User's Manual

iTX Basics STRATEGIC Technologies Inc
10
iTRX Series Users Guide (STI) Feb 6, 2004
iTX Basics
Features
The iTX (transmitter) attaches to the participant’s ankle or wrist. The iTX transmits a radio frequency
signal once every 11 seconds on rotating frequencies. The transmission is received by the iTRX Series
receiver (ACU). The transmission contains an iTX serial number, and two status messages. The iTX
serial number identifies the iTX to the ACU. The ACU expects to receive a specific identifying serial
number from the iTX in order to validate the transmission. The two status messages are strap sever
and low battery. The strap sever message indicates if the strap is completely broken. The low battery
message indicates if the battery installed in the iTX is approaching the limits of its lifetime or if it is
improperly installed.
Resetting the iTX
The strap sever alarm has the ability to remember if the alarms were ever activated. This will ensure
that should the participant sever the strap while away from the area of confinement and attempt to
repair it prior to returning, the alarm will be reported upon return. These parts of the iTX circuitry need
to be reset upon initial installation by using a LOCK. The iTX button on the LOCK is used to reset
the alarm. Simply place the LOCK against the reset point (See Figure 3: Resetting an iTX) on the iTX
and press the iTX button once. The LOCK will emit a special electronic signal (while the red light
is on) and reset the circuitry. See Page 24 for more information regarding Function Mode use of a
LOCK.
Figure 3 : Resetting an iTX