Instrument Configuration 3Keysight U8903A User’s Guide 77AC/DC couplingThe DC coupled setting allows both AC and DC input signals to pass through tothe measurement circuitry. The AC coupled setting blocks the DC component ofthe input signal by switching a capacitor in series to the input path.The DC coupled setting allows signals to be measured down to 0 Hz. This settingshould be used when making DC voltage measurements. The AC coupled settingis selected when you need to measure only the AC component of a signal, forexample, when making RMS or peak-to-peak voltage measurements.The AC/DC coupling selection is shown as follows.Figure 3-3 AC/DC coupling selection
