We have designed a carrier board for Jetson Xavier NX. We performed Pre-Compliance Testing for Radiated Emission with only an HDMI monitor connected; nothing else being run on the system. We found that the board emits radiation over the frequencies ~594MHz, 741MHz, 891MHz & crosses the limits of 57 dBuV/m. So we tested the Xavier NX DevKit in the set up & similar frequencies were observed as in the image attached.
Please help us with the following:
- DevKit is certified to 55032 & 55035. Kindly share the test report for the same.
- We had added choke instead of 3.32E series resistor for HDMI interface. When we observed the failure, we replaced the series resistor with choke TDK# MCZ1210AH900L2TA0G since TDK# ACM2012D-900-2P was not recommended for new designs.
Please help us in solving this issue to suppress the radiations from the HDMI interface.