User's Manual

© Copyright 2004-2006 RF Code, Inc. All rights reserved. UM-P2900-R101-20060404.
No copying of this material is allowed without prior written permission. Page 8 of 24.
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USER MANUAL – Mantis™ II 433.92 MHz Reader
To achieve the best receiver diversity:
• Antenna Angle from Reader – It is desirable to have the antennas
positioned at different angles from the Reader.
• Antenna Angle from Each Other – Antennas should be at 90-
degree angles relative to each other. It may be necessary to
experiment with antenna positions to achieve optimum coverage.
• Height – As a rule, the higher a Reader is positioned above the
ground or floor, the better the Reader’s detection range.
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WARNING – Do not allow antennas to overlap. Keep the antennas
separated. Allowing the antennas to overlap reduces the
effectiveness of each antenna.
To minimize RF interference:
• Separation – Maintain a 4-to-6-foot separation between the Reader
antennas and potential RF radiators such as computers, monitors,
printers and electronic office equipment. The local radio environment
can limit the Reader’s effective range.
• Height – Do not operate the Reader on or close to the floor or
ground. Grounded and reflective metallic structures around the
Reader and/or Tags affect the system performance. For best results,
the Reader should be mounted as high as reasonably possible.
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WARNING – Readers should not be positioned close to ceilings as
they act as ground planes.
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TOOLS – Low loss SMA coaxial extension cables may be used to
separate the antennas from the Reader.
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NOTE – Optional antennas that offer diverse receiving properties or
extend the range of the Reader are available for the Mantis™ II
Reader. Contact your Mantis™ II Reader distributor.
Environmental Limits
The Mantis™ II 433.92 MHz Reader is approved for use within the
temperature ranges set forth below.
• Operation: -20 to +70 degrees Celsius.
• Storage: -40 to +80 degrees Celsius.