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C2 Series User Manual Rev. 1.9
The FIR Peak Mode (FIR PEAK)
In this mode the first derivative of the intensity Gauss curve of laser beam profile is calculated.
The position of zero-crossing of first derivative is detected and output with subpixel accuracy (up to
6 subpixels). In this case the threshold AOI_TRSH is used to detect the first rising edge of the derived
intensity signal. Valid values of AOI_TRSH range from 513 to 1023 (Mono16).
More details regarding the operation of the FIR Peak mode can be found in a separate
application note.
AOI_TRSH
Sensor row #
Sensor row #
Zero-Crossing
AOI_TRSH
0
AoiHeight
0
AoiHeight
1023
First Derivative
of Intensity
Intensity
