USGlobalsat GTR-128 User Manual
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1.3 Hardware specification
Item
Description
Model
GTR-128
GTR-129
Dimension
61 mm X 38 mm X 19 mm
CPU
High performance line ARM-base 32-bit MCU
GPS receiver
SiRF Star IV high performance GPS chipset
Operation
-30
℃
~ + 80
℃
-10
℃
~ + 60
℃
(0
℃
~ + 45
℃
for charging)
Temperature
Storage
-40
℃
~ + 85
℃
GPS Antenna
Built-in patch ceramics antenna
GSM Antenna
Built-in Pi-Fa antenna
Communication
Quad-Band GSM (850/900/1800/1900 MHz)
Protocol
SMS/GPRS (TCP/UDP)
Power
8~36 V
Built-in Memory
32 Mb
Emergency Input
Negative trigger
1
Ignition (ACC) Input
Positive trigger
1
Digital Input Port
Negative trigger
1
Digital Output Port
Negative trigger
1 (300 mA)
Fuel sensor Input Port
Analog Input
1( 0~28V), 12 bits resolution
Serial Port
115200 bps
Sensor
Motion sensor