1. Mount the Air Unit securely on the drone, choosing the position by the length of the cables.
2. Connect S.Bus 1 to the RCIN port of the flight controller. S.Bus 2 carries the gimbal signal.
3. Connect UART to TELEM 1 or TELEM 2 on the flight controller.
4. Power the unit with 7-12V, ideally about 7V, and don't share its BEC with the servos.
5. Connect the camera to HDMI 1. A second camera goes to HDMI 2, and you switch between the two streams on the controller.
6. Mount the antennas vertically at an angle of about 15 degrees, away from metal and other conductive parts, including carbon fibre.
7. Connect the fan to a 5-12V supply.

Connectors

1. HDMI 2 – second camera input
2. HDMI 1 – main camera input (recommended)
3. Power – 7-12V
4. Micro USB – debugging and firmware updates, OTG mode
5. Pair/Reset – pairing with the controller and update mode
6. LED 1, 2 – status LEDs
7. UART – 3.3V telemetry to the flight controller
8. S.Bus – control signal and gimbal signal
9. ANT – 2x MMCX antenna connector
10. ETH – Ethernet port
11. Micro SD card slot – for future use

LED 1

• Solid green – HDMI 1 signal
• Solid red – HDMI 2 signal
• Solid yellow – data from the flight controller
• Green and red alternating – two video streams
• Green, yellow and red alternating – two video streams and flight controller data
• Off – no valid video or flight controller signal

LED 2

• Flashing green – pairing
• Solid green – valid control signal and normal power
• Solid yellow – not paired or no valid signal
• Flashing red – unstable power
• Off – no power