Tracked Changes. Hydraulic fluid power. Determination of pressure ripple levels generated in systems and components. Method for determining source flow ripple and source impedance of pumps|Power transmission systems, Interpolation, Pressure measurement (fluids), Fluid equipment components, Accuracy, Positive-displacement pumps, Wave propagation, Pressure equipment, Testing conditions, Flow rates, Circuits, Test equipment, Fluid outlets, Fluid inlets, Fluid equipment, Valves, Fluid engineering, Hydraulic transmission systems, Calibration, Hydraulic equipment, Linearity, Flow measurement, Installation, Frequencies, Pumps, Fluid pressure