I would like to generate Pulsed signal with Duty Cycle from 0.1 %- 30%; Pulse repition Itervall(PRI) from 10usec-100msec; On to Off rejection 70dB min; Rise/fall time 20 ns max.
I know that a normal Vector Signal cannot perform it rather through its Arbritrary Inputs, so we have to do it in MATLAB/LabView etc.
How can I make sure that I see it on a Spectrum Analyzer at zero span?
Do I have to switch to a scope with high sampling rate capabilities?
Zero span is easy. Just set your start and stop freqs to the same thing and voila you have zero span. If you have an O-scope, then you don't have to use zero span.
Good luck on the other issues