Specifications

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Inspection Sensors
Sensor Threshold
The sensor threshold slider sets the level below which a sensor fails and
above which a sensor passes. In many cases, the default value works
well. If you adjust the slider, set it so that it is mid-way between the
level for good parts and bad parts.
If you check Invert, the Sensor passes with levels below the threshold
and fails with levels above the threshold.
Modifying a Sensor
To change the location of a sensor, click and drag on the sensor border.
To resize a sensor, click and drag on the handle on the sensor border.
Checker automatically re-trains a Pattern sensor whenever you move or
resize it.
Advanced Sensor Tuning
Brightness and Contrast Sensors have controls that let you tune the
sensors to maximize the reported difference between good and bad
parts.
1 Brightness Sensor: Use when the feature of a good part is much lighter or
much darker than the same feature of a bad part.
2 Contrast Sensor: Use when the feature of a good part has more or less
distinct dark and light areas than the same feature of a bad part.
3 Pattern Sensor: Use when the feature of a good part has the shape you
want and the same feature of a bad part does not, or when inconsistent
lighting conditions cause Brightness or Contrast sensors to fail.
Inspection Sensors evaluate part of a Checker image to determine if a
feature is present or not. There are three types of inspection sensors:
1 Brightness Range: Two sliders set the range
of brightness levels used by the sensor.
2 Contrast Sensitivity: Slider increases or
decreases sensitivity to contrast differences.