21

SHUT_HI

Address: 0x06

Shutter Open Time (Upper 8-bits) Register

Access: Read

Reset Value: 0x01

Bit

76543210

Field

S15

S14

S13

S12

S11

S10

S9

S8

SHUT_LO

Address: 0x07

Shutter Open Time (Lower 8-bits) Register

Access: Read

Reset Value: 0x00

Bit

76543210

Field

S7

S6

S5

S4

S3

S2

S1

S0

Data Type:

Sixteen bit unsigned integer.

USAGE:

Units are in clock cycles. Read SHUT_HI first, then SHUT_LO. 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.

Figure 22. Shutter (white paper).

Figure 23. Mean shutter vs. Z (white paper).

0

20

40

60

80

100

120

140

160

Count

0

50

100

150

200

250

300

1.6

1.8

2

2.2

2.4

2.6

2.8

3

3.2

3.4

Distance from Lens Reference Plane to Tracking Surface - Z (mm)

Avg-3sigma

Avg

Avg+3sigma