And i think i could make something perhaps less trusty, but it could give an idea of what the signal looks like.(and learn a lot in the progress)

Its better something than nothing....

You do what you see fit, but I truly wholehardely and absolutely believe it is better to "be blind" than to see the wrong thing. If you see something that looks "normal", which is, actually, not "normal" you will spend time and aspirin hunting for something else that is not there.

There is nothing wrong with a limited capability scope if you know the limits. I have, on some occasions, where the offending glitch was too narrow for my scope to see had to reason my way to where the glich was and fix it. That is truly to "learn a lot in the progress".

The issue here is not "capability" but "trustworthyness"

Erik