GV55W User Manual
TRACGV55WUM001
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1.Introduction
GV55W is a powerful GPS locator designed for vehicle or asset tracking. It has superior receiver
sensitivity, fast TTFF (Time to First Fix) and supports Dual-Band GSM frequencies
850/1900, its location can be monitored in real time or periodically tracked by a backend
server or other specified terminals. GV55W has multiple input/output interfaces that can be
used for monitoring or controlling external devices. Based on the integrated @Track
protocol, the GV55W can communicate with a backend server through the GPRS network to
transfer reports of emergency, geo-fence boundary crossings, low backup battery or
scheduled GPS position as well as many other useful functions. Users can also use GV55W to
monitor the status of a vehicle and control the vehicle by its external relay output. System
Integrators can easily set up their tracking systems based on the full-featured @Track protocol.
1.1.
Reference
Table 1.
GV55W Protocol Reference
SN Document name
Remark
[1] GV55W @Track Air Interface Protocol
The air protocol interface between GV55W and
backend server.
1.2.
Terms and Abbreviations
Table 2.
Terms and Abbreviations
Abbreviation
Description
AGND
Analog Ground
AIN
Analog Input
DIN
Digital Input
DOUT
Digital Output
GND
Ground
MIC
Microphone
RXD
Receive Data
TXD
Transmit Data
SPKN
Speaker Negative
SPKP
Speaker Positive
