User's Manual

User’s Manual to XCRF-502E Reader
Internal use.only. Any transmission is not
allowed without permission.
41
Signal interference is the RF signals causing interference during
the information exchange between the Reader and the electronic tags.
Signal interference can seriously weaken the Reader's capacity of
reading the data of the electronic tags.
The sources of interfering signals can be:
Þ RF systems, such as RF local-area network, and adjacent
interactive identification system;
Þ The RF signals from safety gates, garage doors and other
devices;
Þ Other RF radiation sources.
These interfering sources’ impact can be diminished or
neutralized by adjusting the installation locations of the Reader and the
antennas.
The Reader system’s performance (exchanging data information
with electronic tags) will be greatly weakened if RF interference or
noises exist. At any time, the Reader can only “receive” one signal,
unable to distinguish unexpected “noises” and expected “useful RF
signals”.
7.3.2 Signal Attenuation/Reflex
Signal attenuation is the natural attenuation of signal strength
occurring with distance, and the attenuation of signal strength caused
by barriers in its transmission path.