[DaveWM]

to further illustrate the point of scope reading for voltage compared to meters, read the test point with you meter, should be 2.5v not 5v PP as on the scope. the square wave duty cycle will avg out on the meter between 0 and 5v pp. since its duty cycle is the same on and off, the meter will just avg and give you 2.5. Sine waves are different scope PP will be 1.41 IIRC more than the meter. This is why you get 165 vdc out of a 120vac supply, the PP of the 120vac is actually higher, and when rectified and filtered it shows up.

when reading odd shape waves it gets really wacky. So sams gives both the meter voltage AND the PP to make it easy to see whats going on. I dont know the input impedence of modern DMMs prob as high as a VTVM, but I still prefer the VTVM again due to how odd shaped waved may effect the DMM.

I do use the scope for reading DC voltages, like B+, you can use the DC setting to check voltage, and then look at the line for ripple. IF the DC is correct you can switch to AC and take a closer look at the ripple.