Whitepaper
Boost EMC Test Throughput with Accelerated Time Domain Scan
This application note details Keysight’s Time Domain Scan (TDS) and Accelerated TDS capabilities implemented in the N9048B PXE EMI receiver for faster EMC testing. Conventional frequency domain scans dwell at each frequency step, whereas TDS uses Fast Fourier Transforms (FFTs) with high overlap (>90%) across wider acquisition bandwidths (1-350 MHz) to simultaneously capture emissions data – significantly reducing scan time while maintaining CISPR 16-1-1 and MIL-STD-461 compliance. Accelerated TDS further improves throughput, achieving scans in seconds that previously took hours. A CISPR Band C/D quasi-peak test, traditionally taking nine hours with a stepped scan, can be completed in approximately six seconds using Accelerated TDS on the N9048B receiver.