Sun-Tech ST4940B User manual

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ST4940B User Manual
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Asset Tracker
ST4940B
User Manual

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Table of Contents
Revision History..............................................................................................................................................................5
1. Introduction .................................................................................................................................................................6
2. Key Features................................................................................................................................................................7
2-1. HW Specifications ............................................................................................................................................8
2-2. GPS Specifications...........................................................................................................................................9
2-3. Operational Features......................................................................................................................................10
3. Accessories ...............................................................................................................................................................11
4. How to insert Micro SIM card by step.....................................................................................................................12
5. How to turn on and off ST4940B .............................................................................................................................13
6. Charging Battery.......................................................................................................................................................14
7. Appearance................................................................................................................................................................15
8. How to operate ..........................................................................................................................................................16
9. Configuration.............................................................................................................................................................18
9-1. How to set ‘Network Parameters’..................................................................................................................18
9-2. How to set ‘Report Parameters’ ....................................................................................................................20
9-3. How to set ‘Additional Parameters’ ..............................................................................................................22
9-4. How to set ‘Service Parameters’ ...................................................................................................................24
9-5. How to set ‘Geo-fence Parameters’ ..............................................................................................................25
9-6. How to set ‘Function Parameters’.................................................................................................................26
9-7. How to set ‘Off Parameters’...........................................................................................................................27
10. Command for General Use.....................................................................................................................................28
10-1. Common parts of this command ................................................................................................................28
10-2. Requesting Status........................................................................................................................................28
10-3. Pre-setting.....................................................................................................................................................29
10-4. ACK of Emergency .......................................................................................................................................30
10-5. Requesting ICCID .........................................................................................................................................30
10-6. Requesting to send information about Device Version............................................................................31
10-7. Requesting MCU Firmware Version............................................................................................................31
11. Command for various usages................................................................................................................................32
11-1. Command on how to erase all the saved reports......................................................................................32
11-2. Command on how to setting the movement distance. .............................................................................32
11-3. Command on how to initialize Message Number......................................................................................33
11-5. Command on how to request data relating to Circular Geo-fence..........................................................33
11-6. Command on how to Reboot.......................................................................................................................34
11-7. Command on how to set Google Map Address.........................................................................................34

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11-8. Command on how to get Google Map Address.........................................................................................35
11-9. Command on how to Improve Battery Life ................................................................................................35
11-10. Command on how to turn off the device..................................................................................................36
11-11. Command on how to set the time period that GPS is stabilized. ..........................................................37
11-12. Command on how to get the status of device.........................................................................................38
10-13. Re-setting (Restoring to factory defaults and Rebooting) .....................................................................38
11-14. Command on how to Access to maintenance server to check for update...........................................39
12. Reporting to server.................................................................................................................................................40
12-1. Status Report ................................................................................................................................................40
12-2. Emergency Report........................................................................................................................................42
12-3. Alert Report ...................................................................................................................................................45
12-4. Keep-Alive Report.........................................................................................................................................47
12-5. Parameter Report..........................................................................................................................................48
12-6. Location Query using Smart-Phone ...........................................................................................................48
13. Appendices..............................................................................................................................................................49
13-1. How to install USB Driver on PC under environment of WINDOW..........................................................49
13-2. What to do if PC displays “Alcatel Single RNDIS Interface”....................................................................50

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Disclaimer
We, at Suntech, announce that this document and all other related products (i.e. device, firmware, and software) have
been developed by the company, Suntech International Ltd., which is hereinafter referred to as “Suntech”. The
information in this manual is believed to be accurate and reliable at the time of releasing. We, at Suntech, also assume
no responsibility for any damage or loss resulting from the use of this manual, and expressly disclaim any liability or
damages for loss of data, loss of use, and property damage of any kind, direct, incidental or consequential, in regard to
or arising out of the performance or form of the materials presented herein or in any software program(s) that may
accompany this document. When this document is released, it is most compatible with a specified firmware version.
Now that the functionalities of the devices are being developed and improved continuously from time to time by Suntech,
any alteration on the protocol, the firmware functions, the hardware specifications of the product is subject to change
without prior notice.
Copyright
We, at Suntech, notify that Suntech holds all parts of intellectual rights applicable in the copyright laws in all the
countries. The information contained in this document cannot be reproduced in any form without prior written consent
made by Suntech. Any software programs that might accompany this document can be used only in accordance with
any license agreement(s) between the purchaser and Suntech.
Document Amendments
When it comes to the firmware version column with specific firmware number, any amendment(s) on the comments
column should be made on this relevant firmware version (and the versions thereafter). Before applying any changes
made in this protocol, you are required to make sure that you have upgraded the firmware suitable for the specified
version.

