User's Manual

VTU-3 Users Guide
Page 16 of 18
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Definitions
Activation Code.. The code associated with a LoJack Unit that is used for activating or deactivating the
unit.
Adaptive configuration A supported configuration in which the VLU-5N will synchronize to a TRTU,
and operate its receiver with a duty cycle in order to reduce average current
consumption. When an Adaptive unit is out of range of a TRTU or TRU, it will
operate its receiver continuously, hence drawing more current than when
synchronized.
AES Intellinet A manufacturer of security and wireless communication products in the USA
Alert ID Character string transmitted by a Vehicle Locating Unit triggered by a motion sensor
(MSM)
Alpha Paging Alpha Paging is a text message sent to a pager. These messages may include
alphabetic and numeric characters.
Antenna Tuning Unit (ATU) A circuit that can be adjusted to minimize the mismatch between the
antenna and the unit's transmit and receive circuits.
Arm Code
Backup Battery A 6.0V battery that can be connected to the Adaptive, Full Service, or Low Current
VLU-5N to provide backup and transmit power, if and when the primary battery is
removed or discharged. The backup battery is replaced with a transmitter battery in
the Portable model.
Box Number The Vehicle Locating Unit Serial number
Central System ... Incorporates the Transmission System and the Registration and Activation System
Configuration ID.
Deactivation ID.... Alternate character string for deactivating a Vehicle Locating Unit
Dedicated Battery A 3.6V battery that supplies power to the VLU-5N processor and receiver circuits in
the Portable configuration.
Domestic VLU or Wideband VLU............... A unit that is designed and manufactured to FCC requirements.
This includes any unit that is not ETSI compatible, including units shipped to non-
ETSI countries. Domestic TRTU units are configured to work with the standard
LoJack 8 seconds TRTU system and has a 25 KHz bandwidth. See TRTU below.
The domestic VLUX is specified in a separate document. See Reference 14. LoJack
IV Vehicle Transceiver Version R02.02 DRAFT
Downlink Minimum Shift Keying transmission from Remote Transmission Unit to Vehicle Locating
Unit
DSP Card Digital Signal Processor Card (part of the Uplink Receiver assembly)
Early Warning
Early Warning Detector (EWD) See Motion Sensing Module (MSM)
ETSI A unit that is designed and manufactured to European Telecommunication Standards
Institute requirements.
Extended Message A message generally sent from the TRTU system to the VLU-5N unit.
Extended messages are not part of the original LoJack standard messages. They
extend the number of messages in the system to increase versatility
Full Service Configuration (FS) ...............A model that will not attempt to synchronize with a TRTU system.
Installation and Test Unit (ITU)................A special purpose test instrument that allows testing of a VLU-5N.
The ITU communicates to the VLU-5N using the TEST REQUEST command
according to the VLU-5N protocol.
LE Liaison. Law Enforcement Liaison is a LoJack employee with responsibility of interfacing with law
enforcement agencies.