Generates a trigger signal and initiates a sweep under the
following conditions.
6. Trigger source is set to the BUS (set by the command
TRIG:SOUR BUS), otherwise an error occurs and the
command is ignored.
7. Analyzer must be in the trigger waiting state, otherwise (the
analyzer is in the measurement state or hold state) an error
occurs and the command is ignored.
The command is completed immediately after the generation of
the trigger signal.
(no query)