NED
SU2025GIG
UME-0025-02
42
5.10
Setting Digital 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 5-10-1 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 5-10-2 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)