PixArt Imaging Inc.
ADNS-7550 Integrated Molded Lead-Frame DIP Sensor
Shutter_Upper
Address: 0x07
Access: Read
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
S
S
14
S
13
S
12
S
11
S
10
S
9
S
8
15
Shutter_Lower
Access: Read
Bit
Address: 0x08
Reset Value: 0x64
7
6
5
4
3
2
1
0
Field
S
S
6
S
5
S
4
S
S
2
S
1
S
0
7
3
Data Type: Sixteen bit unsigned integer.
USAGE: Units are clock cycles. Read Shutter_Upper first, then Shutter_Lower. They should be read consecutively. The
shutter is adjusted to keep the average and maximum pixel values within normal operating ranges. The shutter value
is automatically adjusted.
Shutter Value (White Paper)
At Z=0mm; Circle Diameter=7.5"; Speed=6ips
80
70
60
50
40
30
20
10
0
1
47 93 139 185 231 277 323 369 415 461 507 553 599 645 691 737 783 829 875
Count
Figure 24. Shutter Values at 800cpi (White Paper)
Mean Shutter vs Z (White paper)
At Z=0mm; Circles Diameter=7.5"; Speed=6ips
600
550
500
450
400
350
300
250
200
150
100
50
Avg-3sigma
Avg
Avg+3sigma
0
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
Delta from Nominal Focus (mm)
Figure 25. Mean Shutter vs. Z (White Paper)
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
23
PIXART [ PIXART IMAGING INC. ]
