Printronix T2N - Manual (Page 75)

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Media Sensor
The user selects the type of media loaded in the printer. The printer adjusts the sensor algorithm
depending on the type of media. The choices are Gap, Black Mark, and Disable. The factory
default is Gap.
Sensor Intensity
This option is to set the emitting intensity of the gap sensor or black mark sensor. The range for
the gap sensor is 0-7 and the black mark sensor 0-3. This field is read only. The value is filled in
after the calibration. The Sensor Intensity can be changed in the Calibrate Sensor operation.
Threshold Detection
The threshold is used when detecting the difference between gap and label. The printer uses the
threshold to determine the label gap size and top of form.

Manual. This selection can be used when the label has preprinted image or the label has
a very thin liner. If the label height and gap are entered in the Auto Calibration, the
Threshold Detection is changed to Manual.

Automatic (factory default). The printer will automatically figure out the right value for
calibration.
Gap Size/Black Mark Size/Disable Size
Gap size defines the distance between the bottom edge of one label to the top edge of the next
label. This value is filled in when the calibration is completed. The value can be changed if it is
known to the user. If the value is changed after the calibration, the new value is used for the gap
sensing during printing.
Gap Offset/Black Mark Offset/Disable Offset
The offset is used to move the starting image from the top of form. The range is + and - of the
label length.
Sensed Distance
This value is read-only and set upon completing the calibration procedure (see Calibrate Sensor
on page 96). It represents the distance sensed between the TOF of one label to the TOF of the
next label. The Sensed Distance varies based on different media types:

Die-cut labels. Measurable length of the removable label (leading edge to trailing edge).
This does not include the liner material or gap.

Tag Stock with notches or holes. Measurable length from the trailing edge of one notch
or hole to the leading edge of the next notch or hole.

Tag Stock with black marks on underside. Measurable length from the middle of the
leading edge of one black mark to the middle of the next black mark. Unlike other gap
types of media, the printer is able to print over the top of a black mark, so label length is
the size of one black mark plus the length of the media between black marks.
Power Up Action
This menu is used to determine how the engine will synchronize with the media upon power-up.
There are three options:

Auto Calibrate (factory default). When the printer is first powered on, it will complete its
initialization and then perform an Auto Calibrate.

Seek TOF. Moves the media to TOF at power up provided that the user has already
calibrated media using gap/mark sensor. A seek to TOF will not be done when the
Gap/Mark Sensor is set to Disable.

Disable. No movement at power up.