NED
XCM6040SAT4 UME-xxxx-00
40
40
4.9
Setting Offset
In the figure below, the horizontal axis indicates the amount of incident and
vertical axis indicates the output.
Fs shows the output at saturation. Dd shows the output at darkness. (Both
Fs and Dd are digital.) Se shows for the saturation current, or the amount of
exposure when the output saturates.
Figure 4-9-1 Saturation Exposure and Dark Current Output
By setting the offset, you can set the Y-intercept arbitrarily. DF shows the
digital offset value. The slopes of lines do not change.
Figure 4-9-2 Offset Adjustment
Adjust amount of offset in accordance with the requirements of your camera
system.
Ｄｄ
Ｆｓ
Ｓｅ
Amount of Incident
Light (lx
・
s)
Output
Fs : Saturation Output
Dd : Dark Current
Se : Saturation Exposure
Output
DF : Offset Value
Ｄ
Ｆ
Amount of
Incident Light
(lx
・
s)
