the eyetracker calibration is not working

• First of all, check if the eyetracker produces a correct signal:
  • Video eyetracker:
    • Is the image of good quality?
    • Is the eyetracker software able to fit the pupil correctly?
    • Do you see an eye position trace for all relevant gaze directions?
• Is the voltage of the adjusted eye, produced by the eyetracker, connected to the eye X/Y connectors of the nrec data acquisition box?
• Is nrec getting any valid data? Try to activate "raw data" below the eye position panel to display the acquired voltages.

• Did you select the menu entry nrec - reset calibration before starting the calibration experiment?