I'd like to generate a pulse without modulation (juse one pulse) using E8267D PSG, what should I do? And how can I set the rising time, pulse duration ....?
You can't do this with the VSG. (Unless you meant RF pulse.) You would want a pulse generator. There might be a way to use one of the E8267C BNC outputs as a crude pulse generator, but that's not the way it's meant to be used.
If you really meant RF pulse, please respond.