Introduction
If you are an FPV pilot, you have probably asked yourself: “Can I use DJI Goggles V2 with O3 VTX?” This question comes up a lot because pilots want a reliable digital video feed without glitches. Some guides online leave out critical details, which leads to confusion. This article explains everything in plain language. You’ll learn how the Goggles V2 and O3 Air Unit work together, how to set them up properly, and how to solve the common problems that often frustrate FPV pilots.
Understanding Compatibility
DJI Goggles V2 are designed to work with DJI’s digital video ecosystem. This includes the O3 Air Unit, often called O3 VTX. When connected properly, the Air Unit sends clean digital video to the goggles with very low latency. This makes flying easier and safer.
However, not every video transmitter works with the Goggles V2. Analog VTX units and most third-party digital systems will not connect. Firmware also matters. Both the goggles and the O3 Air Unit must be on the right version to communicate. Without this, binding fails and no video is transmitted.
| Video Unit | Works With DJI Goggles V2? | Notes |
| O3 Air Unit / O3 VTX | ✔️ Yes | Works when firmware is updated and binding is done correctly |
| DJI FPV Air Unit (older) | ✔️ Yes | Compatible in standard DJI FPV mode |
| Caddx Vista | ✔️ Yes | Only works if firmware is compatible |
| Analog VTX | ❌ No | Cannot connect directly |
| Non-DJI Digital VTX | ❌ No | Not officially supported |
Why Am I Seeing No Video?
A “no signal” message is one of the most common complaints. Usually, the issue comes down to firmware or binding. Both devices need firmware versions that support each other. If one is outdated, the Goggles V2 won’t recognise the O3 Air Unit.
Binding is also critical. Many pilots assume the connection happens automatically. It doesn’t. You must put both the goggles and the O3 Air Unit in bind mode simultaneously. If you skip this, the video will never show. Selecting the correct video source in the Goggles menu is another step that is sometimes overlooked.
Binding Problems and Solutions
Binding can fail for several reasons. One common cause is timing: if one device enters bind mode too early or too late, the devices will not pair. Another factor is battery level. Low voltage in either the goggles or Air Unit can interrupt the process. Loose antennas or poor cable connections can also prevent successful binding.
The fix is straightforward: ensure both devices are fully powered, enter bind mode at the same time, and confirm the video source in the menu. Updating firmware before binding almost always resolves stubborn connection problems.
Can I Use Analog VTX?
DJI Goggles V2 are digital-only. They cannot display analog video directly. Some pilots try converters or modules to get analog signals into the goggles, but this usually adds lag and reduces video clarity. For a smooth and reliable FPV experience, it is best to stick with the O3 Air Unit, DJI FPV Air Unit, or Vista units with compatible firmware.
Do I Need DJI Assistant 2?
Yes. DJI Assistant 2 is essential for updating firmware on both the Goggles V2 and the O3 Air Unit. While the DJI Fly app is handy for some updates, it cannot handle all FPV components. Using DJI Assistant 2 ensures that both devices have compatible firmware, fixes bugs, and prevents many binding or video issues. Keeping firmware up to date is one of the simplest ways to avoid problems mid-flight.
Why Does Video Cut Out?
Even after binding, some pilots experience video dropouts. This is usually caused by a low battery, signal interference, or antenna issues. Batteries on both the drone and the goggles should be fully charged. Interference from Wi-Fi or other electronics can weaken the connection. Antennas should be firmly attached and positioned away from metal parts. Firmware updates also help stabilise video and reduce latency.
Common Mistakes to Avoid
Many pilots make simple mistakes that cause frustration. These include skipping firmware updates, assuming binding is automatic, trying to use analog VTX, and attempting to connect non-DJI digital systems. Avoiding these mistakes ensures a smooth and reliable video connection between DJI Goggles V2 and the O3 Air Unit.
Conclusion
DJI Goggles V2 work really well with the O3 VTX (O3 Air Unit) as long as the firmware is up to date and the devices are properly bound. Regular analog VTX or non-DJI digital systems won’t work unless you use extra hardware, and even then, the connection might be unstable. Keeping your firmware updated, binding the devices correctly, making sure batteries are full, and positioning antennas properly will give you a clear, steady video feed so your FPV flights are smooth and fun.
Frequently Answers and Questions
Q. Can DJI Goggles V2 work with O3 VTX?
Yes, they work together if the firmware is updated and the devices are properly bound.
Q. Do I need firmware updates to connect them?
Yes, updating firmware on both the goggles and O3 Air Unit is essential for a stable connection.
Q. Can I use analog VTX with DJI Goggles V2?
No, DJI Goggles V2 only supports digital video. Analog systems won’t work without a converter.
Q. Why isn’t my video showing in the goggles?
This usually happens due to binding issues, outdated firmware, or selecting the wrong video source.
Q. Do I need DJI Assistant 2 to set them up?
Yes, DJI Assistant 2 helps update firmware and ensures proper binding for reliable video.