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Advanced RFID Calibration
Tag Profiler
Read and Write power settings can be optimized using the Tag Profiler. Before running the
Tag Profiler, it is important to ensure that the proper Gap Sensing procedure has been
followed. It is recommended that you calibrate the printer to ensure that gap sensing settings
are correct.
To use the Tag Profiler, first ensure that the tag type that you have selected from the Tag Type
menu or page 3 [GL4xxe] for a list of supported tag types) either matches the tag type you are
about to calibrate or is at least of the same Class and data length (i.e. 64 or 96 bits). Next, check
that Custom Tag is set to Duplicate. The correct defaults will then be set for Custom Tag Class
and Tag (EPC Byte) Length.
Before initiating the calibration cycle, the Tag Profiler can be optimized by setting appropriate
limits on the following four custom entries:
• Custom (Scan) Start Pos. Identifies the starting position of the calibration scan. The default
will start at the Top Of Form (TOF). To avoid inefficient scanning at points far away from the
target tag, set the (Scan) Start Pos within one inch of the center of the physical tag. E.g., if
the center of the tag is physically 76mm from the TOF, set (Scan) Start Pos to 51mm (25mm
(1 inch) before the center of the tag).
• Custom Scan Length. This refers to the distance that the Tag Profiler will scan to determine
the optimum tag position. For improved performance, set Custom Scan Length to 51mm or
less. This will prevent the printer from looking for a tag far beyond its actual location.
• Custom (Cal) Min Power. Sets the lower level that will be tested during calibration. To
speed up calibration, set Custom Min Power to two points lower than the Custom Read
Power that was set prior to initiating calibration.
Introduction to the RFID configuration options