HEIDENHAIN IK 5494-2D - Manual (Page 386)

364 QC5200 Series User’s Guide
Probable cause #3
• The part illumination or video focus is not properly adjusted.
Recommended solution #3
• Adjust the part illumination system or video focus.
Problem
The auto focus does not work properly
Probable cause #1
• Auto focus is intended as a final fine focus function, but is being asked to provide coarse focus
adjustments.
Recommended solution #1
• Confine the use of the auto focus function to final fine focus tasks.
Probable cause #2
• The part lighting is inadequate for the auto focus function to be effective
Recommended solution #2
• Increase the part lighting
Probable cause #3
• The part contrast is inadequate for the auto focus function to be effective
Recommended solution #3
• Position the probe over a higher contrast area
Probable cause #4
• The video probes are not properly calibrated
Recommended solution #4
• Calibrate the video probes using the material contained in Chapter 4: Probes. Chapter 4: Probes.