User's Manual

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LT‐D‐0211rev16
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Page|39
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3.7 Tags
3.7.1 General
TheLogiTracktagsaresmallandsophisticatedtransceivers.
ALogiTracktagistypicallydormantuntil1ofthefollowinghappens:
1. ThetagisexcitedwhenenteringaRF‐ZonegeneratedbytheLogiTrackinfrastructure(Base‐
stations or exciters). This RF‐Zone is created using a signal in 125
 KHz, which the tag
receives. As a result, the tag will wake‐up, and transmit over UHF channel (433 MHz) its
uniqueidentityandtheidentityoftheRF‐Zoneitjustenteredinto.
AftersendingthemessageovertheUHFchannel,theGatelocatorisabletoexchangedata
withthetagthroughdirect,bi‐directionalcommunication.
2. The tag takes the decision to send a message over theUHF band due to internal decision
(usuallysensor/timerbased),oruserinteraction.Forexample:
a. Theuserpressedabuttononthetag
b. Thetemperaturesensedbythesensorexceed
thethresholdandrequiresraisingan
alarm
c. Motionwasdetectedbythesensor
d. Tampering/removalwasdetectedbythesensor
Thereareseveraltagoptions–differenttagelectronicsindifferentplasticenclosure.Everytagcanbe
usedinanyapplicationwhereitdeliverstherequiredperformancesandoperability,
yetthemajority
wasdesignedtoanswerspecificapplications.
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