Pierre
Did you check the command set to find any commands similar to this one?
If this waveform generator has any means of storing a command or sequence of commands ready for execution, you can use a function like ibtrg (Page 5-82 of NI 488.2 Software Reference Manual) to trigger it when you want it. The phase should be 0 because the instrument would not do anything until the trigger so it starts generating from initial conditions you specify.
I am not familiar with the instrument itself, so you will need to look up the commands but this would be the general format for programming.
I hope this helps.
Regards,
Ram
