Analog Discovery Wavegen Ramp

Hi, I am using the Analog Discovery 2 to measure the frequency response of an LRA motor. The LRA motors have a resonant frequency and I wrote a C# application using the Waveforms SDK that uses the Wavegen to drive the motors over a range of frequencies around the resonant frequency to produce a graph of the amplitude response across the frequency range. A typical graph that I generate is attached. Everytime I want to get a data point for a new frequency I call FDwfAnalogOutNodeFr

Hi @MaximJoey You could use the FM custom signal to sweep in steps. dwf.FDwfAnalogOutNodeEnableSet(hdwf, channel, AnalogOutNodeFM, c_bool(True)) dwf.FDwfAnalogOutNodeFunctionSet(hdwf, channel, AnalogOutNodeFM, funcCustom) # FM waveform period 110 seconds, 10s for each of the 11 steps dwf.FDwfAnalogOutNodeFrequencySet(hdwf, channel, AnalogOutNodeFM, c_double(1.0/110)) # FM will change the carrier frequency between -50% to +150%, for custom values in range of -1 and +1 dwf.FDwfAnalogOutN