20

Shutter_Upper

Address: 0x06

Access: Read

Reset Value: Undefined

Bit

765

4

3

2

1

0

Field

Shutter_Lower

Address: 0x07

Access: Read

Reset Value: Undefined

Bit

7

654

3

2

1

0

Field

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

20

30

40

50

60

70

80

90

100

110

120

Count

figure 23. Shutter values (white paper)

Mean Shutter vs Z (white Paper)

0

50

100

150

200

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

Delta from Nominal Focus (mm)

Figure 24. Mea n Shutter vs. Z (white paper)