GV55N
User
manual
TRACGV55NUM001
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7
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1
Introduction
The GV55N 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 850/900/1800/1900, its location can be monitored in real time or be
periodically tracked by a backend server or other specified terminals. The GV55N has
multiple input/output interfaces that can be used for monitoring or controlling external
devices. Based on the integrated @Track protocol, the GV55N can communicate with a
backend server through the GPRS/GSM 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 GV55N to monitor the status of a vehicle
and control the vehicle by its external relay output. System Integrators can easily setup
their tracking systems based on the full-featured @Track protocol.
Table 1.
GV55N Protocol Reference
SN Document name
Remark
[1] GV55N @Track Air Interface Protocol
The air protocol interface between
GV55N and backend server.
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
1.1.
Reference
1.2.
Terms
and
Abbreviations
