User’s Manual
XC-RF861 Reader
36
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Check if there is any electromagnetic interference between the readers or
other equipment.
8. Short tag reading distance
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Check if the reader frequency setting is correct. If the antenna operating
frequency range is 902.75MHz - 927.25MHz, the hopping point selected
for the reader should not exceed the antenna’s operating frequency range
(902.75MHz - 927.25MHz). Otherwise it will affect the performance of the
reader.
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Check if the RF output power is low. The RF output power is adjustable.
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Check if the polarization direction of the tag and the antenna is compatible.
If the antenna is vertically polarized, the tag must be placed vertically.
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Check if the tag surface is covered with any other materials. If the tag
surface is covered with other material, the material may cause deviation in
the antenna’s frequency and affect the reading effect of the reader. If the
material is metallic, the reader will be unable to detect the tag, as RF signal
is unable to penetrate metal.
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Check the RF cable connecting the reader and the antenna. If the connector
of the RF cable is loosened or broken, RF signal will become very weak
and the reading distance will be affected.
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Check the properties of the tag. Metallic tag should be installed at metal
surface for the tag to function at full capacity. For other types of tag, please
avoid installation near metallic surface.
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Normal aging of tag performance. Due to long term use, the tag perfor-
mance will decline and result in the shortening of the tag reading distance.
However, this will not affect normal usage. Only in the extreme case of ag-
ing where the reading distance becomes extremely close and a replacement
should be considered.
4 Routine maintenance and service
