SIYI AK28 HD User manual

AK28 HD/HD+ User Manual V1.1
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2019 SIYI Technology Copyright
AK28 HD/HD+ ENTERPRISE SMART
CONTROLLER USER MANUAL
V1.1
May 2020

AK28 HD/HD+ User Manual V1.1
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2019 SIYI Technology Copyright
Thank you for purchasing SIYI Technology’s product.
After a series of technology breakthroughs intended for extremely long-range UAV control
transmission combined with high resolution video streaming, we are pleased to introduce the AK28
HD and HD+. The AK28 HD/HD+ is integrated with the latest 1080p HD video transmission while
taking advantage of the most advanced frequency hopping technology and anti-interference RF
algorithms.
The Sky Station is made of CNC crafted aviation aluminum which not only makes the unit marvelous
in its appearance, but also provides a remarkable level of cooling.
To support as many video streaming devices as possible, there are both an Ethernet port as well
as an HDMI input on the receiver.
The brand new AK28 HD/HD+ system will present you with a flexible live experience whether it’s
for FPV flight or aerial video streaming.
To maintain a safe and orderly public space and to ensure you a good using experience of AK28
HD/HD+ transmitter, please read this manual carefully. If you have any issue using the product,
please consult the manual or check online pages of AK28 HD/HD+ on SIYI Technology’s official
website (http://www.siyi.biz). You can also inquire our after-sale service coordinator
([email protected]).

AK28 HD/HD+ User Manual V1.1
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CONTENT
1 READ TIPS...............................................................................................................................................................1
1.1 Icon Definition....................................................................................................................................................1
1.2 Flight Safety .......................................................................................................................................................1
1.3 Precautions on Charging AK28 HD/HD+..........................................................................................................3
1.4 Precautions on Using SD Card...........................................................................................................................5
1.5 How to Use SIM Card on AK28 HD/HD+.........................................................................................................5
1.6 Precautions on Storage/Carrying/Recycling.......................................................................................................5
2 PRODUCT INTRODUCTION .................................................................................................................................7
2.1 Product Features.................................................................................................................................................7
2.2 Parts..................................................................................................................................................................10
2.2.1 At a Glance................................................................................................................................................10
2.2.2 Button/Switch Types and the Default Channel Definitions.......................................................................11
2.2.3 Ports on AK28 HD/HD+ ...........................................................................................................................12
2.3 Technical Specification ....................................................................................................................................13
2.4 Packing List......................................................................................................................................................15
2.5 AK28 HD/HD+ Common Diagram..................................................................................................................17
2.6 Transmitter LED Indicator Definitions ............................................................................................................18
3 GET READY TO USE AK28 HD/HD+.................................................................................................................19
3.1 How to Place Transmitter Antennas Right.......................................................................................................19
3.1.1 Good Antenna Angle of Transmitter.........................................................................................................21
3.1.2 Good Antenna Angle of Sky Station .........................................................................................................22
3.2 How to Charge AK28 HD/HD+ Transmitter....................................................................................................23
3.3 How to Link/Bind AK28 HD/HD+ Transmitter to the Sky Station.................................................................25
3.4 Throttle Joystick Type......................................................................................................................................27
4 OPERATING SYSTEM..........................................................................................................................................29
4.1 Tips...................................................................................................................................................................29
4.2 Download System Application.........................................................................................................................29
4.3 How to Import Files and Install System Application .......................................................................................29
5 SIYI TX...................................................................................................................................................................31
5.1 Channel Settings...............................................................................................................................................31
5.1.1 End Point...................................................................................................................................................31

