Set the period for pulses. The PULS:PER[1|2]? query returns the period
of the pulse waveform in seconds. The specified period must be greater than
the sum of the pulse width and the edge time.
This command affects the period (and frequency) for all waveform functions
(not just pulse). For example, if you select a period using the
PULS:PER[1|2] command and then change the function to sine wave,
the specified period will be used for the new function. MIN selects the
lowest actual possible period allowed for the selected function. MAX selects
the highest actual possible period allowed.