SIYI 2.4G DATALINK User manual

2.4G Datalink User Manual v1.1
2.4G DATALINK
USER MANUAL
V1.1
June 2020

2.4G Datalink User Manual v1.1
Thank you for purchasing SIYI Technology’s product.
SIYI 2.4G Datalink is designed to be a professional transmitting and receiving station for drones on
industrial application, such as aerial mapping. It is applied with a brand new RF modulation
technology which supports an anti-interference long communication distance at very low
transmitting power.
To maintain a safe and orderly public space and to ensure you a good using experience of AK28
transmitter, please read this manual carefully. If you have any issue using the product, please
consult the manual or check online pages of AK28 on SIYI Technology’s official website
(http://www.siyi.biz). You can also inquire our after-sale service coordinator ([email protected]).

2.4G Datalink User Manual v1.1
CONTENT
1 READ TIPS...............................................................................................................................................................1
1.1 Icon Definition....................................................................................................................................................1
1.2 Flight Safety .......................................................................................................................................................1
1.3 Precautions on Storage/Carrying/Recycling.......................................................................................................3
2 PRODUCT INTRODUCTION .................................................................................................................................4
2.1 Product Features .................................................................................................................................................4
2.2 Parts....................................................................................................................................................................5
2.2.1 At a Glance..................................................................................................................................................5
2.2.2 Ports on 2.4G Datalink System....................................................................................................................5
2.3 Technical Specification ......................................................................................................................................6
2.4 Packing List........................................................................................................................................................8
2.5 AK28 Common Diagram....................................................................................................................................8
2.6 LED Indicator Definitions..................................................................................................................................9
3 GET READY TO USE 2.4G DATALINK .............................................................................................................10
3.1 How to Place Antennas Right...........................................................................................................................10
3.1.1 Good Antenna Angle of Transmitter.........................................................................................................11
3.1.2 Good Antenna Angle of Sky Station .........................................................................................................12
3.2 How to Link/Bind 2.4G Datalink Ground Unit to Air Unit..............................................................................13
4 Firmware and Baud Rate.........................................................................................................................................15
4.1 Firmware Upgrading.........................................................................................................................................15
4.2 Baud Rate Switching........................................................................................................................................16
5 TELEMETRY OUTPUT (TO GCS).......................................................................................................................17
5.1 Connect to Smartphones/Tablets......................................................................................................................17
5.2 Connect to PC...................................................................................................................................................17
6 AFTER-SALE SERVICE........................................................................................................................................19
6.1 To-be-repair Procedure.....................................................................................................................................19
6.2 After-sale Policy...............................................................................................................................................19
6.2.1 7-Day Return & Refund.............................................................................................................................19
6.2.2 15-Day Replacement .................................................................................................................................21
6.2.3 1-Year Warranty Repair ............................................................................................................................22

2.4G Datalink User Manual v1.1
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1 READ TIPS
1.1 Icon Definition
Please pay more attention to content indicated with the following marks:
DANGER Dangerous manipulation probably leads to human injuries.
WARNING Warnings on manipulation possibly leads to human injuries.
CAUTION Cautions on what manipulation may lead to property loss.
Prohibited Mandatory Mark
1.2 Flight Safety
2.4G Datalink is designed for professional application in specific industries, users
who approaches to the device should have at least the basic ability to manipulate
it. Any irregular or irresponsible manipulations of the device may cause damages or
lead to property loss or human injuries. Non-adult users must follow their trainer’s
guidance or the supervision of an adult. Disassembling or modification on the 2.4G
Datalink system is prohibited without permission from its manufacturer, SIYI
Technology.

