen Size (4:3)
Diagonal
Width(H)
Height (V)
inches
inches
40
32
60
48
67
53.6
72
57.6
84
67.2
90
72
100
80
120
96
150
120
180
144
210
168
240
192
270
216
300
240
400
320
500
400
Note:
For screen sizes not indicated on the projection tables, use the formulas on page 1.
Vertical Offset
rear lens
GT10RL
1.0:1
inches
inches
24
30.4
39.6 - 49.2
36
46.8
60.6 - 75.0
40.2
52.6
67.9 - 84.0
43.2
56.7
73.1 - 90.5
50.4
66.6
85.7 - 105.9
54
71.5
92.0 - 113.7
60
79.7
102.5 - 126.6
72
96.1
123.4 - 152.3
90
120.8
154.9 - 191.0
108
145.4
186.3 - 229.7
126
170.1
217.7 - 268.3
144
194.7
249.2 - 307.0
162
219.4
280.6 - 345.7
180
244.0
312.1 - 384.3
240
NA
300
NA
Throw Distance
Throw Distance
GT13ZL
GT19ZL
1.3 - 1.6:1
1.8 - 2.4:1
inches
inches
56.4 - 74.3
86.2 - 113.1
96.7 - 126.7
104.1 - 136.3
122.0 - 159.6
131.0 - 171.2
145.9 - 190.6
175.7 - 229.4
220.4 - 287.5
265.2 - 345.7
309.9 - 403.9
354.6 - 462.0
399.4 - 520.2
444.1 - 578.3
NA
NA
NA
NA
9.7"
6.6"
Lens Centered
with Mount
zoom lenses
GT24ZL
2.4 - 3.4:1
inches
NA
111.8 - 164.2
125.4 - 183.9
135.1 - 198.0
158.4 - 231.8
170.0 - 248.7
189.5 - 276.9
228.3 - 333.2
286.6 - 417.7
344.9 - 502.2
403.1 - 586.7
461.4 - 671.2
519.7 - 755.7
578.0 - 840.2
772.2 - 1121.9
NA
Visual Systems
Rev 3.0
GT
GT34ZL
3.4 - 5.2:1
inches
NA
NA
NA
NA
231.9 - 351.3
249.0 - 376.9
277.4 - 419.5
334.2 - 504.7
419.5 - 632.6
504.7 - 760.5
590.0 - 888.4
675.3 - 1016.3
760.5 - 1144.1
845.8 - 1272.0
1130.0 - 1698.3
1414.1 - 2124.6
Page 2
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