Chapter
3
Reference Manual
Ruler E
Configuring the Ruler
3.6.2
Horizontal Max (HorMax)
The horizontal max measures intensity and range values using maximum intensity. This
algorithm is measuring range data with less accuracy than Horizontal threshold. Informa-
tion on maximum speed is found in the figure that follows after the list of parameters and
the height resolution is 1 or ½-pixel.
Input parameters
Start row
The first sensor row to acquire data from. 0 – 511. Default value
0.
Number of rows
The number of rows to acquire algorithm data from. 16 – 512.
Default value 512.
Exposure time
The time that the sensor is exposed to light. (microseconds)
Gain
The amplification of the analog sensor data before AD conver-
sion:
1 = No amplification
3 = 3 times
4 = 4 times
Threshold
The noise level, i.e. the minimum light level to consider as a
valid laser position. 0 – 255. Note, that a low setting of the
threshold might increase the amount of noise.
Sub pixeling
The resolution to use when computing the mid-position of the
first and last position that represents the maximum value.
0 = Resolution of 1 pixel
1 = Resolution of ½-pixel
Ad bits
Number of bits to perform AD conversion of sensor data on.
5 – 8. Default 7.
The acquisition speed of a configuration using the Horizontal Max component depends
mainly on the current settings for the ROI and AD bits. The maximum speed at 5 – 8 bit AD
conversion is shown in the following figure.
0
1000
2000
3000
4000
5000
6000
7000
8000
0
100
200
300
400
500
HorMax Maximum Profile Speed
Profiles per second
5 AD bits
6 AD bits
7 AD bits
8 AD bits
5 AD bits, no subpix
6 AD bits, no subpix
5 AD bits
6 AD bits
7 AD bits
8 AD bits
5 AD bits, no subpix
6 AD bits, no subpix
Number of rows
24
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