1. MMCX Antenna Ports
2. 3‐in‐1 Port
3. USB‐C Port
4. microSD Card Slot
5. Link Button
6. Linking Status Indicator
Connection
Refer to the illustration below to mount and connect the air unit toa racing drone.
3‐in‐1 Cable (Power, DJI HDL, UART)
RED: Power (7.4‐17.6 V))
BLACK: Power GND
BROWN: Signal GND
An electric soldering iron and soldering tin are required for connection. Make sure
that there are no short circuits or open circuits when soldering the cables.
There are up to eight channels for the air unit depending on the region (FCC: eight,
CE/SRRC: four, MIC: three). Each channel has a bandwidth of 20 MHz. The default
channel is 0. The channel can be changed manually to avoid interference from
other devices.
The air unit may become hot during or after operation. DO NOT touch the air unit
before it cools down.
WHITE: UART RX (Connects to Flight ControllerOSD TX, 0‐3.3 V)
GRAY: UART TX (Connects to Flight ControllerOSD RX, 0‐3.3 V)
YELLOW: S.Bus (Connects to Flight Controller S.Bus, 0‐3.3 V)