Ok, I'll go and get a cheap $100 scope and start playing around with it. Then, I'll be able to know exactly what I want and need.
The scope I'm talking about is an old 20MHz dual trace, with holdoff, AC/DC/HF/LF coupling, min 100ns/div, delay up to 10ms, 1X/10X multiplier, X-Y up to 2MHz, 15cm screen,...
I'll go and check that it is working to a tech service local, where they're selling it. Should I check something in special before assuming it works fine??
Thank you!