Cartridge load/lead capacitance  --  The inductance of the cartridge combined with the capacitance of the screened lead forms a resonant circuit that can produce a peak in the upper part of the frequency response. It can be flattened by critical resistive damping, or pushed above the audio range with low values of inductance and capacitance. As sufficiently low values are hard to get in practice, damping is applied using a load resistor. Its value is effective for only one combination of inductance and capacitance, so as the inductance is fixed, and the load is standardised at 47 kh2 with few exceptions, the specified capacitance must be observed. While some low-noise and data-screened cables have capacitances around 100 pF/m, most usually used for pickup connection go up to 350 pF/m. As some cartridge makers specify 100 pF, care must be taken in selecting and measuring the screened cable.