Printronix T2N series User Manual page 74

Head Auto Calibrate
This option selects whether the printer does a media calibration after a Printhead Open fault.

Enable (factory default). Performs media calibration each time the Printhead Open fault
condition is cleared. The Feed key must be pressed to initiate the calibration.

Disable. No media calibration after Printhead Open fault.
Max Cal. Length
This option specifies the maximum distance to search for a gap or mark before declaring
calibration unsuccessful. Recommended length is 1.5 times the label length of the installed
media.
The factory default value is 10 inches.
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