How to rectify EMC issues related to packet loss in PLC power line carrier communication?

EMC remediation for packet loss in PLC power line carrier communication requires locating the interference source and implementing targeted measures. Use a spectrum analyzer to pinpoint the noise frequency band, such as switching power supply noise and clock harmonics. For conducted interference, strengthen filtering: add a common-mode inductor CML4532A-510T and an X capacitor (0.47μF) at the power line inlet. For radiated interference, optimize wiring: shorten carrier signal lines and increase shielding. Check the grounding system: ensure grounding resistance is less than 0.1Ω and eliminate ground loops. On the software side, add forward error correction and retransmission mechanisms. After remediation, testing should show that under the same noise environment, the packet loss rate should decrease from 5% to below 0.1%, and the bit error rate should be below 10^-6. These remedial measures can improve communication reliability and meet practical application requirements.