NED
UME-0111-01
RCDL4K8GE
79
4.6 Setting Offset
In the diagram below, the horizontal axis indicates the volume of light 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 4-6-1 Saturation Exposure and Dark Current Output
By setting the offset, you can set the Y-intercept arbitrarily. DF shows the digital
offset value. The gradients of lines do not change.
See section 4.2.5.3 for setting Offset.
Figure 4-6-2 Offset Adjustment
◆
Adjust gain and offset to meet your system’s requirements.
Dd
Fs
Se
Volume of Light
(lx
・
s)
Output
Fs : Saturation Output
Dd : Dark Current
Se : Saturation Exposure
Output
DF : Offset Value
DF
Volume of
Light
(lx
・
s)
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