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5.1.2 Middle Point ..............................................................................................................................................32
5.1.3 Channel Reverse........................................................................................................................................33
5.1.4 Channel Mapping ......................................................................................................................................34
5.2 Datalink Settings...............................................................................................................................................35
5.3 System Settings.................................................................................................................................................36
5.4 Fail-safe............................................................................................................................................................37
5.5 RC Relay ..........................................................................................................................................................38
6 SKY STATION (RECEIVER)................................................................................................................................40
6.1 At a Glance.......................................................................................................................................................40
6.2 Datalink Connection with FC...........................................................................................................................40
6.3 Datalink Connection with Ground Station .......................................................................................................41
6.4 Videolink Module.............................................................................................................................................42
6.4.1 Connect to an HDMI Camera....................................................................................................................42
6.4.2 Connect to an Ethernet Camera.................................................................................................................43
6.4.3 Configuration.............................................................................................................................................45
6.4.4 Why No Image in My Device?..................................................................................................................45
7 Firmware and Voice Upgrading..............................................................................................................................50
8 After-sale Service....................................................................................................................................................52
8.1 To-be-repair Procedure.....................................................................................................................................52
8.2 After-sale Policy...............................................................................................................................................52
8.2.1 7-Day Return & Refund.............................................................................................................................52
8.2.2 15-Day Replacement .................................................................................................................................54
8.2.3 1-Year Warranty Repair ............................................................................................................................55

AK28 HD/HD+ User Manual V1.1
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2020 SIYI Tech All Rights Reserved
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
AK28 HD/HD+ Enterprise Smart Controller 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 AK28 HD/HD+ system is prohibited without
permission from its manufacturer, SIYI Technology.

AK28 HD/HD+ User Manual V1.1
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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 AK28 HD/HD+ 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 transmitter antenna or obstruct its transmission by any means in
a flight or an operation.
Never point your transmitter 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 the 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 AK28 HD/HD+ transmitter’s screen display the FC control center
and you can monitor their status before starting your aircraft/vehicle.

AK28 HD/HD+ User Manual V1.1
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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, AK28 HD/HD+ transmitter the second.
Before changing any settings for the transmitter, 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 AK28 HD/HD+ 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 Charging AK28 HD/HD+
AK28 HD/HD+ transmitter is equipped with a replaceable and chargeable
12960mAh LiPo 1S battery and a 5V/2A Micro-USB charger adapter.
Do not use any USB chargers over 5V output to charge the transmitter.
For the best charging experience, please power off your transmitter before charging.
The charging current should not exceed 2A.
Stop charging immediately if you found the charger damaged, broken or overheat.
Stop charging immediately if there was a peculiar smell, smokes or leaks. In such cases
you shall sent the transmitter back to your dealer for after-sales service.

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Do not charge AK28 HD/HD+ transmitter when temperature is high or battery
temperature is over 60℃.
DANGER
Keep AK28 HD/HD+ away from any places that babies or kids may reach easily while it is
under charging, better there is supervision from an adult in case of emergency.
You can also stockpile spare batteries for AK28 HD/HD+ transmitter and charge up
to three AK28 HD/HD+ batteries through a professional battery charging hub
designed and manufactured by SIYI.
The spare batteries and the battery charging hub are sold separately.

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1.4 Precautions on Using SD Card
Do not disassemble, bend, press, abandon or damage SD card by any means.
Stop using the SD card if you find it soaked by water, oil or any other chemical liquid.
CAUTION
A SD card is also an electronic product, keep it away from static electricity.
Keep the Micro-SD card slot clean in case of blocking by sand or dirt.
Keep the SD card in slot while you are downloading or uploading data; taking out it
mistakenly, hitting it or shattering it may cause damage or data loss.
Keep the SD card away from places that a baby or a kid may reach in case that it was
swallowed mistakenly by the baby/kid.
1.5 How to Use SIM Card on AK28 HD/HD+
Coming soon
1.6 Precautions on Storage/Carrying/Recycling
CAUTION
Always place your AK28 HD/HD+ transmitter at places where babies or kids do not reach.

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2020 SIYI Tech All Rights Reserved
DANGER
AK28 HD/HD+ transmitter 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.