3
Eagle Eye Direct
2. E
AGLE
E
YE
D
IRECT
H
ARDWARE
C
OMPONENTS
This section contains a description of the hardware components that make up the Eagle Eye Direct
system.
2.1 Readers
Readers receive signals from tags and convert them into electrical signals. There are two reader types,
Infrared (IR) readers and Radio Frequency (RF) readers.
2.1.1 IR Reader
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Required for systems using Versus Technology
active infrared tags.
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Receives IR signals from IR and IR/RF tags.
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Converts IR signals into electrical signals.
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360 degree horizontal coverage.
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180 degree hemispherical vertical coverage.
2.1.2 RF Reader
•
Required for systems using Versus Technology
active radio frequency tags.
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Operates at 433.9 MHz receive frequency.
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Receives RF signals from RF and IR/RF tags.
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Converts RF signals into electrical signals.
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50 feet read range.
2.2 Tags
Tags are worn by personnel or attached to equipment. Tags send IR (infrared), RF (radio frequency),
or both IR and RF signals to the readers. This signal contains the “signature” that identifies the tag.
Motion, timing, battery state, and auxiliary information are all included in the signal.
Warning!
A low battery can affect system performance. Change low batteries at first
indication.
2.2.1 A Discussion about Active Tags
Most Versus Technology tags are “active”, meaning they contain a battery and they transmit their
signature or ID number at regular intervals. For example, the Versus Infrared “Locator” tag transmits
its ID every 3.5 seconds when the tag is in motion. If the tagged item remains motionless for a period,
the tag will reduce its transmission rate to every 2.5 minutes. This is to conserve power consumption,
which extends the life of the battery, and to reduce unnecessary transmission signals.
