It turned out that USB3.0 interferes with 2.4Hz wifi,GPS
The document below lists the following options
There are several areas where improvements can be made to minimize the impact of
USB 3.0 noise on wireless device performance. Three areas where improvements can
be made are:
• Shielding on the USB 3.0 peripheral device
• Shielding improvements on the USB 3.0 receptacle connector on the notebook
• Wireless antenna placement, wireless receiver performance
Each of these areas are studied in further detail in the following sections.
Hi, what’s your requests on this? Is it on devkit or custom design? What’s the wifi/GPS module that you are using? The methods you listed are helpful, you can follow that to optimize.
Thank you for your response.
- Q " Is it on devkit or custom design?"
- A Using the default NX/AGX devkit
- Q. What’s the wifi/GPS module that you are using
A. Wifi intel 8265 on AGX, default stock realtek on NX devkit; ublox GPS ZED-F9P
Is it Xavier NX or AGX Xavier devkit? Can you share a photo of it? How do you get the result of interference relationship?
- Q. Is it Xavier NX or AGX Xavier devkit?
- A. It is both
- Q. Can you share a photo of it?
- A. No pic right now
- Q. How do you get the result of interference relationship?
- A. [from devs]
we have a usb hub which can be switched on and off
when we trn off the usb3 camera
the gps works
when we turn it on
the gps doesn't work
Could you try wrapping the USB HUB with grounded aluminum or copper foil? The USB cables themselves will be shielded (unless it is rather cheap), and this is the component which likely is not shielded and is simultaneously the easiest to experiment with.
Copper foil and RF absorbing foam
Other than cabling, is it possible to test with the Jetson itself (and USB HUB) wrapped in a cage?
Can you share a photo of all sets so as to understand it better? Is it conductive interference or RF interference?
we had similar problems.
GPS board and antenna are connected via yusb
one camera connected via yusb
As soon as we connect the second camera via USB, high-frequency interference occurs that jam the GPS.
Isolation of all interfering components into a closed aluminum circuit helped and raise the antennas from the product body by 15 cm.
None of the materials on frequency jamming helped us.
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