This vi will increment all data points at the index selection positions with the add step value. To select timing wire 0 to the “timing/waveform” control, another value represents the subsequent rows of waveforms in the data array. When the option “symmetric adding?” is true, the vi will add the step when the data is positive and subtract it when it is negative. This allows for setting the “amplitude” of the selected pulses as in a frequency generator, no additional offset will be created.