We have been using Toradex Apalis module having i.mx8qm processor from NXP.
Our product is an Infotainment system targeted to be placed in truck for North America region.
We have connected LVDS displays over the LVDS signals coming directly from i.MX8qm processor.
We are running FCC pre-certification tests on our product and it is failing in Radiated Spurious emission test.
The spurious emission is being generated at the LVDS signals itself from the Toradex SOM connector.
Below are the frequencies where we are observing spikes along with the signal-strength of the respective frequencies in FCC Radiated Spurious Emission test.
| MHz | dBm |
|---|---|
| 68.2 | -49 |
| 826 | -49 |
| 579 | -50 |
| 195 | -54 |
| 341 | -55 |
| 375 | -52 |
| 579 | -51 |
| 648 | -51 |
| 826 | -49 |
|  |
Image is attached for the same.
Please advise how we can remove the interference and pass FCC.