EMI Testing Using Spectrum Analyzers vs. Test Receivers

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Spectrum Analyzers for EMI Level [dBµV] 120 100 80 60 40 20 -20 0 30M 50M 70M 100M 200M 300M 500M 700M 1G �� SA setup for EMI Example - Set Span, RBW and detector - Span of 970 MHz / 500 points = 2 MHz resolution ! - x samples within RBW are stored - samples are weighted by some detector - Common EMI detectors are QP, Ave, Pk, RMS
Spectrum Analyzers for EMI �� Question - What was wrong with the previous setup? �� Answer - Frequency and amplitude accuracy depend on many samples falling within each RBW filter width. - set this parameter with frequency span
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: Spectrum Analyzers for EMI �� R
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 and 32: 1 PK * CLRWR Overdrive and Preselec
Page 33 and 34: Detector Settings �� QuasiPeak
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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