Queclink GV57MG User manual

GV57MG User Manual
TRACGV57MGUM001 - 0 -
GV57MG User Manual
EGPRS/LTE Cat-M1/LTE Cat-NB2/GNSS
Tracker
TRACGV57MGUM001
Version: 2.01

GV57MG User Manual
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Document Title
GV57MG User Manual
Version
2.01
Date
2021-06-17
Status
Release
Document Control ID
TRACGV57MGUM001
General Notes
Queclink offers this information as a service to its customers, to support application
and engineering efforts that use the products designed by Queclink. The information
provided is based upon requirements specifically provided to Queclink by the
customers. Queclink has not undertaken any independent search for additional
relevant information, including any information that may be in the customer’s
possession. Furthermore, system validation of this product designed by Queclink
within a larger electronic system remains the responsibility of the customer or the
customer’s system integrator. All specifications supplied herein are subject to change.
Copyright
This document contains proprietary technical information which is the property of
Queclink Wireless Solutions Co., Ltd. The copying of this document, distribution to
others, and communication of the content thereof, are forbidden without express
authority. Offenders are liable to the payment of damages. All rights are reserved in
the event of a patent grant or registration of a utility model or design. All specifications
supplied herein are subject to change without notice at any time.

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Contents
Contents...........................................................................................................................................2
Table Index ......................................................................................................................................3
Figure Index ....................................................................................................................................4
0. Revision History .........................................................................................................................5
1. Introduction .................................................................................................................................6
1.1 Reference ............................................................................................................................6
1.2 Terms and Abbreviations.....................................................................................................6
2. Product Overview.......................................................................................................................7
2.1 Check Parts List ...................................................................................................................7
2.2 Parts List ..............................................................................................................................7
2.3 Interface Definition .............................................................................................................8
3. Getting Started ...........................................................................................................................9
3.1 Installing a SIM Card............................................................................................................9
3.2 UART Interface ..................................................................................................................11
3.3 USB Interface.....................................................................................................................11
3.4 Power Connection.............................................................................................................12
3.5 Ignition Detection..............................................................................................................12
3.6 Digital Input.......................................................................................................................13
3.7 Digital Output....................................................................................................................13
3.8 LED Status..........................................................................................................................15
3.9 Motion Sensor Direction ...................................................................................................16
4. Troubleshooting and Safety Information...............................................................................17
4.1 Troubleshooting ................................................................................................................17
4.2 Safety Information.............................................................................................................17

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Table Index
TABLE 1: GV57MG PROTOCOL REFERENCE .............................................................................. 6
TABLE 2: TERMS AND ABBREVIATIONS ....................................................................................... 6
TABLE 3: GV57MG PARTS LIST ....................................................................................................... 8
TABLE 4: DESCRIPTION OF 5-PIN CONNECTIONS .................................................................... 8
TABLE 5: ELECTRICAL CHARACTERISTICS OF IGNITION DETECTION ............................. 12
TABLE 6: ELECTRICAL CHARACTERISTICS OF DIGITAL INPUT........................................... 13
TABLE 7: ELECTRICAL CHARACTERISTICS OF DIGITAL OUTPUT ...................................... 14
TABLE 8. DEFINITION OF DEVICE STATUS AND LED.............................................................. 15

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Figure Index
FIGURE 1. APPEARANCE OF GV57MG ......................................................................................... 7
FIGURE 2. GV57MG 5-PIN CABLE................................................................................................... 8
FIGURE 3. TYPICAL POWER CONNECTION .............................................................................. 12
FIGURE 4. TYPICAL IGNITION DETECTION................................................................................ 12
FIGURE 5. TYPICAL DIGITAL INPUT CONNECTION................................................................. 13
FIGURE 6. INTERNAL DRIVER CIRCUIT FOR DIGITAL OUTPUT .......................................... 14
FIGURE 7. TYPICAL CONNECTION WITH A RELAY................................................................. 14
FIGURE 8. GV57MG LEDS ON THE CASE................................................................................... 15
FIGURE 9. MOTION SENSOR DIRECTION................................................................................... 16

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0. Revision History
Version
Date
Author
Description of Change
1.00
2020-12-14
Oliver Ding
Initial
2.01
2021-06-17
Oliver Ding
Updated the pictures in Chapter 3.1, Chapter
3.2 and Chapter 3.3.

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1. Introduction
GV57MG is a mini GNSS tracker designed for a wide variety of vehicle tracking
applications. Its built-in GNSS receiver has superior sensitivity and fast time to first fix.
The device boasts an IP67 compliant waterproof case. Its built-in Bluetooth can be
used for data transmission. It supports LTE Cat M1/NB2 network on multiple bands for
operation globally with a fallback to EGPRS.
1.1Reference
Table 1: GV57MG Protocol Reference
SN
Document Name
Remark
[1]
GV57MG @Track Air Interface
Protocol
The air protocol interface between
GV57MG and backend server.
1.2 Terms and Abbreviations
Table 2: Terms and Abbreviations
Abbreviation
Description
IN1
Digital Input1
VIN
External DC Power Input
GND
Ground
OUT
Digital Output
IGN
Ignition

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2. Product Overview
2.1 Check Parts List
Before starting, check whether all the following items have been included with your
GV57MG. If anything is missing, please contact your supplier.
Figure 1. Appearance of GV57MG
2.2 Parts List
Name
Picture
GV57MG Locator
User Cable
GV57MG UART Cable 0.5M(Optional)

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GV57MG USB Cable 0.5M(Optional)
Table 3: GV57MG Parts List
2.3 Interface Definition
GV57MG has a 5-Pin cable. The figure of the 5-Pin cable is shown below.
Figure 2. GV57MG 5-Pin Cable
Index
Description
Color
Remark
1
IN1
Orange
Digital Input1,negative trigger
2
VIN
Red
External DC Power Input, 8-32V
3
GND
Black
Ground
4
OUT
Brown
Digital Output, open drain, 150mA
max
5
IGN
White
Ignition input, positive trigger
Table 4: Description of 5-pin Connections

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3. Getting Started
3.1 Installing a SIM Card
Step 1: Remove the top cover (ensure the device is not powered unplug the 5-Pin
cable and turn off the battery).
Note: Waterproof equipment. Don’t disassemble repeatedly.
Step 2: Put the SIM card into the SIM card holder. Press down on the SIM card slightly
to make it slide into the slot.

