Queclink TRACGV55WUM001 - 1 Introduction; Reference; Terms and Abbreviations

GV55W User Manual
TRA
CGV55WUM001 - 6 -
1.I
ntroduction
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
Ta
ble 1. GV55W Protocol Reference
S
N
Do
cument name
R
emark
[1
] GV55W @Track Air Interface Protocol The air protocol interface between GV55W and
backend server.
1.2. Terms and Abbreviations
Ta
ble 2. Terms and Abbreviations
A
bbreviation
D
escription
A
GND Analog Ground
A
IN Analog Input
D
IN Digital Input
D
OUT Digital Output
G
ND Ground
MIC Microphone
R
XD Receive Data
T
XD Transmit Data
SP
KN Speaker Negative
SP
KP Speaker Positive