User Manual

UHF Integrated RFID Reader Manual Guangdong Sygole Intelligent Technology Co.,Ltd
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3.2.4 Reading distance in the application system
The effective distance which a reader reads a tag is related to many factors.
Including but not limited to the following conditions:
 Reader power.In theory, the greater the power, the farther the effective
distance of reading the tag.
 Tag.Tags of different types, sizes, and production qualities have different
reading distance.
 Installation environment.When the reader is in an electromagnetic wave
reflective environment or the tag is mounted on a different material surface,
the read distance of the reader varies.
 Read and write operations. The write operation of the reader requires more
power than the read operation, so the write operation distance is much closer
than the read operation distance. The following figure shows the read/write
distance comparison of the tags in the reader antenna field.
Fig 3.2.4 Distance comparison
Therefore, the installation environment of the reader is as close as possible to
the implementation specification,in order to improve the reliability and
effectiveness of the reader reading the tag. On the other hand, adjacent readers
should be kept above the minimum safe distance and properly adjust the reader
transmit power to reduce mutual interference between readers.
3.3 Tag installation environment specification
Tags with different attributes have different installation environments.For
example, when the reader parameters are same, the distance of anti-metal tags
mounted on the metal surface much farther than the non-metallic surface.
The tags are divided into two categories: anti-metal tags and non-metal tags.
Non-anti-metal tags are recommended to be installed in non-metallic
environments. If it is unavoidable to install in a metal environment, please refer
to the following implementation rules:
Mounting on metal surface ——Non-anti-metal tags require a buffer to be reserved,
and anti-metal tags can be directly mounted to metal surfaces;
Buffer——Refers to the distance from the tag to the metal surface
Ideal distance
Read distance
Write distance