User's Manual

VTU-3 Users Guide
Page 14 of 18
LoJack Confidential Proprietary
Document Not To Be Copied Or Retransmitted In Any Form Without Prior Authorization
Glossary
Acronyms:
A
Ack Acknowledgement
AES (Tower to Tower Communications – International term)
AJD Anti Jam Disable
B
Base Ack Acknowledgement by TRTU
BBU Battery Back-up Unit
BOM Bill Of Material
C
CP Command Post
D
DSP Digital Signal Processor
E
ETSI European Telecommunications Standards Institute
F
FCC Federal Communications Commission
FSK Frequency Shift Keying
G
GPRS General Packet Radio Service
GPS Global Positioning System
GSM Global System for Mobile Communications
I
IA Instant Activation
ITU Installation Test Unit
L
LCIMS LoJack Corporate Information Management System.
LJU
LoJack Unit (See VLU. This abbreviation is used primarily in
the USA.)
LJU3 LoJack Unit. Also known as VLU3.
LP Listening Post
LPRT Listening Post / Remote Transmitter
M
MOD/PTT Modulator/ Push To Talk
MSK Minimum Shift Keying
MSM Motion Sensing Module
MTBF Mean Time Between Failure
N
NAK Not Acknowledged
NTP Network Time Protocol
P
PCB Printed Circuit Board
PDA Personal Digital Assistant
PDT Portable Data Terminal
PSU Power Supply Unit
PURR
Periodic Uplink Response Rate