Printronix SL4M - Manual (Page 88)

88
Chapter 4 SENSOR SETUP Menu
Head Auto-Cal
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.
• Disable . No media calibration after Printhead Open fault.
NOTE: 1. A calibration will not be done if there is print data pending (data in
buffer) when the head open fault is cleared, and Head Auto-Cal is
enabled. If the printer is in Peel mode, the calibration will not be done
unless “Cal in Peel Mode” is set to enable.
2. For the SL4M Short Pitch RFID printer, the default is Disabled.
Online Auto-Cal
The options for Online Auto-Cal are:
• Disable (factory default).
• Enable . Whenever the printer is brought online, it automatically performs
an Run Auto-Cal (see “Run Auto-Cal (Auto-Calibrate)” on page 85). Once
the Run Auto- Cal is complete, the printer momentarily displays the
Sensed Distance determined by the Auto Calibrate and then resumes
printing any pending jobs.
NOTE: A calibration will not be done when there is data in the buffer and
when Error Recover (in MEDIA SETUP menu) is enabled
(see page 68). If the printer is in Peel mode, the calibration will not be
done unless “Cal in Peel Mode” is set to enable.
Gap Windowing
This feature compensates for any early falling edges or spurious peaks and
troughs that may appear within the gap length in media. These edges or
peaks and troughs can cause unreliable detection of the leading edge of the
next label (top-of-form). Use Gap Windowing to resolve the following
problems:
• Loss of one or more complete (serialized) labels.
• Start of an image printed in the middle of a gap, especially with fanfold,
perforated media.
• Top part of an image lost when printing in head-first orientation.
The options for Gap Windowing are Disable and Enable:
• Disable (factory default). When the leading edge of a gap is detected, the
printer continuously looks for the leading edge of the next label and uses
it as the TOF position. Perforations or unusual media discrepancies within
the gap can cause inaccurate TOF detection.