Testing risetime and bandwidth with a Siglent SDS2102X Plus

[mwb1100]

Not to mention that whenever you get a new toy you just want to see what it can do.

That presumes you know how to use it and find its limits, not everyone does.
There's a good reason why I shelled out on a RF gen and Leo Bodnar 30ps pulser.

You asked "why?"

The famous answer to that is "because it's there".  When beginning to use something new, you often don't know how.  Trying things that you don't know how to do is often a good way to learn.  Seems like that's what happening in this thread.