User's Manual

12
Placing the Antenna
Antenna placement is critical to ensuring that information is transmitted
to and from tags accurately. Observe the following guidelines when plac-
ing the antenna:
Locate the antenna away from metal objects, microwave ovens,
and other devices that may induce radio frequency interference.
In addition, make sure there are no metallic surfaces between,
or in relative proximity to, the scanner and tag. For additional
placement considerations, refer to “RF Communications” on
page 23.
When reading, the antenna should be placed no more than 60 inches
from the objects bearing tags. When writing, the antenna should be no
more than 22 inches from objects bearing tags
I Tags must reside within the scan field for at least 3 milliseconds for
information to be retrieved from them.
556-EP Manual.P65 1/18/2001, 2:46 PM12