With the U1730C series of handheld LCR measuring devices from Keysight (formerly Agilent's electronic measuring technology) measurements up to 100 kHz are possible. Measurements can now be carried out faster at the push of a button thanks to the automatic recognition of the components with the new function Ai (Auto identification). The ESR mode (Equivalent series resistance) is now available for detailed analysis of the components. The accuracy of the measurements could be improved by two times compared to the previous models.