NEC MT830 - Manual (Page 20)

20
37
38
Standard Zoom Lens (Wide)
α
β (sin= α )
γ
(cos=
α
)
Screen Size
H–Width
4 : 3 Diagonal
A
C
D
E
Degree
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
9.0
0.16
0.99
32
813
40
1572
61.9
1552
61.1
-34
-1.32
339
13.3
8.9
0.15
0.99
48
1219
60
2400
94.5
2371
93.4
-4
-0.16
462
18.2
8.8
0.15
0.99
56
1422
70
2814
110.8
2781
109.5
10
0.41
523
20.6
8.8
0.15
0.99
64
1626
80
3228
127.1
3190
125.6
25
0.99
585
23.0
8.8
0.15
0.99
72
1829
90
3642
143.4
3600
141.7
40
1.57
646
25.4
8.7
0.15
0.99
80
2032
100
4056
159.7
4009
157.8
55
2.15
708
27.9
8.7
0.15
0.99
96
2438
120
4884
192.3
4828
190.1
84
3.30
831
32.7
8.7
0.15
0.99
120
3048
150
6127
241.2
6057
238.4
128
5.03
1016
40.0
8.7
0.15
0.99
144
3658
180
7369
290.1
7285
286.8
172
6.77
1201
47.3
8.6
0.15
0.99
160
4064
200
8197
322.7
8104
319.1
201
7.92
1324
52.1
8.6
0.15
0.99
192
4877
240
9853
387.9
9742
383.5
260
10.23
1570
61.8
8.6
0.15
0.99
216
5486
270
11096
436.8
10970
431.9
304
11.96
1755
69.1
Standard Zoom Lens (Tele)
INSTALLATION
8.6
0.15
0.99
240
6096
300
12338
485.7
12199
480.3
348
13.70
1939
76.4
α
β (sin= α )
γ (cos= α )
Screen Size
H–Width
4 : 3 Diagonal
A
C
D
E
Degree
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
6.9
0.12
0.99
32
813
40
2041
80.4
2027
79.8
-34
-1.32
339
13.3
6.8
0.12
0.99
48
1219
60
3118
122.7
3096
121.9
-4
-0.16
462
18.2
6.8
0.12
0.99
56
1422
70
3656
143.9
3630
142.9
10
0.41
523
20.6
6.8
0.12
0.99
64
1626
80
4194
165.1
4165
164.0
25
0.99
585
23.0
6.7
0.12
0.99
72
1829
90
4732
186.3
4699
185.0
40
1.57
646
25.4
6.7
0.12
0.99
80
2032
100
5270
207.5
5234
206.1
55
2.15
708
27.9
6.7
0.12
0.99
96
2438
120
6346
249.9
6303
248.2
84
3.30
831
32.7
6.7
0.12
0.99
120
3048
150
7961
313.4
7907
311.3
128
5.03
1016
40.0
6.7
0.12
0.99
144
3658
180
9575
377.0
9511
374.4
172
6.77
1201
47.3
6.6
0.12
0.99
160
4064
200
10651
419.3
10580
416.5
201
7.92
1324
52.1
6.6
0.12
0.99
192
4877
240
12804
504.1
12718
500.7
260
10.23
1570
61.8
6.6
0.12
0.99
216
5486
270
14418
567.6
14322
563.8
304
11.96
1755
69.1
6.6
0.12
0.99
240
6096
300
16032
631.2
15925
627.0
348
13.70
1939
76.4
MT830+/MT1030+