User's Manual

User’s Manual to XCRF-502E Reader

Internal use.only. Any transmission is not

allowed without permission.

Þ Facing the Reader antennas, the electronic tags can be

rotated by 360° in a same plane without influencing the read

distance, when the Reader antennas use circular polarization.

Þ When the plane of the electronic tags is vertical to that of the

Reader antennas, neither polarization mode can enable the

Reader antennas to have communication with the electronic

tags.

Þ The optimal antenna length of the electronic tags is subject to

the non-conductor materials into which they are encapsulated

or embedded. The basic concept is: for an electronic tag

embedded into non-conductor (whose dielectric constant is

usually larger than the dielectric constant in the air, therefore

the effective wave length in the medium is shorter than that

in the air), if its effective electric length is adjusted to the

optimal in the air (its matching read distance to the Reader is

farthest), so the tag antenna’ electric length must be adjusted

to shortening, so as to realize the optimal performance as that

in the air, when it is placed in non-conductor or on substrate;

contrarily; the electric length must be adjusted to extending,

if the effective electric length is adjusted to the optimal in the

non-conductor.

Þ In order to avoid interactive interference of multiple

electronic tags installed on the same object, there must be