I bought a HP 1740A 'scope on craigslist for 20 bucks a week ago. Don't know how capable this scope is, but it has a dual-channel dc to 100 MHz vertical deflection system. Anyhoo, I have never used one before and I have been learning mostly out of the manual. So, I am familiar with operating it. I have also ready a couple of posts here, but I was wondering if anyone would be patient enough to give step-wise instructions on how to properly take measurements for tube amps using a 'scope. What measurements can be taken? I would really appreciate it. Thanks!
P.S. As far as generating signals, do I just use a CD that has different frequencies? If so, where could I get one.