Printronix T2N - Manual (Page 96)

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Calibrate Sensor
Printer calibration ensures the gaps, holes, notches, or black marks are detected properly. Calibration
should be performed on every printer power-up and each time the media type is changed. This
section will review both Auto Calibration and Manual Calibration techniques. Alternatively, Auto
Calibration can be performed without the Configuration Utility by powering the printer off and back on
again while holding the PAUSE key on the front panel.
Start the calibration process by clicking the “Calibrate Sensor” button as shown in Figure 24. The
Sensor Calibration window opens, containing three sections: Media Type, Manual Setup, and Auto
Calibration.
Figure 24. Printer Calibration
Media Type
First select the Media type: Gap, Black Mark, Continuous, or Auto Selection. If
the label is a continuous form, the calibration function checks for the
transparency of the paper. Auto Selection can be used when the user has
unique media that is not easily categorized as one of the previous selections.
Auto Selection may result in a longer calibration process.
Auto Calibration
Auto Calibration is the easiest method of calibration for standard media types. E ntries for “Paper
Height” and “Gap” are not required but can be used with challenging media. If values are entered, the
T2N printer will use them during the calibration process. These values will be reflected in the
appropriate Media/Sensor tab parameters.
Upon clicking the “Calibrate” button, the printer will calibrate (feed) up to the
value specified in “Max Cal. Length” (in Media/Sensor tab) or 10” by default.
If calibration is successful, the parameters “Media Sensor”, “Sensed Distance”,
“Label Length”, and “Gap Size” (or “Black Mark Size”) will be updated in the
Media/Sensor tab. If unsuccessful, the printer status LED will flash. Use "Get
Status" to obtain the printer status. "Calibration Error" will display in the printer
box status. The
“Sensed Distance” value is the actual distance between gaps or
black marks. When the media contains black marks, the printer sets middle of
the mark as TOF and will stop at the tear bar in the middle of the black mark.