548 Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Reference
8More About Oscilloscope Commands

All Oscilloscope Commands Are Sequential

IEEE 488.2 makes the distinction between sequential and overlapped
commands:
Sequential commands finish their task before the execution of the next
command starts.
Overlapped commands run concurrently. Commands following an
overlapped command may be started before the overlapped command is
completed.
All of the oscilloscope commands are sequential.