EMI Testing Using Spectrum Analyzers vs. Test Receivers

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PRF and Detectors �� EUT / Detector dwell time requirements - Must capture “worst case” emissions of EUT - Cycle time and pulse repetition frequency may require extended dwell in each subrange - Some detectors require extended dwell settings (ave, QP)
Detector Settings �� QuasiPeak ???? ⇒ QP is an attempt to quantify a signals Impact on a radio receiver (annoyance) - Factors: amplitude, frequency, width, PRF �� Quasipeak restrictions - Dwell time (per step or subrange) > 600 mS - PRF issues increase dwell time requirements
Page 1 and 2: EMI Testing Using Spectrum Analyzer
Page 3 and 4: Q&A �� Who uses what ? ⇒ Spec
Page 5 and 6: Spectrum Analyzers for EMI
Page 7 and 8: Spectrum Analyzers for EMI �� R
Page 9 and 10: Spectrum Analyzers for EMI �� Q
Page 11 and 12: Level [dBµV] 120 100 80 60 40 20 -
Page 13 and 14: Spectrum Analyzers for EMI �� I
Page 15 and 16: Spectrum Analyzers for EMI � Has
Page 17 and 18: Test Receivers for EMI �� What
Page 19 and 20: 120 100 80 60 40 20 0 50.00 40.00 3
Page 21 and 22: Test Receivers for EMI �� Concl
Page 23 and 24: Which one to use? �� TR is opti
Page 25 and 26: Accurate Measurement �� Backgro
Page 27 and 28: 120 100 80 60 40 20 0 Sample Points
Page 29 and 30: OVLD 1 AP CLRWR IF Overload Example
Page 31: 1 PK * CLRWR Overdrive and Preselec
Page 35 and 36: 1 RM AV QP * CLRWR Detector Setting
Page 37 and 38: Conclusion �� TR vs. SA Span Su

EMI Testing Using Spectrum Analyzers vs. Test Receivers

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