User's Manual

27
constant is usually larger than that of the air, and thus
its effective wave length is shorter than that in the air),
if its effective electrical length is adjusted to the
optimal length in the air (the corresponding reading
distance to the reader-writer is the longest), and when
the antenna is packed in the non-conduct material, the
electrical length of the antenna should be shortened to
parallel the optimal effect in the air. On the contrary, if
the electrical length of the antenna is adjusted to the
optimal, then its optimal electric length in air should
be increased.
ø To avoid the mutual interference between multiple
electronic tags installed on one object, any two
electronic tags should keep enough distance to each
other. The interference between multiple electronic
tags will occur when the distance between two
electronic tags is less than 10cm and their distances to
the antenna are equal.
ø Keep the bare or unpacked electronic tags away from
chemicals. Some chemicals, such as alcohol, will not
affect electronic tags in the normal temperature, but
will somewhat cause corrosion when the temperature
gets higher,