Whitepaper
Save Time and Money with EMI Precompliance Testing
This Keysight application brief details the benefits of EMI precompliance testing as a cost-effective method for identifying and resolving electromagnetic interference issues early in the product development cycle. It contrasts precompliance measurements—using equipment like the N6141A EMI measurement application with LISNs, transient limiters, and antennas—with full compliance testing which requires CISPR 16-1-1 or MIL-STD 461 compliant receivers and controlled environments. The paper outlines procedures for both conducted (150 kHz to 30 MHz) and radiated emissions precompliance testing, including techniques to differentiate between DUT signals and ambient noise, and suggests using close-field probes like the N9311X-100 for source isolation. Successfully implementing these methods allows companies to reduce expensive rework later in the design process and speed time-to-market.