Printronix T5000 Series Quick Reference Manual page 45

Calibrating the Sensitivity of the Top-of-Form Sensor
Any changes to sensor parameters which occur as a result of the
Paper Calibrate procedure, whether this procedure is performed
automatically or manually, take effect immediately within the
current configuration menu, but are not automatically saved. If
Paper Calibrate is done again the new values will overwrite the
previous values for the current menu.
You can save the new values into non-volatile memory (menus 1-8
only) by using the Save Configuration procedure. If the current
menu in use is the Factory menu, the values will take effect but will
not be saved into memory and will be lost when the printer is
powered off.
When Paper Calibrate has completed successfully, the Sensed
Distance selection in the MEDIA CONTROL menu will display a
distance in inches based on the media type in use:
•
transmissive media = the label length plus one gap length
•
reflective media = the distance from the leading edge of
one black stripe to the leading edge of the next black stripe.
The Sensed Distance value can not be changed manually and is
updated only as a result of the Paper Calibrate procedure. The
factory default value of Sensed Distance is 0.00 inches.
If Paper Calibrate fails to determine the proper values and ends
with a fault message displayed (GAP NOT DETECTED or LOAD
PAPER), you can either try it again or manually change the Gap
Threshold and/or Paper Out Threshold values.
Once the correct values are determined and the Label Length
setting in the MEDIA CONTROL menu is equal to (or slightly less)
than the physical label length, depress the FEED key to advance
media and determine if it consistently stops at the correct TOF
position each time.
45