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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

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