User's Guide

Review Copy 11-6-10
www.JADAKtech.com
ThingMagic Micro Family User Guide 55
• Fluorescent lighting fixtures are a source of strong electromagnetic interference and, if possible, should
be replaced. If fluorescent lights cannot be replaced, keep the reader cables and antennas away from
them.
• Coaxial cables leading from the reader to antennas can be a strong source of electromagnetic radiation.
These cables should be laid flat and not coiled.
Tag Considerations
There are several variables associated with tags that can affect reader performance:
• Application Surface: Some materials, including metal and moisture, interfere with tag performance. Tags
applied to items made from or containing these materials may not perform as expected.
• Tag Orientation: Reader performance is affected by the orientation of the tag in the antenna field. The
ThingMagic antenna is circularly polarized, so it reads face-to but not edge-to.
• Tag Model: Many tag models are available, each with its own performance characteristics.
Multiple Readers
• The reader adversely affects performance of 900 MHz devices. These devices also may degrade
performance of the reader.
• Antennas on other readers operating in close proximity may interfere with one another, thus degrading
performance of the readers.
• Interference from other antennas may be eliminated or reduced by using either one or both of the
following strategies:
• Affected antennas may be synchronized by a separate user application using a time-
multiplexing strategy.
• Antenna power can be reduced by reconfiguring the RF Transmit Power setting for the reader.
NOTE: Performance tests conducted under typical operating conditions at your site are recommended
to help optimize system performance.