Restarts the current sweep and/or measurement. If :INITiate:CONTinuous is OFF (for example, the instrument is in hold mode), send the command :INITiate:IMMediate to trigger one sweep. If :INITiate:CONTinuous is ON (for example, the instrument is in run mode), send the command :INITiate:IMMediate to trigger a series of new sweeps to start immediately.