Set the pulse width in seconds. The pulse width represents the time from
the start of rising edge of the pulse to the start of the next falling edge. The
:FUNC[1|2]:PULS:WIDT? query returns the pulse width in seconds.
This command is affected by the :FUNC[1|2]:PULS:HOLD
command, which determines the value to be held constant as the period is
adjusted: the specified pulse width value, or the specified pulse duty cycle
value, or the specifies trailing delay. See the :FUNC[1|2]:PULS:HOLD
command for further information.