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To maintain a safe and orderly public space and to ensure you a good using
experience of SIYI’s products, please read the prohibited and mandatory terms
carefully.
Do not use 2.4G Datalink system to control your aircraft/vehicle at places with intensive
crowd (a square, a park), or at places with many obstructions (a street, a parking lot), or in
fields with strong magnetic or interference (an electricity plant, a radar station, railways), or
in any other fields where an irregular flight/operation may cause property loss or human
injuries.
Do not hold or cover the ground station antenna or obstruct its transmission by any
means in a flight or an operation.
Never point your ground station antenna’s upper ends straightly to your aircraft/vehicle
while it is working, they are the weakest part for transmission.
Do not start your aircraft/vehicle when you are tired, drunk, in sickness or any
circumstances you are not feeling good.
Do not take off your aircraft when it is rainy, windy or at night.
Do not power off your transmitter while your aircraft’s/vehicle’s engines and motors
are still working.
Please always try to control your aircraft/vehicle within sight range.
Make sure that your monitor display the FC control center and you can read their status
before starting your aircraft/vehicle.

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Do not forget to check battery level of the transmitter and the receiver before starting
your aircraft/vehicle.
Always power off your aircraft/vehicle first, ground station the second.
Before changing any settings for the ground station, make sure your aircraft’s/vehicle’s
engines are powered off and their motor wires are off connection, in case of a sudden switch
on.
When you start your aircraft/vehicle for the first time, make sure that the fail-safe
settings in your transmitter is activated.
Always switch on the transmitter first and hold the throttle joystick at its bottom
position, then power on your aircraft/vehicle.
1.3 Precautions on Storage/Carrying/Recycling
CAUTION
Always place your 2.4G Datalink system at places where babies or kids do not reach.
DANGER
2.4G Datalink system should be placed as below:
Not too hot (above 60℃) or too cold (under -20℃);
Not under direct sunshine or too dusty or too wet;
Not on an unstable holder which lacks of solid supports or may cause vibration;
Not nearby steam or other heat sources.

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2 PRODUCT INTRODUCTION
2.1 Product Features
Long Transmission Distance
The low-power RF solution which includes the advanced frequency hopping
algorithm and the remarkable anti-interference technology makes the
communication distance up to 15 kilometers.
Various Ports
The 2.4G Datalink supports UART/CAN (optional) data input and is equipped with
a USB port by which users can upgrade the device through PC easily.

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2.2 Parts
2.2.1 At a Glance
2.2.2 Ports on 2.4G Datalink System
Ground Unit
Micro-USB: Firmware upgrading.
Binding Button: Press and hold for two seconds to bind the ground unit with the air
unit.
Status Indicator: RF connection status.
USB-A: Telemetry data output to smartphone/tablet/PC.
DATA1/DATA2: Reserved

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Air Unit
Binding Button: Press and hold for 2 seconds to bind the air unit with the ground
unit.
Status Indicator: RF connection status.
Micro-USB: Firmware upgrading.
DATA1/DATA2(+ - Tx Rx): Flight controller data input.
2.3 Technical Specification
Overall
Compatible FC
Open Source Flight Controllers: PIX/APM, etc.
BOYING PALADIN V2
TOPXGUN T1-A
WOOZOOM THEONE-A
EFY FINIX200M
JIYI K3A/K++
CFUAS C1-A
Frequency Band
2400 MHz – 2483 MHz
Transmitting Power
100 mW (20 dBm) E.I.R.P
Transmitting Speed
325kbps*default
Receiving Sensibility
-101 dBm
Transmitting Distance
15 km / 9.3 miles (unobstructed, free of interference)
UART Baud Rate
115200*default
Working Current
Ground Unit: 200 mA
Air Unit: 80 mA
Idle: 60 mA
Power Input Port
Micro-USB
Wireless Type &
Function
2.4G ISM

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Packing Size
8.5x7.5x5 cm
Packing Weight
150 g
Ground Unit
Power Input Port
Micro-USB; 5V/2A
Data Output Port
USB-A
Antenna Gain
5 dBi
Antenna Connector
SMA 180° Female Base
Working Voltage
5V
Operating Temperature
-10 to 55℃
Dimensions
50 x 35 x 16 mm
Net Weight
35 g
Air Unit
Datalink Ports (to FC)
UART, CAN (optional)
Antenna Gain
5 dBi
Antenna Connector
SMA 180° Female Base
Working Voltage
5V
Telemetry Voltage
15 – 50V
Operating Temperature
-10 to 55℃
Dimensions
49 x 31 x 13.5 mm
Net Weight
28g