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The Ground System for Lightbridge from DJI is the ground-end component for the Lightbridge video downlink and OSD telemetry system. In addition to what's in the box, the complete system requires the Air Unit or an aircraft that has Lightbridge integrated, and a compatible mobile device.
The Lightbridge system of which this is a part is designed to provide a complete FPV wireless relay solution, combining the video downlink for fist-person view, OSD (on screen display) data, and control signal in one wireless link. Via the mobile app you can view a real-time HD video feed, keep apprised of vital flight statistics such as remaining battery, and even operate a gimbal if attached.
The Ground System features the form factor of a wireless router. It can be battery powered from an internal 4000 mAh battery that lasts up to 4.5 hours or an external 3S to 6S Li-Po battery, available separately. To operate the aircraft, the system allows you to use your regular 2.4 GHz radio controller and will also pass along a gimbal control signal if present. To view the video feed and OSD overlay you will need an Android mobile device running the Lightbridge app, a free download from DJI. There is a powered USB port to plug in your mobile device and keep its battery from running down.
Requires Air System
This is the ground unit only. A transceiver for the aircraft is also required, or an aircraft with integrated Lightbridge technology
The video link features a latency of approximately 150ms. This makes the system suitable for FPV flying and aerial videography, where real-time feedback is essential
Built-in 2.4G Remote Control Link
Not only does Lightbridge relay video and OSD data back to the ground end, it also provides a way of extending the link between the transmitter (hand-held radio controller) and the aircraft. Plus, the Lightbridge system relays the gimbal control signal
4.5 Hour Battery Life
The ground-end features a transceiver that is similar to a Wi-Fi router. It can be wall-powered, but since you will most likely be using it in the field there is also a built-in 4000 mAh battery lasting up to 4.5 hours. The battery can be charged with the supplied AC adapter or a 3S to 6S Li-Po battery
USB 2.0 Port for Mobile Device
The USB port allows your Android smartphone or tablet to communicate with the Ground System, and will display video from the camera on the mobile device's screen. Plus the port is powered so you don't have to worry about running down your device's battery. For Android users it is recommended you have Android 4.1.2 or above
The OSD (on screen display) is natively part of the Lightbridge system meaning a separate iOSD module is not required. The OSD supplies telemetry data supplied by the flight computer, including, attitude/relative position, height, distance, horizontal and vertical speed, flight mode, power levels, signal strength, and GPS strength
Up to 8 downlinks can be connected for parallel streaming. Each can work independently without interference as long as proper spacing is maintained between them
A single air system can transmit to multiple ground systems, sending video to multiple screens at once. One ground system will send the control signal while additional ground systems receive the video signal only
Guards against third-party interception of the wireless link or loss of control over the aircraft to a third party. Plus encryption can be setup through the Lightbridge app