# DC/RMS Measurements

Two of the most common measurements of a signal are its direct current (DC) and root mean square (RMS) levels. You can use several measurement analysis techniques for making DC and RMS measurements of a signal.

The LabWindows/CVI Advanced Analysis Library includes the following DC/RMS measurements functions:

Function | Description
--- | ---
ACDCEstimator | Calculates an estimation of the AC and DC contents of the input signal.
RMS | Calculates the root-mean-square (rms) value of the input array.