Considerations In Reading Injectable Transponders Or Electronic Eartags - Identipet MPR HS 5900L F Manual

4 Mini Portable Reader User Manual

1.3 Considerations In Reading Injectable Transponders Or Electronic Eartags

The maximum distance for reading the transponder (ID tag) depends on the
orientation of the transponder with respect to the reader antenna.
The normal read distance for DestronnFearing's 11-mm (small, model
TX1400L) injectable transponder is about 10cm (4 inches); for the 20-mm
(medium, model TX1410L1) injectable transponder, about 23cm (9 inches); for
the 28-mm (large, model TX1408L1) injectable transponder, about 33cm (13
inches). Read distance for the INFOdex electronic eartag will be the same as
for the medium injectable transponder (23cm, 9 inches). These read
distances are in a benign noise environment with optimal orientation of the
transponder to the reader. Ranges will be greater than these distances with
newer transponder models.
The Mini Portable Reader detection range is at its greatest when the transpon-
der's long axis is facing toward the reader's antenna (when the end of the
transponder's long axis is facing toward the antenna). When the transponder
is read from the side (when the transponder's long axis is parallel to the
reader's antenna), the best read distance is achieved when the centre of the
antenna is not directly over the transponder, but rather to one end or the other.
If you don't know the exact location or orientation of the transponder (as when
the transponder is injected into an animal), move the antenna over the
general area in overlapping circles from different angles until the tag ID code
is read.
Since the transponder is energized by an electromagnetic field, large amounts
of metal between the reader and transponder will reduce the read range, even
to the extent that no tag ID code will be found. Also, if more than one
transponder is in the read zone, it is possible that neither will be read or that
some loss of reading distance will occur. Computer terminals may also
drastically reduce the read range of the reader. If possible, turn these other
devices off until you are finished reading tag ID codes, or move away from
them while you are reading ID codes.