Printronix T5204R Administrator's Manual page 130

Chapter 3
CALIBRATE CTRL
Paper Out Thresh
This menu item selects a value that, when exceeded by the output of the
media sensor, is recognized by the printer as a paper out condition. When
Auto or Manual Calibrate is performed, the value displayed is equal to the
paper out threshold value set by this procedure. If running the procedure does
not provide a reliable paper out detection, e.g., when using non-standard
media, the Paper Out Thresh value can be manually set to the desired value.
The range is from 0000 to 1023.
Paper Out Sensor
Selects which type of media sensing, Transmissive or Reflective, will be used
to detect a paper out condition. The printer automatically selects the type of
sensing based on the Gap/Mark sensing selected (see Table 6 on page 127).
NOTE: Whenever you select Transmissive, you must position the upper
The factory default is Transmissive.
Manual Calibrate
Manual Calibrate is another method of improving the printer's media sensing
and is only used when Auto Calibrate has failed or the Gap/Mark Threshold or
Paper Out Threshold values derived from Auto Calibrate do not improve the
media sensors' gap or mark sensing capability.
To initiate Manual Calibrate, press ↵ when "Manual Calibrate" displays under
the CALIBRATE CTRL menu. You will then be prompted for the remaining
steps.
During the last stage of Manual Calibrate, the printer uses the statically
derived values, advances media, stops at the Top-of-Form position, and
momentarily displays the Sensed Distance. This process takes longer than
Auto Calibrate, and the end result is a change to the Gap/Mark Threshold,
Paper Out Threshold, and Sensed Distance values that the printer will use.
These value changes take effect immediately within the current configuration
menu.
Manual Calibrate is completed successfully when the displayed Sensed
Distance correctly matches that of the installed media. When Gap is selected,
the Sensed Distance should match the length from the trailing edge of one
gap to the trailing edge of the next gap (or one label + one gap). When Mark is
selected, the Sensed Distance should match the length from the leading edge
of one black mark to the leading edge of the next black mark.
Manual Calibrate supports label lengths up to 24 inches.
130
media sensor directly over the lower media sensor (see "Positioning
the Media Sensors" on page 54).
Example: "REMOVE RBN&MEDIA/Press Enter" or
"LOAD RBN ONLY/Press Enter" etc.