Avery Dennison RFID - Manual (Page 32)

HowToRFID
Revision: 13 Date: 31 August 2009
Page 32 of 53
Dim. Definition Explanation
LG Horizontal inlay
placement
“x-pos” Horizontal placement of inlay relative to the left edge of the liner – physically to the inside side of the paper path
in the printer. Dimension is given with a +/- 5mm tolerance.
Coupling with the transponder changes across the width of the printer paper path. An adjustment for optimal
coupling is possible by sliding the antenna of the printer. See Table 13 for the system specific limits). But, if inlay
width (distance across the web) is much smaller than the width of the printer’s antenna (100 mm), a pre-
adjustment through proper placement of the inlay inside the label is required. Please note: especially for the
design of narrow size tags (e.g. hang tags) this can become a challenge.
LF Minimum inlay
pitch / distance
“pitch” This distance ensures coupling with the transponder in the current label only. Please note that the distance is
always to the antenna leading edge, not the chip or transponder carrier (inlay base material). Distance is
generally given with a +/-- 1.5 mm tolerance (otherwise see notes).
LD Minimum label
length Minimum length of the label resulting from dimension LA (inlay placement relative to top of label) and the length
of the inlay carrier (base material). Additional backup might be required to ensure a valid label construction
(depending from label converting technology).
OPL RFID operation
position relative
to top of label This distance identifies the “sensitive” area of the transponder which must be located in line with the center of
printer’s antenna for optimum coupling.
Distance is given relative to top of label, as printer requires it in that way.
If a deviating LA dimension is selected the corrected value for dimension OPL can be calculated by OPL = LA +
OPA.
OPA RFID operation
position relative
to start of inlay
antenna
Similar to distance OPL, but given relative to the leading edge of the transponder’s antenna.
This value is required to recalculate OPL if a deviating placement position of the inlay from top of label (LA
value) is used.
Printer settings
Dim. Definition Explanation
OPL RFID operation
position relative
to top of label OPL dimension = parameter “Antenna-Offset” of the EasyPlug #IM command
n/a Power level Power Level setting: up to firmware versions x.33 the printer’s power level was adjusted by
an attenuation value which results in reverse logic (high value = low power, low value = high
power)
Starting with firmware versions x.34 the printer’s power level is adjusted in dBm (a physical
unit for the power of RF fields)
See section 3.1.2.1
4.2.4 Printer specific dimensions and restrictions
Printer Position of the center-line
of the UHF antenna relative
to print head (dot-line) Inlay placement window
(+/- offset from ideal
position) horizontal movement
restriction of the antenna
(across the web)
64-04/05 62 mm +/- 48 mm + 25 mm
64-06 62 mm +/- 48 mm + 50 mm
AP 5.4 46.5 mm +/- 16 mm + 15 mm
ALX 924 / DPM 50 mm depending on dispensing
mode, rewinder etc. + 25 mm
ALX 926 / DPM 50 mm depending on dispensing
mode, rewinder etc. + 50 mm
PEM n/a n/a n/a
Table 13 – Antenna position relative to print head