User's Manual

Table Of Contents
GlobalTrak ™ GT Lite Operation and Maintenance Manual
Table of Contents
Section 1: GT Lite Overview................................................................................................................... 8
1.1 GT Lite Overview ............................................................................................................................... 9
Feature List ..........................................................................................................................................................9
Asset Tracking and Monitoring ...........................................................................................................................9
GT Lite Exterior Hardware Description ............................................................................................................10
GT Lite Operational Description .......................................................................................................................12
GT Lite Sensor Suite..........................................................................................................................................13
Temperature Sensor...........................................................................................................................................................13
Optic Sensor.......................................................................................................................................................................13
Shock Sensor .....................................................................................................................................................................13
Door Sensor (optional).......................................................................................................................................................13
Mount Sensor.....................................................................................................................................................................13
Motion Sensor (Note: Motion sensor not currently enabled).............................................................................................13
External Power Sensor.......................................................................................................................................................14
GT Lite GPS ......................................................................................................................................................14
GT Lite Wireless Sensors ..................................................................................................................................14
Section 2: GT Lite Detailed Description.............................................................................................. 15
2.1 GT Lite Detailed Hardware Description ........................................................................................ 16
Functional and Electrical Systems.....................................................................................................................16
System Design ...................................................................................................................................................................16
Sensors...............................................................................................................................................................................16
External Communications..................................................................................................................................................19
ZigBee Wireless.................................................................................................................................................................20
Local Access and Monitoring............................................................................................................................................21
Auxiliary Serial Port..........................................................................................................................................................22
Power Management ...........................................................................................................................................................22
GPS Receiver.....................................................................................................................................................................23
Data Storage and Logging .................................................................................................................................................24
Power Source.....................................................................................................................................................................24
Internal Antenna ................................................................................................................................................................25
Mechanical Description .....................................................................................................................................25
Physical Parameters...........................................................................................................................................................26
External Connectors...........................................................................................................................................................26
2.2 GT Lite Detailed Software Description........................................................................................... 28
Device Logic and Event Handling.....................................................................................................................28
Sensor Data Acquisition ....................................................................................................................................................28
Definitions .........................................................................................................................................................................29
Message Rules ...................................................................................................................................................................30
Over-the-Air Programming................................................................................................................................................35
ZigBee Mesh Network.......................................................................................................................................................35
RFID Operation .................................................................................................................................................................36
Device to Server Message Description ..............................................................................................................36
Logger Message.................................................................................................................................................................36
ZigBee Logger Message....................................................................................................................................................38
Prepared: R. Straz Date: July 25, 2007 Page 3 of 139