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DPM CALIBRATION
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11 DPM CALIBRATION
11.1 PRE CONFIGURATION
Before performing DPM Calibration the reader should be pre-calibrated using the Grade A
test chart.
In addition there are several factors that require attention in order to produce the best
decoding results for DPM code reading applications.
1. The best reading results occur in static applications (no code movement during image
acquisition).
2. When using internal illumination, reduce skew angle to minimum to allow uniform lighting
on the code surface.
3. The code should be placed as close as possible to the center of the FoV.
4. Reduce reading distance to reduce ambient lighting interference.
5. The best internal illumination chain combination in part depends on the reading distance.
More light is applied to the surface at closer distances.
11.2 DPM AUTOLEARN
DL.CODE provides a DPM Autolearn Calibration tool to help find the best combination of
parameters for DPM applications. This tool is sufficient for many DPM applications, however
some particularly difficult applications may be improved by some manual calibration fine
tuning.
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