Printronix SL4M - Manual (Page 89)

SENSOR SETUP Submenus
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• Enable . When the leading edge of a gap is detected, the printer ignores
the first 90% of the gap length value specified in the Gap Length menu
option. The result is that cross perforations or unusual media
discrepancies within the gap are filtered out, allowing the printer to
reliably detect the actual leading edge of the next label and use it as the
TOF position.
NOTE: If Gap Windowing is enabled, the Gap Length menu must be set
correctly.
Gap Length
Gap Length is the actual length (height) of a label gap measured in .01 inch
increments. The range is 0.05 to 1.00 inches.
The factory default is 0.12 inches.
NOTE: If Gap Windowing is set to Enable, you must enter the correct Gap
Length. If the Gap Length is too long, the image will shift down from
the leading edge (TOF) of the label.
Cal in Peel Mode
This option allows you to perform a calibration (Run Auto-Cal or Pwr Up
Auto-Cal) in Peel-Off Media Handling mode.
• Disable (factory default). The printer will not permit calibration and a
“CANNOT CALIBRATE/Disable Peel-Off” message will briefly display.
Additionally, if Pwr Up Auto-Cal or Head Auto-Cal is enabled, the printer
will not perform calibration at power up or when the head is closed.
• Enable . Run Auto-Cal can be performed from the front panel, and if the
Pwr Up Auto-Cal option is enabled, calibration will be performed at power
up.
NOTE: Calibration in Peel-Off mode does not stop and wait for you to remove
peeled labels. Therefore, be prepared to remove the labels as they
are automatically peeled.
Min Calib Delta
Minimum Calibrate Delta changes the minimum threshold value the sensor(s)
require to detect the difference between the label and a gap, notch, hole or
black mark. This allows bolder gaps (such as notches or holes) to be used as
the TOF while intermediate gaps (liner) can be ignored. Increasing the Min
Calib Delta makes the sensor(s) less sensitive to intermediate gaps and
noise. Decreasing the Min Calib Delta makes the sensor(s) more sensitive for
detecting gaps on low contrast media, where there is very little difference
between the label and the gap (liner).
The range is 012 - 050. The factory default is 20.