Common-mode noise voltage pulses from AC-DC chargers can affect the signal reception of capacitive panels during charging, which may lead to inaccurate touch readings or false touch signals. This has prompted cell phone manufacturers and the International Electrotechnical Commission (IEC) to jointly develop the IEC 62684 Standard to harmonize charger interfaces. Charger manufacturers are looking for fast and stable solutions for production testing and common-mode noise measurement to ensure that the electrical and electromagnetic interference characteristics of each product meet these standards.