1U low‑profile mainframe for up to four DC modules. Keysight N6702C Modular DC Power System Mainframe is designed for professional EMC testing workflows, delivering reliable performance for emissions and immunity evaluations. Typical applications include pre-compliance, debug, and certification support across automotive, aerospace, medical, and industrial sectors. Engineered for accuracy and repeatability, it integrates smoothly with lab automation and common EMC standards. Keywords: EMC testing, EMI/EMS compliance, RF immunity, radiated & conducted emissions, IEC/EN 61000, CISPR, EMC lab power supply, stable DC source.