SZ DJI TECHNOLOGY 201309002 User Manual
Flight control systems that support the 2.4G Bluetooth Datalink
ACE ONE（Firmware V4.02 or above）, WKM（Firmware V5.24 or above）,
NAZA-M, NAZA-M V2（Firmware V4.00 or above，coming soon）
2.4G Bluetooth Datalink
LK24-BT
Thank you for purchasing DJI products. Please strictly follow this user guide to mount and connect the 2.4G
Bluetooth Datalink, install the Assistant Software on your computer, as well as the App on your mobile device.
Note：The map of Mainland China download from Mainland China IP addresses has differences with the actual
geographic environments. If users download the map of Mainland China from foreign IP addresses, which will be
more accurate.
2.4G Bluetooth Datalink
The 2.4G Bluetooth Datalink consists of the Air end and the Ground end, which provides reliable and stable remote
wireless transmissions for Ground Station based applications. When connecting a DJI BTU module to the Ground
end via a CAN-Bus, the Ground end can communicate with other devices via Bluetooth wirelessly. The signal flow is
as shown below.
Flight control
Flight control
system
system
CAN-Bus
CAN-Bus
1.1 In the box
The Air
The Air
end
end
Signals from
Ground Station
Signals from Flight
control system
The
The
Ground end
Ground end
USB
USB
CAN-Bus
CAN-Bus
PC Ground
PC Ground
Station
Station
BTU Module
BTU Module
Bluetooth
Bluetooth
iPAD Ground
iPAD Ground
Station
Station
The Ground end of
The Ground end of
2.4G Bluetooth
2.4G Bluetooth
Datalink
Datalink
The Air end of
2.4G Bluetooth
Datalink
BTU
Module
CAN-Bus
cable
USB
cable
DC power
cable
Ground Station
Installer CD for
Important：the firmware of BTU should be upgraded to version 1.0.1.2 or above to use with the 2.4G Bluetooth
Datalink.
1.2 User supplied
To use the 2.4G Bluetooth Datalink and Ground Station, please prepare the Flight control system, the aircraft,
batteries, PC or iPAD etc.
1.3 Connections and use
(1) Please assemble the antenna of the Ground end first.
©2013 DJI Innovations. All Rights Reserved. - 1 -
PC
(2) For connections and use please refer to the diagram below.
Antenna
The tail of the Antenna
should be pointed
downward and
unobstructed to ensure the
communication distance.
· PC Ground Station
· 2.4G Bluetooth Datalink
Assistant Software
· As si st ant Soft wa re o f
Flight control system
USB port
Connect to a PC via a
USB cable to use the
PC Ground Station or
configure the 2.4G
Bluetooth Datalink in
the Assistant Software.
CAN-Bus port
Connect the BTU
module when using the
iPAD Ground Station
DC power port
Connect DC power, you
can choose one of the
USB power supply or DC
power supply to provide
power for the Ground
end.
The Ground end
Distance between the
two ends should be
more than 1.5m
Co mm un ic ati on &
power supply port
Ex tra pow er
supply port
· 3S-6S Battery
· 9.9V~25.2V
DC power
-
+
· iPAD Ground
Station
· Assistant of Flight
control system
+
-
90
o
To Flight control system
To any CAN-Bus port on ACE
ONE, WKM , NAZA-M，
NAZA-M V2
The Air end
Antenna
The tail of the Antenna
should be pointed
upwards and
unobstructed to ensure
the communication
distance.
Notes：
(1) You can configure the Flight control system using the Assistant software on a PC or iOS mobile Device
wirelessly over the link of the 2.4G Bluetooth Datalink, however you cannot upgrade the firmware of
the Flight control system using this communication route.
(2) When connecting a BTU module or a LED Bluetooth unit to the Flight control system to configure in
the Assistant on mobile devices, as well as connecting a BTU module to the Ground end to use the
iPAD Ground station, the two Bluetooth communication links will not interfere with each other.
(3) If the Air end is changed to connect to a new Main controller, you should power cycle the Ground end.
(4) Make sure the LED indicator of BTU module is green after power on, for specific usage details please
refer to the BTU Manual.
(5) For usage of the PC Ground Station please refer to the latest Ground Station User Manual.
Important :
(1) If there are obstacles between the ground and air ends then the radio signal of the 2.4G Bluetooth
Datalink will be weak; please make sure the antennas are always visibly unobstructed during the flight.
Human body, trees, buildings or hills will disconnect the link between the Air end and the Ground end.
(2) Make sure the antenna of the Air end is pointing down, and the antenna of the Ground end is pointing
upwards; it’s better to put the Ground end at a high place to get further transmission distance.
(3) When using the ACE ONE Flight control system with the 2.4G Bluetooth Datalink, the Ground Station
will connect to the Main controller 15s after power on.
©2013 DJI Innovations. All Rights Reserved. - 2 -
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