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Step 3: Place the top cover on the bottom cover, and tighten both covers until they
snap.Make sure that the seal ring is in place and there is no obvious gap
between covers and seal ring.
Step 4: Turn over the device and tighten the screws with screw cushion.

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3.2 UART Interface
There is a UART interface on GV57MG used to connect to GV57MG UART Cable
0.5M. UART is used for configuration. The UART interface and USB interface use the
same physical interface.
3.3 USB Interface
GV57MG has one USB interface which uses the same physical interface as UART
interface. It is used for firmware download.

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3.4 Power Connection
PWR (VCC, Red) / GND (Black) are the power input pins. The input voltage range for
this device is from 8V to 32V. The device is designed to be installed in vehicles that
operate on 12V/24V vehicle without the need for external transformers.
Figure 3. Typical Power Connection
3.5 Ignition Detection
Logical Status
Electrical Characteristics
Active
5.0V to 32V
Inactive
0V to 3V or open
Table 5: Electrical Characteristics of Ignition Detection
Figure 4. Typical Ignition Detection
G
N
D
8
-
3
2
V
v

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IGN (White) is used for ignition detection.
An alternative to connecting to the ignition switch is to find a non-permanent power
source that is only available when the vehicle is running, for example, the power source
for the FM radio.
IGN signal can be configured for the device to start transmitting information to the
backend server when the ignition is on, and enter the power saving mode when the
ignition is off.
3.6 Digital Input
There is one general purpose digital input on GV57MG. It is a negative trigger.
Logical Status
Electrical Characteristics
Active
0V to 0.8V
Inactive
Open
Table 6: Electrical Characteristics of Digital Input
Figure 5.Typical Digital Input Connection
3.7 Digital Output
OUT (Brown) is a digital outputon GV57MG. It is of open drain type and the maximum
drain current is 150mA.

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Figure 6. Internal Driver Circuit for Digital Output
Index
Description
Remark
1
Enable
<1.5V @ 150mA
2
Disable
Open drain
Table 7: Electrical Characteristics of Digital Output
Figure 7.Typical Connection with a Relay
Note:
1. Many modern relays come with a fly backdiode pre-installed internal to the relay
itself. If the relay has this diode, ensure the relay polarity is properly connected. If this
diode is not internal, it should be added externally. A common diode such as a 1N4004
will work in most circumstances.
B
r
o
w
n

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3.8 LED Status
GV57MG has two status LEDs that are CELL LED and GNSS LED.
Figure 8. GV57MG LEDs on the Case
LED
Device Status
LED Status
CELL
LED
(Green)
The device is searching cellular network.
Fast flashing
The device has been registered to cellular
network.
Slow flashing
SIM card needs pin code to unlock.
ON
GNSS
LED
(Red)
GNSS is turned off.
OFF
The device has got GNSS location information.
ON
The device is searching for GNSS signal.
Fast flashing
GNSS sends no data or data format error
occurs.
Slow flashing
Table 8. Definition of Device Status and LED
Note:
1. The fast flashing of cell led is about 100ms ON/800ms OFF.
2. The slow flashing of cell led is about 100ms ON/2000ms OFF.
3. The fast flashing of GNSS led is about 100ms ON/100ms OFF.
4. The slow flashing of GNSS led is about 600ms ON/600ms OFF.

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3.9 Motion Sensor Direction
GV57MG has an internal 3-axis accelerometer supporting motion detection. The
following shows the directions of the motion sensor. The z-axis points vertically inward.
Figure 9. Motion Sensor Direction

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4. Troubleshooting and Safety Information
4.1 Troubleshooting
Problem
Possible Reason
Solution
After GV57MG is turned
on, the CELL LED always
flashes quickly.
The signal is too weak;
GV57MG cannot be
registered to the
network.
Please move GV57MG
into places with good
network coverage.
Messages cannot be
reported to the backend
server.
The IP address or port
of the backend server is
wrong.
Make sure the IP address
for the backend server is
an identified address on
the internet.
GV57MG cannot power
off.
The device is connected
to ignition wire.
Disconnect ignition wire,
and try again.
GV57MG cannot get
successful GNSS fix.
The GNSS signal is
weak.
Please move GV57MG to
a place with open sky.
It is better to let the
surface (without LED
indicators) face the sky.
4.2 Safety Information
Do not disassemble the device by yourself.
Do not put the device in overheated, too humid place, and avoid exposure to
direct sunlight. Too high temperature will damage the device or even cause
battery explosion.
Do not use GV57MG on airplane or near medical equipment.

This device complies with part 15 of the FCC rules . Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
NOTE: The manufacturer is not responsible for any radio or TV interference caused by
unauthorized modifications to this equipment. Such modifications could void the user’s authority
to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates
uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-Consult the dealer or an experienced radio/TV technician for help
- This device and its antenna(s) must not be co-located or operating in conjunction with any other
antenna or transmitter.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance of 20 cm
between the radiator and your body. This transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter.