User's Manual

GlobalTrak ™ GT Lite Operation and Maintenance Manual
PROTOCOL:
PROTOCOL statements deal with the Over-the-Air protocol on GT Lite. These statements
usually refer to message packing and creation.
SMS:
SMS statements deal with the Short Message Service (SMS) subsystem. These are transmit
and receive attempts over SMS.
TCP:
TCP statements deal with the TPC/IP over GPRS subsystem. These are transmit and receive
attempts over GPRS as well as gathering of assistance data.
OTA:
OTA statements deal with over the air upgrade processes. This is both downloading code and
performing the upgrade.
POWER:
POWER statements deal with power control of the device. This includes sleep and shutdown
of modules to keep power output low.
Common GT Lite Functions
Low Power Controller Communication
There are many statements that deal with communication with the low power controller.
Most of these are defined in the Common Diagnostic Output section below. The most
common line is below:
APPLICATION: (messageCallback) ZIGBEE_STAR_AWAKE
This line indicates to the user that communication with the low power controller is successfully
operating.
Message Creation
When messages are created, GT Lite outputs the entire contents of the message. However
the first line printed indicating a message has been created is below. It indicates a message
has been created and the type of message. The recordDataType definition is in section 2.2.
PROTOCOL: (LoggerMessage_Create) Enter. recordDataType=7
After the creation statement, the following is displayed, which shows the contents of the
message.
Note: GPS information (including speed and direction) is updated after the GPS fix is received.
PROTOCOL: ################ LoggerMessage_Create ################
PROTOCOL: Record Data Type: 7
PROTOCOL: GPS Mode: Providing Last Valid Location Estimate
PROTOCOL: Timestamp: 299785758 sec: 3469 days, 17 hrs, 49 min, 18 sec
Prepared: R. Straz Date: July 25, 2007 Page 58 of
139