If you collect the measurement data from an ibaPQU-S device to measure the electrical power quality, you can define spectrum submodules in the configuration of the device module. These modules calculate the harmonics and interharmonics of voltages and currents up to 50th order.

Using the PQU spectrum view, the harmonics and interharmonics can be clearly illustrated as a bar chart. The limit values for individual harmonics are displayed as horizontal marks on the bars.

You can also add the PQU spectrum using the View menu or the toolbar:

You can only assign one PQU spectrum module to one PQU spectrum view.