NEC MT830 - Manual (Page 23)

23
43
44
Standard Zoom Lens (Wide)
Standard Zoom Lens (Tele)
INSTALLATION
α
β (sin= α )
γ (cos= α )
Screen Size
H–Width
4 : 3 Diagonal
A
B
C
F
Degree
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
9.0
0.16
0.99
32
813
40
1572
61.9
332
13.1
1552
61.11
-27
-1.0
8.9
0.15
0.99
48
1219
60
2400
94.5
455
17.9
2371
93.36
3
0.1
8.8
0.15
0.99
56
1422
70
2814
110.8
516
20.3
2781
109.48
17
0.7
8.8
0.15
0.99
64
1626
80
3228
127.1
578
22.7
3190
125.60
32
1.3
8.8
0.15
0.99
72
1829
90
3642
143.4
639
25.2
3600
141.72
47
1.8
8.7
0.15
0.99
80
2032
100
4056
159.7
701
27.6
4009
157.84
62
2.4
8.7
0.15
0.99
96
2438
120
4884
192.3
824
32.4
4828
190.08
91
3.6
8.7
0.15
0.99
120
3048
150
6127
241.2
1009
39.7
6057
238.45
135
5.3
8.7
0.15
0.99
144
3658
180
7369
290.1
1194
47.0
7285
286.81
179
7.0
8.6
0.15
0.99
160
4064
200
8197
322.7
1317
51.8
8104
319.05
208
8.2
8.6
0.15
0.99
192
4877
240
9853
387.9
1563
61.5
9742
383.54
267
10.5
8.6
0.15
0.99
216
5486
270
11096
436.8
1748
68.8
10970
431.90
311
12.2
8.6
0.15
0.99
240
6096
300
12338
485.7
1932
76.1
12199
480.27
355
14.0
α
β (sin= α )
γ (cos= α )
Screen Size
H–Width
4 : 3 Diagonal
A
B
C
F
Degree
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
6.9
0.12
0.99
32
813
40
2041
80.4
332
13.1
2027
79.78
-27
-1.0
6.8
0.12
0.99
48
1219
60
3118
122.7
455
17.9
3096
121.88
3
0.1
6.8
0.12
0.99
56
1422
70
3656
143.9
516
20.3
3630
142.92
17
0.7
6.8
0.12
0.99
64
1626
80
4194
165.1
578
22.7
4165
163.97
32
1.3
6.7
0.12
0.99
72
1829
90
4732
186.3
639
25.2
4699
185.02
47
1.8
6.7
0.12
0.99
80
2032
100
5270
207.5
701
27.6
5234
206.06
62
2.4
6.7
0.12
0.99
96
2438
120
6346
249.9
824
32.4
6303
248.15
91
3.6
6.7
0.12
0.99
120
3048
150
7961
313.4
1009
39.7
7907
311.29
135
5.3
6.7
0.12
0.99
144
3658
180
9575
377.0
1194
47.0
9511
374.43
179
7.0
6.6
0.12
0.99
160
4064
200
10651
419.3
1317
51.8
10580
416.52
208
8.2
6.6
0.12
0.99
192
4877
240
12804
504.1
1563
61.5
12718
500.71
267
10.5
6.6
0.12
0.99
216
5486
270
14418
567.6
1748
68.8
14322
563.85
311
12.2
6.6
0.12
0.99
240
6096
300
16032
631.2
1932
76.1
15925
626.99
355
14.0
MT830+/MT1030+