13
Placing the Antenna
Antenna placement is critical to ensuring that information is written to
and read from tags accurately. Observe the following guidelines when
placing the antenna:
Locate the antennas away from metal objects, microwave ovens, and
other devices that may induce radio frequency interference. In addi-
tion, make sure there are no metallic surfaces between, or in relative
proximity to, the scanner and tag. For additional placement consider-
ations, refer to “RF Communications” on page 24.
When reading, the scanner’s antenna(s) should be placed no more
than 20 inches from the objects bearing tags. When writing, the
scanner’s antenna should be no more than 4 inches from objects
bearing tags.
Tags must reside within the scan field for at least 3 milliseconds for
information to be retrieved from them.
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Summary of Contents for INSTASCAN S512-C
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