HP 54620A User's And Service Manual page 148

Ensuring Accurate Measurements
Glitch Detection
Figure 50 shows the same waveform, this time captured at a much faster
sweep speed and corresponding sampling rate. Notice that both the main and
delayed sweeps show the waveform as a clearly defined series of pulses and
that the disjoint waveform display has disappeared.
Figure 50
Waveform Display with Sufficient Sampling Rate
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