User's Manual

GlobalTrak ™ GT Lite Operation and Maintenance Manual
Battery Life
The GT Lite supports a wide range of applications, including some where sleep periods extend
to 12 hours or more and some where sleep period is minutes. Battery life extimates are:
- 365 days at 12 hour reporting
- 15 days at 5 minute reporting
Battery Charging
GT Lite contains an internal charging circuit to properly charge the battery while external
power is applied. The charger is a single cell lithium ion, three stage charger, capable of a
vehicle power inputs. The charger’s characteristics are as follows:
Input Voltage: 7V ≤ Vin ≤ 18V
Input Current: 1.5A Max
Internal Antenna
To reduce install time and complexity, the GT Lite will feature an internal, integrated
GPS/GSM antenna. The antenna will be placed in the top of the enclosure and oriented for
optimal GPS performance.
GPS Antenna
The GPS antenna will be an active antenna with the following characteristics.
Parameter Specification
Antenna Gain
Minimum: 20dB
Maximum: 30dB
Antenna Noise Figure 1.5dB
Antenna Supply 3.3V
GSM Antenna
The GSM antenna is a quad-band GSM antenna using the following frequencies: 850, 900,
1800 and 1900 MHz.
Mechanical Description
The relevant mechanical requirements for the intended product use are detailed below.
Prepared: R. Straz Date: July 25, 2007 Page 25 of
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