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Revision History
Rev. No.
Date
Contents of Revision
FirmwareNumber
reflecting the latest
revision
Author
1.00
28 May. 2019
Initial writing
1.0.18
YS Kim
1.01
19 Jun. 2019
Add description of PRM report
1.0.25
YS Kim
1.02
1 July, 2019
Fix the function name of “Motion detection mode”
from Emergency Alert
1.0.27
YS Kim
1.03
2 July, 2019
Wrong description fixed
1.0.27
YS Kim

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1. Introduction
ST4940B: Asset Tracking Device
The ST4940B with its magnet holders is a waterproof (IP67compliant) solid hard-cased tracking device to be used for
various purposes. Especially useful for tracking assets
Without any efforts for connecting wires, the ST4940B (hereinafter referred to as ‘device’) works autonomously with its
built-in battery. If users want to track an object with the ST4940B, all they have to do is just simply put it onto container
or location where the object is contained. And then, users can track the locations of such an object and receive an alert
if the object enters or leaves a pre-defined zone.
This non-wiring device has high capacity battery, so it can be useful for monitoring location or alert situation of asset for
a long time without frequent battery charging. And the waterproof ST4940B is suitable for covert tracking even in rainy
weather conditions.
The ST4940B is ideal for tracking various objects such as vehicles, boats and valuable fixed/moving assets like
expensive merchandises, computers, electronic products, machinery and so on.
In addition to 3-axis acceleration sensor, the ST4940B has various functionalities such as ultralow-power consumption
algorithms and motion checking.
*In case the ST4940B is placed inside a metal container, it may not work.

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2. Key Features
Operation on the LTE M1/GSM Network
High capacity battery (18200mAh)
Power On/Off via magnet
Multipurpose tracker for vehicle, boat, merchandise, etc
New technology and the latest GPS Chipset
Firmware upgradeable remotely (OTA)
Sleep on network by deactivation the motion detection
Superior power consumption management algorithm
Power On/Off by magnet can be disabled
SMS/GPRS/LTE M1 communications
Alert report when the battery is in a low status
Periodic reporting in real time
Built-in motion detector for alarming
ST4940B with its Magnet holder Waterproof in compliance with IP67

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2-1. HW Specifications
Item
Description
Battery
Rechargeable 3.7V, Li-ion Battery- 18200mAh
Motion Detection
Built-in 3-axis Acceleration sensor
Frequency
B2/B4/B12/B13 @LTE M1
850/900/1800/1900MHz @GSM
Temperature Range
-20°C ~ +60°C
*Caution !
Please pay a careful attention that the vehicle shall NOT be left
under direct sunlight for long time in hot weather. There is a risk
of battery explosion at hot temperature.
User Interface
Magnetic sensor for power control by magnet,
Charger Adaptor, Charger & Setting Cable
LED Indicator
GPRS/LTE M1, GPS, Charging status
GPRS
Multi-slot Class 12
Support all 4 coding schemes
(CS-1, CS-2, CS-3 and CS-4)
‘SyncTrak’ for PC
Micro USB cable
Dimensions
50.5(W) x 75(L) x 35.5(T) mm
TBD (with cradle)
Weight
550g (without holder)
Approval
FCC

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2-2. GPS Specifications
Item
Description
Receiver Type
GPS & Glonass
GPS L1 band(1575.42MHz), Glonass L1 band (1601.71MHz)
Galileo* E1B/L1, Compass* ready
SBAS : WAAS, EGNOS, MASA, GAGAN
Update Rate
1Hz
Accuracy1)
Position 2.5m CEP
SBAS 2.0m CEP
Acquisition2)
TCXO
Cold starts 26s
Aided start<1s
Hot start<1s
Sensitivity3)
Tracking -167dBm
Reacquisition -161dBm
Cold start -149dBm
Back-up Supply
Voltage range : 2.5V to 3.6V
Antenna type
Patch Antenna
Operating Temperature
-20 ~+60℃
*1) All SV @ –130 dBm
*2) It depends on aiding data connection speed and latency
*3) The 3 figures were measured with a good active antenna.

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2-3. Operational Features
Item
Description
Configuration
either by SMS or PC
Parameter Change
either by SMS or GPRS/LTA M1
Command /Control
either by SMS or GPRS/LTE M1
Reporting
either by GPRS/LTE M1 or SMS (as a back-up)
Server Communication
TCP/UDP,SMS
Server Connection
either always connected or upon needed
Basic Data reported
NMEA location, Speed, Course, GPS signal status Message No.,
Accumulated moving (travelling) distance
Data Storage
up to 2,000 locations in case of transmission failure or cost issue
Reporting
Possible to make a cyclic location report at an adjustable intervalonly
when command comes
Back-up Reporting
possible (Dual IP reporting or Backup SMS reporting)
Power down
Sleep on network(less than 4mA)
Deep sleep on no network (less than 15uA):
How to upgrade
Firmware
by OTA (Over-The-Air ) or PC tool.

