Here's a few captures of DSO waveforms direct from a Sony CDP-101 (S/N 546495) This little DS1054Z scope is fantastic for grabbing images, using LXI over USB and much easier than fighting with my digital camera taking blurry CRO scope shots.
Firstly, 100Hz square wave, (Denon Test Disc 38C39-7147- 1st generation) traces offset for visibility loaded with 10k ohms (important to load your outputs as scope input impedances are very high)
Zoomed:
The ringing is contained to the first 250uS and clearly demonstrates the non oversampling design of the Sony CDP-101.
This is a single sample, 0dB. Note the pulsive signal leaves a trail of ringing, although it reduces rapidly and is all over in a few hundred uS.
Zoomed for detail:
Standard EIA toneburst, note the small wiggle at the burst start- this doesn't appear on my analogue CRO? I'll look into that.
1KHz, sine, 0db, both channels. Levels are identical and inter channel group delay is minimal
3.149KHz, 0dB. This is essentially the frequency at which the human ear is most sensitive to pitch variations (why it is used for W&F testing). The group delay at his point is an inconsequential 4-5uS I would estimate.
Here's 10KHz:
Here's 18KHz and I would estimate the delay to be 12uS. Spot on.
Just or fun, here's 20KHz. We can't hear a 20KHz fundamental, but the interchannel delay is around 13.5uS on this shot. Does that correlate with the fS? Not quite.