NED
XCM6040SAT2 UME-0027-03
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4.10
Setting Offset
In the figure below, the horizontal axis indicates the amount of incident light
and the 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 the saturation current, or the amount of
exposure when the output saturates.
Figure 4-10-1 Saturation Exposure and Dark Current Output
By setting the offset, you can set the Y-intercept arbitrarily. DF shows the
digital offset value. The gradient of the line does not change.
Figure 4-10-2 Offset Adjustment
Adjust amount of offset in accordance with the requirements of your camera
system.
Output
DF : Offset Value
ＤＦ
Volume of
Light
(lx
・
s)
Ｄｄ
Ｆｓ
Ｓｅ
Amount of Incident
Light (lx
・
s)
Output
Fs : Saturation Output
Dd : Dark Current
Se : Saturation Exposure