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3. Accessories
The ST4940B provides below accessories
Wall Charger
External Power cable
Cigar Jack Cable
Magnetic holder

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4. How to insert Micro SIM card by step
There are 3 steps in inserting a Micro SIM card into the ST4940B as shown below in the pictures.
Step 1.:Unscrew Case and open. be careful of battery cable not being disconnected
Step 2.:Please, Insert SIM.
SIM

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Step 3.:Attach the cushion in the red area in order not to make the SIM separated from the PCB..
5. How to turn on and off ST4940B
ST4940B can be turned on and off via magnet.
If magnet is attached on below point over 3 seconds, ST4940B will turn on automatically
With same way, you can turn off ST4940B

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6. Charging Battery
It is highly recommended that the rechargeable battery should be charged completely before using the device.Connect
the ST4940B to its charger cable supplied by Suntech and charge it for 10 hours around.
< Charging Status indicated on the charging LED >
Red LED located on side turns on statically
< Charging completion indicated on the charging LED >
Red LED located on side turns off right after charging is completed
<Caution!!>
The ST4940B (device) should be charged by using the 12V output wall charger that Suntech provides the user with. In
such a case, however, Suntech does not guarantee that charging the device can be done completely. It is highly
recommended that the users, in charging the device, should use the battery charger provided by Suntech.

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7. Appearance

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8. How to operate
The ST4940B, multifunctional battery-powered GPS tracker, is ideal for tracking valuable assets like merchandises that
are delivered by putting it onto an object.
While tracking, it reports location information about the object at a predefined interval and alerts if it detects motion of
the object.
Users are required to set the reporting timing of the device at an interval with more than 10 minutes in order to save the
endurance time of the battery.
Power
Turn On
If magnet is attached on sensor point over 3 seconds, ST4940B will turn on automatically
When the power is on, LEDs blink as below.
Turn Off
If magnet is attached on sensor point over 3 seconds when device is being powered on , the
device goes to shutdown. After the power is turned off, no LED blinks or lightens.
Red LED
GPS/Data status indicator
Right after the device is turned on, the red LED starts to blink as below. Five (5) minutes after
the red LED starts to blink, it is turned off automatically to save battery. If you attach sensor
point with magnet shortly, the red LED will be on just for short time, for some seconds, to show
you the current status of the GPS connectivity.
Fixed : 1 time
No fixed: 2 times.
GPS error: 4 times.

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Blue& Red
LEDs
(2 colors)
GSM/LTE M1 network & Operating Status indicator
Right after the device is turned on, the blue LED starts to blink as below. Five (5) minutes after
the blue LED starts to blink, it is turned off automatically to save battery. If you attach sensor
point with magnet shortly, the blue LED will be on just for short time, for some seconds, to show
you the current status of the GSM/LTE M1 network connectivity.
Network OK: 1 time
Server communication Error : 2 times
GPRS/LTE M1 Communication Error : 3 times
No GSM/LTE M1 (= not connected with the GSM/LTE M1 network): 4 times.
SIM PIN Locked : 5 times
Impossible to connect with the GSM/LTE M1 network : 6 times
No SIM Error (= an error when SIM is not available) : 7 times
SIM PUK Locked : 8 times
In addition to the status described above, the blue LED continues to blink either if the device
has an error of SIM Locking or if it does not have a SIM. .
If you attach sensor point with magnet shortly, the Red LED indicates the operation status of
the device by showing number of blinking as below.
1 time of blinking means status of Power Off
2 times of blinking mean status of hibernation
3 times of blinking meanstatus of Power Off and battery discharged. It means that
it is time to charge the battery
Battery
LEDs
(3 colors)
Battery indicator
Normally, it blinks shortly to indicate the battery level for user as described below.
Red LED blinks twice shortly. under 10% of the full capacity
Red LED blinks. under30% of the full capacity.
Amber LED blinks. 30% to 80%
Green LED blinks. 80% to 100%
Protocol
Watchdog
If the PDP or GPRS/LTE-M1 connection keeps going invalid status for a while about 40 minutes
up to 1 hour, then the device will be reboot and recover the data communication in case that the
problem was not caused by the network side.

