You can set the printer to perform an auto calibration (CALIBRATE) or a short calibration (SHORT CAL) using the POWER UP ACTION or HEAD CLOSE ACTION parameters.
CALIBRATE—Adjusts sensor levels and thresholds, determines the label length, and feeds the media to the next web.
SHORT CAL—Sets the media and web thresholds without adjusting sensor gain, determines the label length, and feeds the media to the next web.
See Power-Up Action or Head-Close Action in System Menu for details.