3 Instrument Configuration78 Keysight U8903A User’s GuideAC level detectionThere are three AC level detection types consisting of RMS, Peak-to-Peak, andQuasi Peak as shown in the following figure. The RMS detector performs aconventional true root-mean-square (RMS) measurement on the input signal. ThisRMS value includes the DC component, unless the AC coupling mode is selected.The Peak-to-Peak detector returns the peak-to-peak voltage, while the QuasiPeak detector provides a response conforming to the CCIR-468 specification fornoise measurements. This detector is usually used together with the CCIR-1kweighted filter.Figure 3-4 AC level detector selection