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9. Configuration
Before a device starts being operated, its parameters should be set first. This chapter shows the string to be sent to
device.
There are 3 options of sending string.
Option 1: by using PC.
Option 2: by using GPRS/ LTE-M1 network.
Option 3: by messaging via SMS.
In practice, configuration can be made more efficiently with ‘SyncTrak’, i.e. a setting tool provided by Suntech.
Once a device receives a command from the server, it gets back to the server with a relevant response. Device also
changes some parameters (if it is required to do so) or takes an action as instructed below as per the command sent by
the server.
9-1. How to set ‘Network Parameters’
● The table below shows how user can set Network parameters, Server information and PIN Lock code.
HDR
DEV_ID
VER
AUTH
APN
USER_ID
USER_PWD
SEVER_IP
SEVER_PORT
B_SEVER_IP
B_SEVER_PORT
SMS_NO
PIN_NO
CMD_FROM_SERVER
Field
Marks
Value
Meaning
HDR
“ST600NTW”
Command type of Header.
DEV_ID
10 char
Device ID.
VER
“02”
Protocol Version
AUTH
‘0’ /‘1’/’A’
GPRS/ LTE-M1 authentication
0 : PAP
1 : CHAP
A : Automatic GPRS/ LTE-M1 set.
3 : None
In Automatic case, parameters for APN, USER_ID and
USER_PWD field should remain empty.
*PAP : Password Authentication Protocol
*CHAP : Challenge Handshake Authentication Protocol
APN
String
Access Point Name
USER_ID
String
ID for GPRS/LTA M1 Access
USER_PWD
String
Password for GPRS/ LTE-M1 Access

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SEVER_IP
String
Server IP Address
SEVER_PORT
String
Server Port
B_SERVER_IP
String
Backup Server IP Address
B_SERVER_PORT
String
Backup Server Port
SMS_NO
String
Phone number through which device sends SMS report.
This can be used for backup in an area where GPRS/ LTE-M1
condition is not good. Alternatively, it can be used as main
reporting method when IP and Port are empty. If you do not
use this, it should remain empty.
If some phone numbers have been registered on ‘SMS_NO’
and they are set properly, only SMS messages of which phone
numbers were registered can be accepted as command. The
SMS of which phone numbers have not been pre-set, those
SMS messages coming from those phone numbers are
disregarded.
“SMS_NO” has to be set with a number more than 7 digits
and please use the number without international code such as
“+55”.
PIN_NO
String
PIN Number to release PIN lock if it is enabled
CMD_FROM_SERV
ER
‘0’ / ‘1’
Receive command via GPRS/ LTE-M1
‘0’ : Disable (When server doesn’t send command via GPRS/
LTE-M1)
‘1’ : Enable
<Example>
[command]
ST600NTW;0123456789;02;1;mft;mft;mft;183.109.78.85;8024;;;;;1
ST600NTW;0123456789;02;A;;;;183.109.78.85;8024;;;;;1
[response]
ST600NTW;Res;0123456789;309;1;mft;mft;mft;183.109.78.85;8024;;;;;1
ST600NTW;Res;0123456789;309;A1;mft;mft;mft;183.109.78.85;8024;;;;;1
<Notes>
** If the Network does not require User ID and Password, these fields should be empty.
** If CMD_FROM_SERVER is enabled, the device should keep connection with the server though GPRS/LTE M1

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so that the device can receive a command from the server.
Sometimes, the device may send ‘Alive Report’ to keep the connection because the network provider may
disconnect the GPRS/ LTE-M1 connection if there is no communication for such a time-period. Also, the device
may send‘Alive Reports’ to re-connect with the server while the device is disconnected from the server.
Automatic Setting for GPRS/ LTE-M1 Network
If you set the device to ‘Automatic GPRS/ LTE-M1 Set’, the device will automatically set the parameters for GPRS/
LTE-M1 with the data available on the inserted SIM card.
For instance, if Airtel SIM is inserted, the device will set ‘AUTH’ to ‘0’, ‘APN’ to ‘airtelgprs.com’, ‘USER_ID and
USER_PASS’ to empty respectively.
And then, the device reports response string after adding real GPRS/ LTE-M1 parameters, if ‘Automatic GPRS/
LTE-M1 Set’ is selected.
DNS
SEVER_IPand B_SERVER_IP field can be filled with direct IP address (for example 111.111.111.111) or domain
name (for example, suntechint.com). If this field is written by domain, the device will find real IP address by DNS
and sends reports to IP address.
The combination of the order to use the GPRS/ LTE-M1 and SMS.
SEVER_IP
SERVER_PORT
SMS_NO
GPRS- LTE-M1/SMS(BACKUP)*
ex)111.111.111.111
ex)1190
ex)123456789
GPRS/ LTE-M1 ONLY
ex)111.111.111.111
ex)1190
EMPTY
SMS ONLY
EMPTY
EMPTY
ex)123456789
* If the device falls into server communication error, reporting route is changed to SMS and report interval to 10 minutes.
After 50 minutes elapsed with server communication error status, packed SMS with 5 reports every 10 minutes will be
sent to specified SMS_NO.
9-2. How to set ‘Report Parameters’
● The following table shows how to set intervals of location report, alert and how to set sensor value to sense if any
motion is made.
HDR
DEV_ID
VER
MOVING_STOP_INTRV
MOVING_INTRV
EMERGENCY_INTERVAL
EMERGENCY_ALERT_NUM
MOTION_DET_THRES
PRM_ENABLE