Quasi-Peak DetectionMany international EMI regulations based on CISPR standardsp ermit use of a quasi-p eak detector. The quasi-p eak detectorhas three sets of charge and discharge time constants, dep endingon the frequency range selected. Because of these fast chargeand slow discharge time constants, the output of the quasi-p eakdetector dep ends on the rep etition rate of the broadband signal. SeeFigure 4-7.Figure 4-7. Quasi-Peak Detection4-8 Making Typical Measurements HP 8572A EMI Receiver User's GuideAll manuals and user guides at all-guides.com