Parameter R stands for RESET. If this parameter is set (R = 1), all running functions will be immediately terminated and output Y goes to the value of parameter YOFF (offset). Simultaneously the cycle counter N is also reset to 0 and ACTIVE returns to "0".
Starting the function generator.
The parameter START (START = 1) starts the function defined with the data structure. Output N is incremented with the beginning of each new cycle. If the parameter START returns to "0", the active cycle of the selected function runs to completion. As long as the function is running, output ACTIVE is "1". If the period is ended, output ACTIVE is also reset to "0".
Waveforms produced by the function generator have an amplitude with the value of parameter amplitude, i.e. values range from -amplitude to amplitude for bipolar operation (unipolar = "0") resp. from 0 to amplitude in unipolar operation (unipolar = "1"). Waveform values can be shifted away from the zero reference point through the parameter YOFF.
NOTE: Should the output of another function generator be applied to parameter YOFF, the waveforms produced by both function generators are overlaid.
Rise time t_rise is used only by the functions "ramp" and "trapezoid". In the "saw-tooth" function rise time is determined by halfperiod - t_off. Rise time is 0.5 * (halfperiod - t_off) for the "delta" function.
