System Planning Corporation GTLITEV3 Manuale Utente

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GT Lite Operation and Maintenance Manual 

 

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 

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. 

The GPS antenna will be an active antenna with the following characteristics. 

 

Antenna Gain 

Minimum:  20dB 

Maximum:  30dB 

Antenna Noise Figure 

1.5dB 

Antenna Supply 

3.3V 

The GSM antenna is a quad-band GSM antenna using the following frequencies:  850, 900, 
1800 and 1900 MHz. 

The relevant mechanical requirements for the intended product use are detailed below. 

  Prepared:  R. Straz 

Date: July 25, 2007 

 

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