General article: "Calibration failed” errors during lab scanner calibration

Common calibration errors

During lab scanner calibration there may be various errors, some examples can be found below:

1. "Calibration failed. Global positioning not possible. The dot plate is obscured to the cameras. Check saved images" 
2. "Calibration failed. Global Positioning not unique. Check saved images"
3. “Stream command failure WaitForImageSet timed out”

4. Error message "Exception: WaitForAxesStop timeout for [axis]" appears during scanning or calibration and mentions one of the scanner's axes, e.g.:

5. Error message "Stream Command failure. WaitForImageSet returned time out" appears during scanning or calibration

Affected scanner models and software versions: any model, any version.

Possible causes: wrong axis position; axis malfunction; faulty calibration object.

Troubleshooting steps

• Turn the scanner off and on
• Check if USB connection meets the requirements detailed in the article “USB connection requirements for 3Shape lab scanners”
• Try another USB port
• Replace the scanner’s USB cable (in the case of an F8 scanner – the ethernet cable)
• Connect the scanner to a different PC and check if the issue is replicated there.
• Make sure the drivers are installed correctly and updated according to article “How to find 3Shape lab scanner in Device Manager and update scanner's drivers”.
• Review the steps from article “What to consider when calibrating Lab Scanners” and make sure all recommendations are being followed, as well as correct positioning of the calibration object.
• Make sure that the plastic cover has been removed from the calibration object.
• Check if the calibration object (dot plate) is in good conditions (no smudges, no visible damage such as scratches, or stains/dirt). If able, try using a different calibration object.

If the problem is still not fixed: contact support@3shape.com for further assistance.