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參數(shù)資料
| 型號(hào)： | SDA9255 |
| 廠商： | SIEMENS AG |
| 英文描述： | SRC-Scan Rate Converter SDA9255 |
| 中文描述： | 鋼骨混凝土掃描頻率轉(zhuǎn)換器SDA9255 |
| 文件頁數(shù)： | 23/45頁 |
| 文件大小： | 225K |
| 代理商： | SDA9255 |
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SDA 9255
Semiconductor Group
21
1998-02-01
2.6
The user can choose 17 different zoom factors and 37 pan factors. Every zoom factor
can be used without considering other register values, but on the other hand the pan
factor is very much dependent on the zoom factor. So be careful in choosing the pan
factor. In the following table the zoom factor (subaddress 0F
H
,
see description of
I
2
C Bus
) and the corresponding visual zoom of the input field is shown. In the third
column the required number of input lines is shown, when the number of displayed
output lines is 288. The fourth column shows the allowed value PAN value (subaddress
10
H
,
see description of
I
2
C Bus
) and the last column the PAN register value for vertical
centre position.
Digital Vertical Zooming and Panning
Table 5
Table of Zoom Factors and Panning Factors
Dependent on the zoom factor the SDA 9255 requires a certain number of input lines of
a field.
Zoom
Visual Zoom
NoIPL
(NoOPL = 288)
288
279
270
261
252
243
234
225
216
207
198
189
180
171
162
153
144
Panning Range
PAN
0
0 ... 2
0 ... 4
0 ... 6
0 ... 9
0 ... 11
0 ... 13
0 ... 15
0 ... 18
0 ... 20
0 ... 22
0 ... 24
0 ... 27
0 ... 29
0 ... 31
0 ... 33
0 ... 36
Centre Panning
PAN
0
1
2
3
4
5
6
7
8
10
11
12
13
14
15
17
18
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
1.03
1.06
1.10
1.14
1.18
1.23
1.28
1.33
1.39
1.45
1.52
1.6
1.68
1.77
1.88
2.0
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