USER MANUAL
BTX Ankle Tether
TABLE OF CONTENTS
1.0 Product Overview ............................................................................................................... 3
1.1 Primary Functionality of the BTX Ankle Tether............................................................... 3
2.0 Operational Description..................................................................................................... 3
2.1 Off State............................................................................................................................. 4
2.2 On State ............................................................................................................................. 4
2.3 Check Battery Voltage....................................................................................................... 5
2.4 Check Conductive Link ..................................................................................................... 5
2.5 Check Optical Link............................................................................................................ 5
3.0 Installation Instructions ..................................................................................................... 6
3.1 BTX Ankle Tether ............................................................................................................. 6
3.2 Tracking/Reporting Unit - TRU ........................................................................................ 6
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USER MANUAL
BTX Ankle Tether
1.0 PRODUCT OVERVIEW
Lares Technologies has created a system for monitoring the location of criminal of fenders
and tracking their position. This system is comprised of an ankle bracelet that is worn by
the offender, together with a cell phone that is carried by the offender. The BTX Ankle
Tether communicates to the Tracking/Reporting Unit (TRU) cell phone. The TRU cell
phone receives location information from the GPS satellite network, and it communicates
status and position via the cellular network. A system block diagram is show below:
1.1 P
RIMARY
The BTX Ankle Tether contains an ankle strap attached to an electronic module. The
electronic module monitors that the ankle strap is always connected, monitoring via both an
optical link and a conductive link on the ankle strap. The BTX Ankle Tether is powered by
a lithium battery. The BTX Ankle Tether includes one pushbutton (START button) on the
unit, used primarily for activation of the device.
The BTX Ankle Tether periodically communicates with the TRU cell phone to provide the
status of the ankle strap connection. In addition, the BTX Ankle Tether communicates
other status information to the TRU (e.g. such as battery status, and pushbutton activation.)
TRU
FUNCTIONALITY OF THE
The TetherTrack  System
BTX
BTX A
NKLE
TETHER
2.0 OPERATIONAL DESCRIPTION
The BTX Ankle Tether has two primary functions: detecting that the ankle strap has not
been removed and reporting the status of the strap to the TRU cell phone.
It has two main states: Off and On. The Off state is used during shipment from the factory
and when not in active use. The On state is used when active monitoring is desired.
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