CISPR 25 Class 5 Radiated Emissions Test Plan Template (Excel)

CISPR 25 defines electromagnetic compatibility (EMC) limits and measurement methods for radio disturbance characteristics of components and modules used in vehicles, boats, and internal combustion engine-driven devices. Class 5 represents the strictest radiated emissions limits—typically applied to components located in the passenger cabin or near sensitive RF receivers (e.g., infotainment head units, ADAS sensors, telematics control units)—with limits ranging from 20 dBµV/m (30 MHz) to 40 dBµV/m (1 GHz) measured in a normalized 10 m semi-anechoic chamber (SAC). The Excel-based test plan serves as a living procedural document that integrates test setup geometry (antenna height scan, polarization, turntable rotation), instrumentation settings (RBW, VBW, detector functions), environmental conditions (ambient temperature, humidity, background noise margin ≥6 dB), and uncertainty budgeting per ANSI C63.4 and CISPR 16-4-2. It also embeds automated pass/fail logic using conditional formatting and data validation to flag non-conformities against Class 5 limit lines, thereby reducing human error and accelerating compliance sign-off. Industry adoption is driven by OEM requirements (e.g., Ford EMC-CS-2009, GM W31, BMW GS 95024-1), which mandate formalized test plans as part of PPAP (Production Part Approval Process) submissions.